SIDE BY SIDE
See prices, running costs, specifications and trade-offs side by side. Choose two to four products of the same type.
Vitamin D
60 capsules (SKU D138), 5,000 IU (125 mcg) vitamin D3 per capsule
$20US price, checked5,000 IU vitamin D3 capsule with an NSF Certified for Sport listing
Check price at Thorne for Thorne Vitamin D-5,000 Full review →
Vitamin D
Wild berry gummies, 1,000 IU (25 mcg) vitamin D3 each, 120 per Fullscript and NSF (Nordic's page gives no count)
$23.95US price, checked1,000 IU vitamin D3 gummy with an NSF Certified for Sport listing
Check price at Nordic Naturals for Nordic Naturals Vitamin D3 Gummies Sport Full review →| Criterion | Thorne Vitamin D-5,000 | Nordic Naturals Vitamin D3 Gummies Sport |
|---|---|---|
| US price | $20Checked Oct 13, 2026 · Price details in the review | $23.95Checked Oct 13, 2026 · Price details in the review |
| Three-year ownership estimate | $385.01 Planning total. | $242.50 Planning total. |
| Choose if | An adult whose clinician has advised about 5,000 IU of vitamin D3 a day, including an athlete subject to drug testing who wants to match the bottle's lot number to NSF's listing. | An adult, including an athlete subject to drug testing, who wants a modest 1,000 IU daily dose in a chewable and a lot number to check against NSF's listing. |
| Main trade-off | The label dose is above the adult upper intake level, which makes it the wrong strength to take daily on your own, and approved returns carry a 25% restocking fee. | You can't order it from Nordic's own page, each gummy adds 2 g of sugar, and the vitamin D3 source isn't disclosed. |
| Key specifications |
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| Exact variant | 60 capsules (SKU D138), 5,000 IU (125 mcg) vitamin D3 per capsule | Wild berry gummies, 1,000 IU (25 mcg) vitamin D3 each, 120 per Fullscript and NSF (Nordic's page gives no count) |
| Dimensions | Not stated by the manufacturer. Thorne gives 60 one-capsule servings per bottle, but no bottle size, net weight or capsule size. | Not stated by the manufacturer. Nordic's page gives no count, bottle size or net weight. Fullscript lists a single 120-gummy size. NSF's RUS-31142 listing gives a package size of 120. |
| Installation | None. Thorne's directions are to take 1 capsule daily or as recommended by your health-care practitioner. | No installation. Nordic's directions are one gummy daily, with food, or as directed by a healthcare professional or pharmacist. |
| Materials | Each capsule holds 125 mcg (5,000 IU) of vitamin D3. The other ingredients are leucine, microcrystalline cellulose, silicon dioxide, a hypromellose capsule (derived from cellulose) and vitamin E (d-alpha-tocopherol). Thorne labels it gluten free, dairy free and soy free. It also says its vitamin D supplements contain no lactose and no preservatives. Thorne doesn't state the source of the vitamin D3. | The Supplement Facts on Fullscript's catalog listing give vitamin D3 as cholecalciferol (25 mcg, 1,000 IU). The other ingredients are organic tapioca syrup, organic cane sugar, purified water, pectin, citric acid, fumaric acid, natural flavor, sodium citrate dihydrate, and fruit and vegetable juice for color. Nordic and Fullscript both describe the gummies as vegetarian. Fullscript lists no gluten, no milk derivatives and no artificially derived colors or flavors. The source of the vitamin D3 isn't stated. |
| Warranty | Not stated by the manufacturer. The product page gives no warranty. Thorne's returns page describes a 60-day satisfaction guarantee (see returns). | Nordic doesn't state a product warranty. Instead it offers a 60-day satisfaction guarantee. The original end-user purchaser can ask for a refund or replacement within 60 days of purchase, for products bought in the U.S. from nordic.com or an authorized seller (see returns). |
| Returns | Thorne's returns page says you can request a return within 60 days of the date of purchase from Thorne. All approved returns carry a 25% restocking fee. A separate answer on the same page describes Thorne's 60-Day Satisfaction Guarantee. If you bought from an authorized reseller, you return the product there for your money back, a store credit or a replacement. If you bought from Thorne's website or a US authorized seller and can't reach a satisfactory resolution with the seller, you can call Customer Service. You can ask for a refund or a product credit. Guarantee requests must be made within 60 days of the date of purchase. Thorne generally doesn't refund or exchange product past its expiration date. Customer Service is at 800-228-1966 and support@thorne.com. The page doesn't say who pays return shipping. For an opened product that a doctor won't take back, it asks you to call Customer Service and says Thorne will do its best to accommodate you. | For nordic.com orders, you have 30 days from receipt to request a return. You do that by getting a Return Authorization Number (RA#) from customer service by email or phone. For full credit, the return must arrive within 30 days of the RA# being issued. Nordic credits only products that are unmarked, resalable and in their original packaging. Defective products can be returned for a refund after a call to customer service. Nordic doesn't offer exchanges. The page doesn't say who pays return shipping or whether opened bottles qualify. The satisfaction guarantee is separate. It lets the original end-user purchaser ask for a refund or replacement within 60 days of purchase, with proof of purchase and a photo of the product. It covers products bought from nordic.com or an authorized seller in the U.S. Nordic may require you to mail the product back for inspection, and you may have to pay the mailing cost. Purchases from unauthorized sellers, or from authorized sellers in other countries, are excluded. The guarantee page doesn't say whether opened U.S. purchases qualify. |
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These comparisons use published specifications, not head-to-head tests. Prices and terms are dated. Unknown costs are not zero. Check the exact variant before you buy.