Now Mega D-3 & MK-7 Review

NOW Mega D3 & MK-7 combines vitamins D3 and K2, two nutrients extensively researched for their roles in the health of bones, teeth and the cardiovascular system. Each capsule provides 5,000 IU (125 mcg) of vitamin D as D3 cholecalciferol and 180 mcg of vitamin K2 as menaquinone-7, also called MK-7 and sold under the MenaQ7 name. The product page lists the category as Bone and Cardiovascular Support. Vitamin D3 works with calcium to support bone health, and more recent studies indicate it is important for immune system health as well. MenaQ7 MK-7 is described as a unique soy-free, bioavailable form of vitamin K2 that plays a critical role in arterial health through its ability to support proper calcium metabolism in blood vessels and arteries. Vitamin K2 is also described as important for the formation of strong, healthy bones. The page notes that MenaQ7 is a registered trademark of Lesaffre et Compagnie, France. The suggested usage is to take 1 capsule daily with a fat-containing meal, and to store the product in a cool, dry place after opening. The 30 capsule size is listed with 30 servings. Larger sizes of 60, 90 and 120 capsules are also offered, and the 90 capsule size is marked as In Stores Only. The page tags list Halal, Kosher Triangle K, Intertek GMP Supplement Certification, and Made without dairy, eggs, soy and gluten. The supplement is not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients, though it is produced in a GMP facility that processes other ingredients containing these allergens. The product is made and quality tested in the USA with globally sourced ingredients and is described as family and employee owned. The bottle is made from 100 percent post-consumer recycled resin. The page cites a 2025 Taste for Life Essentials Award Winner and a 2019 Taste for Life Essentials Award Winner. The caution section states that the product is for adults only and that the recommended dose should not be exceeded. People who are pregnant or nursing, taking meds such as meds or heparin, taking topical psoriasis medications or thiazide meds, or who have hypercalcemia, kidney disease or hyperparathyroidism should consult a physician first. Users should discontinue use two weeks prior to surgery and keep the product out of reach of children. The page carries the standard statement that these statements have not been evaluated by the Food and Drug Administration and that the product is not intended to diagnose, treat, cure or prevent any disease.

Product Focus: Bone HealthAlso covers:Heart
Tier ⓘ
Members see this product's tier and why. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
Biohacker Mentions
Cost per month
$15

Study, Trial or Testing Result Summary

MembersHuman studies

Both main ingredients are present at or the doses used in studies. Vitamin K2 has the support. …

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Review Totals and Summary

Members44,540 reviews
44,540 reviews · Iherb 31,502 · Ebay 12,951 · Swanson Vitamins 19 · Walmart 11 · Fruitfulyield 2

This summary reflects customer feedback on Now Mega D-3 & MK-7 capsules, which consistently receive , with available reviews giving 4 or 5 stars out of an approximate total of 85 ratings across various stores. Buyers generally express with this supplement. **What buyers say it did for them** Customers report and from taking these capsules. …

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Biohacker Summary

MembersWhat our biohacker panel says

The product's two ingredients, vitamin D and vitamin K2 (as MK-7), are both listed here as smaller ingredients in this product, yet the panel talks about them a lot. Nearly ten about vitamin D, and or use it, mainly for immune , brain and mood, muscle, bone, and because sun exposure leaves people . …

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RAL Summary

MembersThe tier and why

Its reviews are set aside, so it is graded on its studies alone. Human studies support Vitamin K2 (40 of 72 human studies showed an ), but there are yet reviews to confirm it (0). …

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More Details

MembersBody systems · Combine with · Possible side effects

Body systems: Skeletal system, Cardiovascular system. Combine with and possible side are for members.

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Supplement Facts

Vitamin D 125 mcg (5,000 IU) · Vitamin K-2 180 mcg
Supplement Facts
Serving Size 1 Capsule
Servings Per Container 60
Amount Per Serving% Daily Value
Vitamin D (as D3 Cholecalciferol) (from Lanolin)125 mcg (5,000 IU)625%
Vitamin K-2 (as Menaquinone-7) (MK-7) (MenaQ7®)180 mcg†
† Daily Value not established.

Other ingredients: Microcrystalline cellulose, hypromellose (cellulose capsule), modified starch, maltodextrin and silicon dioxide.

Directions: Take 1 capsule daily with a fat-containing meal.

Label source: Vitacost · Report a label change

Where to Buy

Now · Walmart · Swanson
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Graded October 28, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.