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Label data · how much vitamin d3 per day

Vitamin D3: IU per serving on every vitamin D label we carry

Vitamin D labels print IU and mcg (2,000 IU = 50 mcg; 5,000 IU = 125 mcg). The NIH lists 4,000 IU a day as the tolerable upper intake for adults without a doctor's supervision, which is why 2,000 IU is the everyday choice and 5,000 IU is for people a doctor told to take more. The table lists the printed amount per serving for every product with vitamin D we track, including D3 + K2 combinations.

7 labels we read

Lowest
25 IU
Median
5,000 IU
Highest
5,000 IU

Vitamin D3 per serving as printed on the Supplement Facts panel of each product below · 1 of them print a third-party certification.

What to check on the label

  • IU (or mcg) per softgel — and whether a serving is one or two
  • D3 (cholecalciferol) vs D2
  • K2 (MK-7) amount if it's a combination product

Fat-soluble: too much accumulates. Stay under the NIH upper limit (4,000 IU/day) unless a doctor tells you otherwise.

Vitamin D3 on each label we carry

Sorted by the printed amount. Tap a row to see it on eBay; the product page has the full label.

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  1. Thorne Vitamin D-5,000

    Thorne Vitamin D-5,000

    Vitamin D3: 5,000 IU per serving

    Things to consider: 5,000 IU is a high daily dose — best used with your doctor's guidance and a vitamin D blood test.

    Vitamin D3 5,000 IUForm CapsuleAmazon Full facts →
  2. NOW Foods Vitamin D-3 5,000 IU

    NOW Foods Vitamin D-3 5,000 IU

    Vitamin D3: 5,000 IU per serving

    Vitamin D3 5,000 IUServing 1 softgelAmazon Full facts →
  3. Sports Research Vegan Vitamin D3 + K2

    Sports Research Vegan Vitamin D3 + K2

    Vitamin D3: 5,000 IU per serving

    Things to consider: 5,000 IU is a high daily dose — best used with your doctor's guidance and a vitamin D blood test. Vitamin K can affect blood thinners such as warfarin. Contains coconut.

    Vitamin D3 5,000 IUVitamin K2 100 mcgAmazon Full facts →
  4. Bronson Vitamin K2 (MK-7) + D3 5,000 IU

    Bronson Vitamin K2 (MK-7) + D3 5,000 IU

    Vitamin D3: 5,000 IU per serving

    Things to consider: 5,000 IU is above the 4,000 IU adult upper limit for routine daily use — check with your doctor, and avoid vitamin K2 if you take blood thinners.

    Vitamin D3 5,000 IUVitamin K2 (MK-7) 90 mcgAmazon Full facts →
  5. Nature Made Vitamin D3 2000 IU

    Nature Made Vitamin D3 2000 IU

    Vitamin D3: 2000 IU per serving · USP Verified

    Vitamin D3 2000 IUForm SoftgelAmazon Full facts →
  6. Body Fortress Super Advanced Whey Protein

    Body Fortress Super Advanced Whey Protein

    Vitamin D: 25 mcg per serving

    Protein 30 gCalories 180Amazon Full facts →
  7. Goli Nutrition Ashwagandha Gummies with KSM-66

    Goli Nutrition Ashwagandha Gummies with KSM-66

    Vitamin D2: 25 mcg per serving

    Things to consider: Not advised during pregnancy, and stop taking it before surgery. Check with your doctor if you have thyroid or autoimmune conditions.

    KSM-66 ashwagandha 300 mgVitamin D2 25 mcgAmazon Full facts →

Go deeper

Questions people ask

2,000 IU or 5,000 IU of vitamin D3?

2,000 IU (50 mcg) is the everyday label; 5,000 IU (125 mcg) is above the NIH upper limit for unsupervised use and makes sense when a blood test and a doctor say so. Our comparison page puts the two labels side by side.

Do I need K2 with D3?

K2 (usually MK-7, 100–200 mcg) is added to many D3 products; whether you need it is a question for your doctor. The labels here print both amounts when it's a combination.

Part of the open label dataset (CC BY 4.0) · how we read labels · other ingredients: Creatine monohydrate · Whey protein · Plant protein · Collagen peptides · Magnesium · Melatonin · Ashwagandha · Omega-3 (EPA + DHA)