The buyer question · week of Nov 2 – 8

Best Vitamin D Supplements Ranking

Picked by AI, checked by people.

The weekly chart ?

The top 20 products brands right now.

Product chart

Current race ?

This week ?

Thorne Vitamin D/K2 Liquid holds #1.

#1 in 5 of the last 19 weeks

4 debuts3 backbiggest climb 327 out

All 27 moves ↓

Tap a card for each AI’s place and the monthly check.

#ProductPlace by weekLast weekWeeks in top 20Top-20 weeks
  1. #1same place as last weekVitamin D/K2 LiquidThorneMonthly check: Passes the checkAlso #12 Daily WellnessLast week #1 · 13 weeks in top 20

    AI places · this week ?

    1. GPTnot named
    2. Claude#1
    3. Gemininot named
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 1/6

    The card’s #1 is the 4-week average.

    People · October 2026 check ?

    • Passes the check · buyers and video reviews rate it highly ?
    • Buyers’ rating4.810,259 ratings · Oct 2026
    • Score read from review videos4.3/5read from 2 videos · Oct 2026 ? 12
    • Owners’ threads: widespread, serious failures0serious failures · 9 threads read · Oct 2026
    Evidence
    Check evidence
    Frozen October 29, 2026
    Owners

    9 threads read · 0 serious failure themes

    Watch · YouTube ?

    🦴❤️ Thorne Vitamin D + K2 Liquid Review - Benefits and Side Effects - Why you need K with vitamin D.YouTube: Dr. Bell Health · 2.4K views · Oct 2025

    Also in the top 20 of ?

    Search Google for Thorne Vitamin D/K2 Liquid
  2. #2up 1 place since last weekVitamin D3 2000 IU SoftgelsNature MadeLast week #3 · 16 weeks in top 20

    AI places · this week ?

    1. GPTnot named
    2. Claude#8
    3. Gemininot named
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 1/6

    The card’s #2 is the 4-week average.

    People · October 2026 check ?

    • Buyers’ rating4.74,920 ratings · Oct 2026
    Search Google for Nature Made Vitamin D3 2000 IU Softgels
  3. #3up 1 place since last weekVitamin Code Raw D3Garden of LifeMonthly check: Passes the checkLast week #4 · 17 weeks in top 20

    AI places · this week ?

    1. GPT#9
    2. Claudenot named
    3. Gemininot named
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 1/6

    The card’s #3 is the 4-week average.

    People · October 2026 check ?

    • Passes the check · buyers and video reviews rate it highly ?
    • Buyers’ rating4.81,857 ratings · Oct 2026
    • Score read from review videos4.5/5read from 2 videos · Oct 2026 ? 12

    Watch · YouTube ?

    ✅ Garden of Life Vitamin D, Vitamin Code Raw D3YouTube: Amazon product research · 508 views · Oct 2023
    Search Google for Garden of Life Vitamin Code Raw D3
  4. #4down 2 places since last weekVitamin D3 + K2Sports ResearchLast week #2 · 19 weeks in top 20

    AI places · this week ?

    1. GPTnot named
    2. Claudenot named
    3. Gemininot named
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 0/6

    The card’s #4 is the 4-week average.

    People · October 2026 check ?

    • Buyers’ rating4.813,011 ratings · Aug 2026

    Watch · YouTube ?

    Sports Research Vitamin D3 + K2 Review | Plant-Based with Coconut MCT OilYouTube: Checkmark Academy · 678 views · Sep 2025
    Search Google for Sports Research Vitamin D3 + K2
  5. #5same place as last weekThorne Vitamin D3 5,000 IUThorneLast week #5 · 6 weeks in top 20

    AI places · this week ?

    1. GPTnot named
    2. Claudenot named
    3. Gemini#1
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 1/6

    The card’s #5 is the 4-week average.

    People · October 2026 check ?

    • Buyers’ rating4.23,593 ratings · Oct 2026
    Search Google for Thorne Vitamin D3 5,000 IU
  6. #6up 1 place since last weekVitamin D3 5000 IU with Coconut OilSports ResearchLast week #7 · 8 weeks in top 20

    AI places · this week ?

    1. GPT#6
    2. Claudenot named
    3. Gemininot named
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 1/6

    The card’s #6 is the 4-week average.

    People · October 2026 check ?

    • Buyers’ rating4.81,035 ratings · Oct 2026

    Watch · YouTube ?

    Sports Research Vitamin D3 5000 IU with Coconut MCT Oil High ReviewYouTube: Wizard Review · 10 views · Oct 2024
    Search Google for Sports Research Vitamin D3 5000 IU with Coconut Oil
  7. #7up 4 places since last weekEssential Vitamin D3Ritualnot checkedLast week #11 · 4 weeks in top 20

    AI places · this week ?

    1. GPTnot named
    2. Claudenot named
    3. Gemini#12
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 1/6

    The card’s #7 is the 4-week average.

    Not in the October 2026 check ?

    Search Google for Ritual Essential Vitamin D3
  8. #8up 10 places since last weekVitamin D-5,000Thornenot checkedLast week #18 · 2 weeks in top 20

    AI places · this week ?

    1. GPTnot named
    2. Claudenot named
    3. Gemininot named
    4. AI Modenot named
    5. Groknot named
    6. Perplexity#3

    named by 1/6

    The card’s #8 is the 4-week average.

    Not in the October 2026 check ?

    Search Google for Thorne Vitamin D-5,000
  9. #9up 12 places since last weekNature Made Vitamin D3 2,000 IU SoftgelsNature MadeDebutnot checkedLast week #21 · 1 week in top 20

    AI places · this week ?

    1. GPTnot named
    2. Claudenot named
    3. Gemininot named
    4. AI Modenot named
    5. Groknot named
    6. Perplexity#2

    named by 1/6

    The card’s #9 is the 4-week average.

    Not in the October 2026 check ?

    Search Google for Nature Made Vitamin D3 2,000 IU Softgels
  10. #10down 1 place since last weekVitamin D and K with Sea-IodineLife Extensionnot checkedLast week #9 · 2 weeks in top 20

    AI places · this week ?

    1. GPTnot named
    2. Claudenot named
    3. Gemininot named
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 0/6

    The card’s #10 is the 4-week average.

    Not in the October 2026 check ?

    Search Google for Life Extension Vitamin D and K with Sea-Iodine
  11. #11down 5 places since last weekNordic Naturals Vitamin D3 1,000 IUNordic Naturalsnot checkedLast week #6 · 4 weeks in top 20

    AI places · this week ?

    1. GPTnot named
    2. Claudenot named
    3. Gemininot named
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 0/6

    The card’s #11 is the 4-week average.

    Not in the October 2026 check ?

    Search Google for Nordic Naturals Vitamin D3 1,000 IU
  12. #12up 11 places since last weekSolgar Vitamin D3 5,000 IUSolgarDebutnot checkedLast week #23 · 1 week in top 20

    AI places · this week ?

    1. GPTnot named
    2. Claudenot named
    3. Gemini#9
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 1/6

    The card’s #12 is the 4-week average.

    Not in the October 2026 check ?

    Search Google for Solgar Vitamin D3 5,000 IU
  13. #13up 29 places since last weekNOW Foods Vitamin D3 10,000 IUNOW FoodsRe-entrynot checkedLast week #42 · 2 weeks in top 20

    AI places · this week ?

    1. GPTnot named
    2. Claudenot named
    3. Gemini#8
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 1/6

    The card’s #13 is the 4-week average.

    Not in the October 2026 check ?

    Search Google for NOW Foods Vitamin D3 10,000 IU
  14. #14same place as last weekVitamin D3 25 mcg (1,000 IU) CapsulesPure Encapsulationsnot checkedLast week #14 · 2 weeks in top 20

    AI places · this week ?

    1. GPTnot named
    2. Claudenot named
    3. Gemininot named
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 0/6

    The card’s #14 is the 4-week average.

    Not in the October 2026 check ?

    Search Google for Pure Encapsulations Vitamin D3 25 mcg (1,000 IU) Capsules
  15. #15up 32 places since last weekLife Extension Vitamin D3 5,000 IULife ExtensionDebutBiggest climbnot checkedLast week #47 · 1 week in top 20

    AI places · this week ?

    1. GPTnot named
    2. Claudenot named
    3. Gemini#6
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 1/6

    The card’s #15 is the 4-week average.

    Not in the October 2026 check ?

    Search Google for Life Extension Vitamin D3 5,000 IU
  16. #16down 3 places since last weekVitamin D3 5000 IUPure EncapsulationsLast week #13 · 13 weeks in top 20

    AI places · this week ?

    1. GPT#3
    2. Claudenot named
    3. Gemininot named
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 1/6

    The card’s #16 is the 4-week average.

    People · October 2026 check ?

    • Score read from review videos3.8/5read from 2 videos · Oct 2026 ? 12

    Watch · YouTube ?

    Sundance Vitamin D3 5000 IU LiquidYouTube: The Internet Sorcerer · 1.1K views · Oct 2022
    Search Google for Pure Encapsulations Vitamin D3 5000 IU
  17. #17up 8 places since last weekVitamin Code Raw D3 5,000 IUGarden of LifeDebutnot checkedLast week #25 · 1 week in top 20

    AI places · this week ?

    1. GPTnot named
    2. Claudenot named
    3. Gemininot named
    4. AI Modenot named
    5. Groknot named
    6. Perplexity#9

    named by 1/6

    The card’s #17 is the 4-week average.

    Not in the October 2026 check ?

    Search Google for Garden of Life Vitamin Code Raw D3 5,000 IU
  18. #18up 8 places since last weekVitamin D3 2000 IU SoftgelsKirkland SignatureRe-entrynot checkedLast week #26 · 6 weeks in top 20

    AI places · this week ?

    1. GPTnot named
    2. Claude#9
    3. Gemininot named
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 1/6

    The card’s #18 is the 4-week average.

    Not in the October 2026 check ?

    Watch · YouTube ?

    Kirkland Signature Extra Strength Vitamin D3 2000 I.U. 600 Softgels BottleYouTube: Tim Cook · 495 views · Sep 2020
    Search Google for Kirkland Signature Vitamin D3 2000 IU Softgels
  19. #19up 16 places since last weekVitamin D3 5000 IUJarrow FormulasRe-entrynot checkedLast week #35 · 7 weeks in top 20

    AI places · this week ?

    1. GPT#16
    2. Claudenot named
    3. Gemininot named
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 1/6

    The card’s #19 is the 4-week average.

    Not in the October 2026 check ?

    Search Google for Jarrow Formulas Vitamin D3 5000 IU
  20. #20down 10 places since last weekMegaFood Vitamin D3 2,000 IUMegaFoodnot checkedLast week #10 · 5 weeks in top 20

    AI places · this week ?

    1. GPTnot named
    2. Claudenot named
    3. Gemininot named
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 0/6

    The card’s #20 is the 4-week average.

    Not in the October 2026 check ?

    Search Google for MegaFood Vitamin D3 2,000 IU

Dropped out of the top 20 ?

Show places 21–100Hide places 21–100
  1. #21Pure Encapsulations Vitamin D3 1,000 IUPure Encapsulations · last wk #8 3 wks in top 20
  2. #22Nordic Naturals Vitamin D3 5,000 IUNordic Naturals · last wk #12 1 wk in top 20
  3. #23Pure Encapsulations Vitamin D3 5,000 IUPure Encapsulations · last wk #19 1 wk in top 20
  4. #24Vitamin D3 1000 Soft GelsNordic Naturals · last wk #22 0 wks in top 20
  5. #25Vitamin D3 5000 IULife Extension · last wk #17 14 wks in top 20
  6. #26Vitamin D-5000Thorne · last wk #28 6 wks in top 20
  7. #27Doctor's Best Vitamin D3 5000 IU SoftgelsDoctor's Best · last wk #34 0 wks in top 20
  8. #28Vitamin D-3 5,000 IUNOW Foods · last wk #43 0 wks in top 20
  9. #29Vitamin D3 2000 IUMegaFood · last wk #37 1 wk in top 20
  10. #30Vitamin Code Raw D3 5000 IU CapsulesGarden of Life · last wk — 0 wks in top 20
  11. #31mykind Organics Vitamin D3 Organic SprayGarden of Life · last wk #30 0 wks in top 20
  12. #32Vitamin D3 5000 IU SoftgelsJarrow Formulas · last wk #46 0 wks in top 20
  13. #33Vitamin D3 5000Nordic Naturals · last wk #90 0 wks in top 20
  14. #34Jarrow Formulas Vitamin D3 5,000 IUJarrow Formulas · last wk #33 1 wk in top 20
  15. #35Vitamin D3 + K2 with Organic Coconut Oil SoftgelsSports Research · last wk — 0 wks in top 20
  16. #36Carlson Vitamin D3 4000 IUCarlson · last wk — 0 wks in top 20
  17. #37Nature Made Vitamin D3 5000 IUNature Made · last wk #51 3 wks in top 20
  18. #38Vitamin D3 4,000 IUCarlson · last wk #38 0 wks in top 20
  19. #39Vitamin D-3 5000 IUNOW Foods · last wk #40 6 wks in top 20
  20. #40Vitamin D-3 5000 IU SoftgelsNOW Foods · last wk — 11 wks in top 20
  21. #41Essential for Women 18+Ritual · last wk #36 1 wk in top 20
  22. #42Nature Made Vitamin D3 2,000 IUNature Made · last wk — 0 wks in top 20
  23. #43Nature Made Vitamin D3 5,000 IUNature Made · last wk #39 0 wks in top 20
  24. #44Vitamin D3 5,000 IUDoctor's Best · last wk #45 3 wks in top 20
  25. #45Vitamin D3 1,000 IU CapsulesPure Encapsulations · last wk #15 3 wks in top 20
  26. #46Vitamin D3 + K2 with Organic Coconut OilSports Research · last wk #20 4 wks in top 20
  27. #47Vitamin D3 5000 IUDoctor's Best · last wk #93 11 wks in top 20
  28. #48Pure Encapsulations Vitamin D3 + K2Pure Encapsulations · last wk #41 0 wks in top 20
  29. #49Thorne Vitamin D3 10000 IU Liquid 2026Thorne · last wk — 0 wks in top 20
  30. #50Baby's Super Daily D3 DropsCarlson · last wk #53 0 wks in top 20
  31. #51D3/K2 Liquid 2026 EditionThorne · last wk #54 0 wks in top 20
  32. #52Vegan Vitamin D3 + K2Sports Research · last wk #55 0 wks in top 20
  33. #53Vitamin D3 Gummies SportNordic Naturals · last wk — 0 wks in top 20
  34. #54Nature Made Vitamin D3 5000 IU 2026 SoftgelsNature Made · last wk #56 0 wks in top 20
  35. #55NOW Foods Vitamin D3 5000 IU Softgels UltraNOW Foods · last wk — 0 wks in top 20
  36. #56Vitamin D3 + K2 Liquid DropsMaryRuth Organics · last wk #59 0 wks in top 20
  37. #57Vitamin D3 5000 IUSolgar · last wk #80 4 wks in top 20
  38. #58Thorne Research D3/K2 Liquid DropsThorne Research · last wk #57 0 wks in top 20
  39. #59Vitamin D3 5000 IU 2025 CapsulesPure Encapsulations · last wk #58 0 wks in top 20
  40. #60Vitamin D-5000 CapsulesThorne · last wk — 0 wks in top 20
  41. #61Nature Made Vitamin D3 1,000 IUNature Made · last wk #27 0 wks in top 20
  42. #62D/K2 Liquid Drops 2025 FormulaThorne · last wk #61 0 wks in top 20
  43. #63Vitamin D3 2000 IUNature Made · last wk #29 13 wks in top 20
  44. #64D3 2000 IU Gummies MaxNature Made · last wk — 0 wks in top 20
  45. #65Vitamin D3 25 mcg (1000 IU) CapsulesPure Encapsulations · last wk — 0 wks in top 20
  46. #66Ultimate D3 5000 IU SoftgelsNordic Naturals · last wk #62 0 wks in top 20
  47. #67Thorne Vitamin D-3 2,000 IUThorne · last wk #63 0 wks in top 20
  48. #68Vitamin D3 5000 Gummies 2026Nordic Naturals · last wk #65 0 wks in top 20
  49. #69Transparent Labs Vitamin D3+K2Transparent Labs · last wk — 4 wks in top 20
  50. #70Vitamin D3 2000 IUKirkland Signature · last wk — 7 wks in top 20
  51. #71Vitamin D3 10000 IU Capsules 2026 EditionNOW Foods · last wk #68 0 wks in top 20
  52. #72mykind Organic D3 5000 SprayGarden of Life · last wk — 0 wks in top 20
  53. #73Vitamin D3 1000Nordic Naturals · last wk — 0 wks in top 20
  54. #74Vitamin D3 1000 IU Soft GelsNordic Naturals · last wk #69 0 wks in top 20
  55. #75Super Daily D3 + K2Carlson · last wk #16 3 wks in top 20
  56. #761st Phorm Liposomal Vitamin D31st Phorm · last wk — 4 wks in top 20Passes the check
  57. #77Vitamin D-3 2000 IU SoftgelsNOW Foods · last wk #76 0 wks in top 20
  58. #78mykind Organics D3 5000 IU GummiesGarden of Life · last wk #77 0 wks in top 20
  59. #79High-Potency Vitamin D3 5,000 IUNOW · last wk #78 0 wks in top 20
  60. #80Fermented Vitamin D3New Chapter · last wk #64 0 wks in top 20
  61. #81Country Life Vitamin D3 5000 IUCountry Life · last wk #50 0 wks in top 20
  62. #82Vitamin D SupremeDesigns for Health · last wk — 3 wks in top 20
  63. #83Vitamin D3 + K2 2,500 IUSports Research · last wk #81 0 wks in top 20
  64. #84Super Daily D3 4000 IUCarlson Labs · last wk #86 0 wks in top 20
  65. #85Mary Ruth Organics Organic Vitamin D3 Liquid DropsMaryRuth Organics · last wk #82 0 wks in top 20
  66. #86Vitamin D3 Liquid 1,000 IUNordic Naturals · last wk — 0 wks in top 20
  67. #87Vitamin D3 GummiesNordic Naturals · last wk #87 14 wks in top 20
  68. #88Nordic Naturals Vitamin D3 1000 IU SoftgelsNordic Naturals · last wk — 0 wks in top 20
  69. #89mykind Organics D3 5000 IU SprayGarden of Life · last wk #88 0 wks in top 20
  70. #90Vitamin D3 5,000 IU with Coconut OilSports Research · last wk — 1 wk in top 20
  71. #91Vitamin D3 1000 IU GummiesNordic Naturals · last wk #31 0 wks in top 20
  72. #92Vitamin D3 and K2 DropsDouble Wood · last wk #89 0 wks in top 20
  73. #93Nordic Naturals Vitamin D3 1000 IUNordic Naturals · last wk #52 0 wks in top 20
  74. #94mykind Organics Vitamin D3 SprayGarden of Life · last wk #92 3 wks in top 20
  75. #95NOW Foods Vitamin D-3 2000 IUNOW Foods · last wk — 5 wks in top 20Passes the check
  76. #96NatureWise Vitamin D3 5,000 IUNatureWise · last wk — 0 wks in top 20
  77. #97Vitamin D3 5000 IU CapsulesPure Encapsulations · last wk #91 0 wks in top 20
  78. #98Vitamin D-3 5,000 IU SoftgelsNOW Foods · last wk #32 6 wks in top 20
  79. #99NOW Foods Vitamin D3 5000 IU SoftgelsNOW Foods · last wk #96 0 wks in top 20
  80. #100NOW Foods Vitamin D3 1000 IU SoftgelsNOW Foods · last wk #95 0 wks in top 20

Brand chart

Current race ?

This week ?

Thorne holds #1.

#1 in 5 of the last 19 weeks

All 21 moves ↓

Tap a card for its products here, its price tier and other charts.

#BrandPlace by weekLast weekWeeks in top 20Top-20 weeks
  1. #1same place as last weekThorneModels here: #1 Vitamin D/K2 Liquid · #5 Thorne Vitamin D3 5,000 IU · +7Last week #1 · 19 weeks in top 20

    Thorne products here ?

    9 products in the top 100 · 3 in the top 20

    1. #1 Vitamin D/K2 LiquidPasses the check: buyers 4.8★ · video reviews 4.3/5
    2. #5 Thorne Vitamin D3 5,000 IUBuyers’ rating 4.2 · 3.6K ratings · Oct 2026
    3. #8 Vitamin D-5,000not checked
    4. #26 Vitamin D-5000below the top 20
    5. #49 Thorne Vitamin D3 10000 IU Liquid 2026below the top 20

    Where Thorne is strong · top 20 ?

    Search Google for Thorne vitamin d supplements
  2. #2up 1 place since last weekNordic NaturalsModels here: #11 Nordic Naturals Vitamin D3 1,000 IU · #22 Nordic Naturals Vitamin D3 5,000 IU · +12Last week #3 · 19 weeks in top 20

    Nordic Naturals products here ?

    14 products in the top 100 · 1 in the top 20

    1. #11 Nordic Naturals Vitamin D3 1,000 IUnot checked
    2. #22 Nordic Naturals Vitamin D3 5,000 IUbelow the top 20
    3. #24 Vitamin D3 1000 Soft Gelsbelow the top 20
    4. #33 Vitamin D3 5000below the top 20
    5. #53 Vitamin D3 Gummies Sportbelow the top 20

    Where Nordic Naturals is strong · top 20 ?

    Search Google for Nordic Naturals vitamin d supplements
  3. #3up 1 place since last weekNature MadeModels here: #2 Vitamin D3 2000 IU Softgels · #9 Nature Made Vitamin D3 2,000 IU Softgels · +7Last week #4 · 19 weeks in top 20

    Nature Made products here ?

    9 products in the top 100 · 2 in the top 20

    1. #2 Vitamin D3 2000 IU SoftgelsBuyers’ rating 4.7 · 4.9K ratings · Oct 2026
    2. #9 Nature Made Vitamin D3 2,000 IU Softgelsnot checked
    3. #37 Nature Made Vitamin D3 5000 IUbelow the top 20
    4. #42 Nature Made Vitamin D3 2,000 IUbelow the top 20
    5. #43 Nature Made Vitamin D3 5,000 IUbelow the top 20

    Where Nature Made is strong · top 20 ?

    Search Google for Nature Made vitamin d supplements
  4. #4down 2 places since last weekPure EncapsulationsModels here: #14 Vitamin D3 25 mcg (1,000 IU) Capsules · #16 Vitamin D3 5000 IU · +7Last week #2 · 19 weeks in top 20

    Pure Encapsulations products here ?

    9 products in the top 100 · 2 in the top 20

    1. #14 Vitamin D3 25 mcg (1,000 IU) Capsulesnot checked
    2. #16 Vitamin D3 5000 IUScore read from review videos: 3.8/5 from video
    3. #21 Pure Encapsulations Vitamin D3 1,000 IUbelow the top 20
    4. #23 Pure Encapsulations Vitamin D3 5,000 IUbelow the top 20
    5. #45 Vitamin D3 1,000 IU Capsulesbelow the top 20

    Where Pure Encapsulations is strong · top 20 ?

    Search Google for Pure Encapsulations vitamin d supplements
  5. #5up 1 place since last weekGarden of LifeModels here: #3 Vitamin Code Raw D3 · #17 Vitamin Code Raw D3 5,000 IU · +6Last week #6 · 19 weeks in top 20

    Garden of Life products here ?

    8 products in the top 100 · 2 in the top 20

    1. #3 Vitamin Code Raw D3Passes the check: buyers 4.8★ · video reviews 4.5/5
    2. #17 Vitamin Code Raw D3 5,000 IUnot checked
    3. #30 Vitamin Code Raw D3 5000 IU Capsulesbelow the top 20
    4. #31 mykind Organics Vitamin D3 Organic Spraybelow the top 20
    5. #72 mykind Organic D3 5000 Spraybelow the top 20

    Where Garden of Life is strong · top 20 ?

    Search Google for Garden of Life vitamin d supplements
  6. #6down 1 place since last weekNOW FoodsModels here: #13 NOW Foods Vitamin D3 10,000 IU · #28 Vitamin D-3 5,000 IU · +9Last week #5 · 19 weeks in top 20

    NOW Foods products here ?

    11 products in the top 100 · 1 in the top 20

    1. #13 NOW Foods Vitamin D3 10,000 IUnot checked
    2. #28 Vitamin D-3 5,000 IUbelow the top 20
    3. #39 Vitamin D-3 5000 IUbelow the top 20
    4. #40 Vitamin D-3 5000 IU Softgelsbelow the top 20
    5. #55 NOW Foods Vitamin D3 5000 IU Softgels Ultrabelow the top 20

    Where NOW Foods is strong · top 20 ?

    Search Google for NOW Foods vitamin d supplements
  7. #7same place as last weekSports ResearchModels here: #4 Vitamin D3 + K2 · #6 Vitamin D3 5000 IU with Coconut Oil · +5Last week #7 · 19 weeks in top 20

    Sports Research products here ?

    7 products in the top 100 · 2 in the top 20

    1. #4 Vitamin D3 + K2Buyers’ rating 4.8 · 13K ratings · Aug 2026
    2. #6 Vitamin D3 5000 IU with Coconut OilBuyers’ rating 4.8 · 1K ratings · Oct 2026
    3. #35 Vitamin D3 + K2 with Organic Coconut Oil Softgelsbelow the top 20
    4. #46 Vitamin D3 + K2 with Organic Coconut Oilbelow the top 20
    5. #52 Vegan Vitamin D3 + K2below the top 20

    Where Sports Research is strong · top 20 ?

    Search Google for Sports Research vitamin d supplements
  8. #8same place as last weekLife ExtensionModels here: #10 Vitamin D and K with Sea-Iodine · #15 Life Extension Vitamin D3 5,000 IU · +1Last week #8 · 19 weeks in top 20

    Life Extension products here ?

    3 products in the top 100 · 2 in the top 20

    1. #10 Vitamin D and K with Sea-Iodinenot checked
    2. #15 Life Extension Vitamin D3 5,000 IUnot checked
    3. #25 Vitamin D3 5000 IUbelow the top 20

    Where Life Extension is strong · top 20 ?

    Search Google for Life Extension vitamin d supplements
  9. #9same place as last weekSolgarModels here: #12 Solgar Vitamin D3 5,000 IU · #57 Vitamin D3 5000 IULast week #9 · 19 weeks in top 20

    Solgar products here ?

    2 products in the top 100 · 1 in the top 20

    1. #12 Solgar Vitamin D3 5,000 IUnot checked
    2. #57 Vitamin D3 5000 IUbelow the top 20

    Where Solgar is strong · top 20 ?

    Search Google for Solgar vitamin d supplements
  10. #10same place as last weekDoctor's BestModels here: #27 Doctor's Best Vitamin D3 5000 IU Softgels · #44 Vitamin D3 5,000 IU · +1Last week #10 · 19 weeks in top 20

    Doctor's Best products here ?

    3 products in the top 100 · 0 in the top 20

    1. #27 Doctor's Best Vitamin D3 5000 IU Softgelsbelow the top 20
    2. #44 Vitamin D3 5,000 IUbelow the top 20
    3. #47 Vitamin D3 5000 IUbelow the top 20

    Where Doctor's Best is strong · top 20 ?

    Search Google for Doctor's Best vitamin d supplements
  11. #11same place as last weekJarrow FormulasModels here: #19 Vitamin D3 5000 IU · #32 Vitamin D3 5000 IU Softgels · +1Last week #11 · 19 weeks in top 20

    Jarrow Formulas products here ?

    3 products in the top 100 · 1 in the top 20

    1. #19 Vitamin D3 5000 IUnot checked
    2. #32 Vitamin D3 5000 IU Softgelsbelow the top 20
    3. #34 Jarrow Formulas Vitamin D3 5,000 IUbelow the top 20

    Where Jarrow Formulas is strong · top 20 ?

    Search Google for Jarrow Formulas vitamin d supplements
  12. #12same place as last weekCarlsonModels here: #36 Carlson Vitamin D3 4000 IU · #38 Vitamin D3 4,000 IU · +2Last week #12 · 16 weeks in top 20

    Carlson products here ?

    4 products in the top 100 · 0 in the top 20

    1. #36 Carlson Vitamin D3 4000 IUbelow the top 20
    2. #38 Vitamin D3 4,000 IUbelow the top 20
    3. #50 Baby's Super Daily D3 Dropsbelow the top 20
    4. #75 Super Daily D3 + K2below the top 20

    Where Carlson is strong · top 20 ?

    Search Google for Carlson vitamin d supplements
  13. #13same place as last weekMegaFoodModels here: #20 MegaFood Vitamin D3 2,000 IU · #29 Vitamin D3 2000 IULast week #13 · 19 weeks in top 20

    MegaFood products here ?

    2 products in the top 100 · 1 in the top 20

    1. #20 MegaFood Vitamin D3 2,000 IUnot checked
    2. #29 Vitamin D3 2000 IUbelow the top 20

    Where MegaFood is strong · top 20 ?

    Search Google for MegaFood vitamin d supplements
  14. #14same place as last weekKirkland SignatureModels here: #18 Vitamin D3 2000 IU Softgels · #70 Vitamin D3 2000 IULast week #14 · 19 weeks in top 20

    Kirkland Signature products here ?

    2 products in the top 100 · 1 in the top 20

    1. #18 Vitamin D3 2000 IU Softgelsnot checked
    2. #70 Vitamin D3 2000 IUbelow the top 20

    Where Kirkland Signature is strong · top 20 ?

    Search Google for Kirkland Signature vitamin d supplements
  15. #15same place as last weekRitualModels here: #7 Essential Vitamin D3 · #41 Essential for Women 18+Last week #15 · 16 weeks in top 20

    Ritual products here ?

    2 products in the top 100 · 1 in the top 20

    1. #7 Essential Vitamin D3not checked
    2. #41 Essential for Women 18+below the top 20

    Where Ritual is strong · top 20 ?

    Search Google for Ritual vitamin d supplements
  16. #16up 1 place since last weekDesigns for HealthModels here: #82 Vitamin D SupremeLast week #17 · 15 weeks in top 20

    Designs for Health products here ?

    1 product in the top 100 · 0 in the top 20

    1. #82 Vitamin D Supremebelow the top 20

    Where Designs for Health is strong · top 20 ?

    Search Google for Designs for Health vitamin d supplements
  17. #17down 1 place since last weekCountry LifeModels here: #81 Country Life Vitamin D3 5000 IULast week #16 · 8 weeks in top 20

    Country Life products here ?

    1 product in the top 100 · 0 in the top 20

    1. #81 Country Life Vitamin D3 5000 IUbelow the top 20
    Search Google for Country Life vitamin d supplements
  18. #18up 2 places since last weekCarlson LabsModels here: #84 Super Daily D3 4000 IULast week #20 · 19 weeks in top 20

    Carlson Labs products here ?

    1 product in the top 100 · 0 in the top 20

    1. #84 Super Daily D3 4000 IUbelow the top 20

    Where Carlson Labs is strong · top 20 ?

    Search Google for Carlson Labs vitamin d supplements
  19. #19same place as last weekNature's BountyAlso #16 Best Sleep Supplements · #20 Best ProbioticsLast week #19 · 13 weeks in top 20

    AI places · this week ?

    1. GPT#14
    2. Claude#28
    3. Gemininot named
    4. AI Modenot named
    5. Groknot named
    6. Perplexitynot named

    named by 2/6

    Where each AI put its first product. The card’s #19 is the 4-week average.

    Where Nature's Bounty is strong · top 20 ?

    Search Google for Nature's Bounty vitamin d supplements
  20. #20down 2 places since last weekVitafusionLast week #18 · 3 weeks in top 20

    AI places · this week ?

    1. GPT#24
    2. Claude#13
    3. Gemininot named
    4. AI Modenot named
    5. Groknot named
    6. Perplexity#29

    named by 3/6

    Where each AI put its first product. The card’s #20 is the 4-week average.

    Search Google for Vitafusion vitamin d supplements
Show places 21–96Hide places 21–96
  1. #21OLLYlast wk #24 0 wks in top 20
  2. #22Klaire Labslast wk #25 1 wk in top 20
  3. #23MaryRuth Organicslast wk #21 5 wks in top 20
  4. #24Metagenicslast wk #22 0 wks in top 20
  5. #25NatureWiselast wk #26 9 wks in top 20
  6. #26Seeking Healthlast wk #27 2 wks in top 20
  7. #27Bluebonnetlast wk #23 0 wks in top 20
  8. #28Bluebonnet Nutritionlast wk #30 2 wks in top 20
  9. #29Mary Ruth'slast wk #31 0 wks in top 20
  10. #30Douglas Laboratorieslast wk #32 0 wks in top 20
  11. #31Theralogixlast wk #39 0 wks in top 20
  12. #32Vital Proteinslast wk #28 0 wks in top 20
  13. #33Nutricostlast wk #46 0 wks in top 20
  14. #34New Chapterlast wk #29 0 wks in top 20
  15. #35Transparent Labslast wk #63 3 wks in top 20
  16. #361st Phormlast wk #77 3 wks in top 20
  17. #37Thorne Researchlast wk #37 8 wks in top 20
  18. #38Source Naturalslast wk #34 0 wks in top 20
  19. #39Double Woodlast wk #36 0 wks in top 20
  20. #40NOWlast wk #38 0 wks in top 20
  21. #41Xymogenlast wk #41 0 wks in top 20
  22. #42SmartyPantslast wk #35 0 wks in top 20
  23. #43Hum Nutritionlast wk #45 3 wks in top 20
  24. #44Ddropslast wk #42 0 wks in top 20
  25. #45Amazonlast wk #43 0 wks in top 20
  26. #46Bronsonlast wk #47 0 wks in top 20
  27. #47Mindbodygreenlast wk #44 1 wk in top 20
  28. #48Orthomolecularlast wk #40 0 wks in top 20
  29. #49Nature's Waylast wk #53 0 wks in top 20
  30. #50Purely Inspiredlast wk #58 0 wks in top 20
  31. #51Biotics Researchlast wk #51 0 wks in top 20
  32. #52Apex Energeticslast wk #50 0 wks in top 20
  33. #53California Gold Nutritionlast wk #52 0 wks in top 20
  34. #54Kirklandlast wk — 0 wks in top 20
  35. #55Qunollast wk #48 0 wks in top 20
  36. #56Zahlerlast wk #69 0 wks in top 20
  37. #57Momentouslast wk — 0 wks in top 20
  38. #58BetterYoulast wk #54 0 wks in top 20
  39. #59KALlast wk — 0 wks in top 20
  40. #60Webber Naturalslast wk #60 0 wks in top 20
  41. #61Llamalast wk #55 0 wks in top 20
  42. #62Integrative Therapeuticslast wk #56 0 wks in top 20
  43. #63Nutrigoldlast wk #33 0 wks in top 20
  44. #64Neededlast wk #59 0 wks in top 20
  45. #65Mommy's Blisslast wk #61 0 wks in top 20
  46. #66Enfamillast wk #62 0 wks in top 20
  47. #67Nutrition Geekslast wk #65 0 wks in top 20
  48. #68Rainbow Lightlast wk #84 0 wks in top 20
  49. #69ChildLifelast wk #66 0 wks in top 20
  50. #70Barelast wk #68 0 wks in top 20
  51. #71Seedlast wk #67 0 wks in top 20
  52. #72Swansonlast wk #72 0 wks in top 20
  53. #73Igennus Healthcare Nutritionlast wk — 0 wks in top 20
  54. #74Solaraylast wk #70 0 wks in top 20
  55. #75Vitabioticslast wk #73 0 wks in top 20
  56. #76Vitamin Codelast wk #71 0 wks in top 20
  57. #77Kanekalast wk #91 0 wks in top 20
  58. #78Vital Nutrientslast wk #87 0 wks in top 20
  59. #79Viva Naturalslast wk #75 0 wks in top 20
  60. #80Gaia Herbslast wk #74 0 wks in top 20
  61. #81Bio-Tech Pharmacallast wk — 1 wk in top 20
  62. #82EuroMedicalast wk — 0 wks in top 20
  63. #83Golilast wk — 0 wks in top 20
  64. #84Legionlast wk — 0 wks in top 20
  65. #85Ortho Molecular Productslast wk — 0 wks in top 20
  66. #86Performance Lablast wk — 0 wks in top 20
  67. #87Protocol for Life Balancelast wk — 0 wks in top 20
  68. #88Vegan Vitamin Dlast wk — 0 wks in top 20
  69. #89Ora Organiclast wk #82 0 wks in top 20
  70. #90Codeagelast wk #85 0 wks in top 20
  71. #91NutriDynlast wk #88 0 wks in top 20
  72. #92Caltratelast wk #79 0 wks in top 20
  73. #93Renzo'slast wk #81 0 wks in top 20
  74. #94Nutricologylast wk #80 0 wks in top 20
  75. #95Allergy Research Grouplast wk #78 0 wks in top 20
  76. #96Fullscriptlast wk #93 0 wks in top 20

The monthly check covers products; a brand is marked “Passes the check” only when its products here pass. See the product check → ?

The AI panel ?

Where the AIs disagree.

Each AI’s place for the top 10, in its own answer this week. Rows in chart order; an empty cell: not named this week.well above the other AIs well below not named this week ?
Place on this chartProductChatGPTClaudeGeminiAI ModeGrokPerplexityNamed by
#1Vitamin D/K2 Liquid11/6
#2Vitamin D3 2000 IU Softgels81/6
#3Vitamin Code Raw D391/6
#4Vitamin D3 + K20/6
#5Thorne Vitamin D3 5,000 IU11/6
#6Vitamin D3 5000 IU with Coconut Oil61/6
#7Essential Vitamin D3121/6
#8Vitamin D-5,00031/6
#9Nature Made Vitamin D3 2,000 IU Softgels21/6
#10Vitamin D and K with Sea-Iodine0/6

Further down: ChatGPT’s #1 Vitamin D-5000 (#26 on this chart)Grok’s #1 Thorne Vitamin D3 10000 IU Liquid 2026 (#49 on this chart)Perplexity’s #1 1st Phorm Liposomal Vitamin D3 (#76 on this chart)

The AI panel ?

Where the AIs disagree.

Each AI’s place for the top 10 brands: where it put the brand’s highest-placed product this week. Rows in chart order; an empty cell: not named this week.well above the other AIs well below not named this week ?
Place on this chartBrandChatGPTClaudeGeminiAI ModeGrokPerplexityNamed by
#1Thorne111135/6
#2Nordic Naturals424545/6
#3Nature Made283325/6
#4Pure Encapsulations3359125/6
#5Garden of Life967495/6
#6NOW Foods548285/6
#7Sports Research672, well above the others18, well below the others65/6
#8Life Extension75610, well below the others16, well below the others5/6
#9Solgar1126, well below the others9114/6
#10Doctor's Best151221, well below the others6, well above the others4/6

Further down: Perplexity’s #1 1st Phorm (#36 on this chart)

The monthly check · October 2026 ?

Where people agree with AI.

The check has not reached most of this chart’s top 20 yet.

  1. Thorne Vitamin D/K2 LiquidPasses the checkAI saysChart place#1named by 1 of 6People sayBuyers4.8/510,259 ratingsVideo reviews4.3/52 videos12
  2. Garden of Life Vitamin Code Raw D3Passes the checkAI saysChart place#3named by 1 of 6People sayBuyers4.8/51,857 ratingsVideo reviews4.5/52 videos12

See all checked products in the chart ↓ ?

Reviews by people · YouTube and TikTok ?

The reviews behind the chart.

10 review videos · one shown per product

2 more reviewsFewer reviews

The data behind this chart ?

What this ranking stands on.

From the AI panel 122 AI answers over 22 weeks from 6 assistants

From people

  • Buyer ratings483,255
  • Review videos27
  • Owner threads16
  • Recall checks17

Before you buy

Questions buyers ask.

  • Who is #1 for “Best Vitamin D Supplements”, and for how long?

    Thorne Vitamin D/K2 Liquid is the #1 product this week, and has been #1 for 5 of the last 19 weeks. Thorne is the #1 brand, #1 for 5 of those weeks.

  • What changed on this chart in the last four weeks?

    13 of the top 20 products were not in the top 20 four weeks ago. The #1 then was Thorne Vitamin D/K2 Liquid, and it is still #1. Among brands, 2 new names joined the top 20.

Data as of November 2 ?

Embed this chart

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New #1s, debuts and the picks that fail the check, from every chart. We will write only when there is news.