Raise your family's vitamin D levels. Improve everyone's immune health.*

Vitamin D for you, your parents, kids, and anyone else you consider family.

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Guaranteed to raise low vitamin D levels in as few as 14 days*†

The only vitamin D supplement made with calcifediol

3x faster and more effective than traditional supplements

Clinically proven and absorbed directly into the bloodstream

d.velop™ Family Bundle

Customized to keep your whole family healthier

d.velop ImmunityPlus

d.velop Vitamin D

d.velop Kids Vitamin D Gummy

d.velop Test Kit


If you are looking for a way to improve your Vitamin D levels…d.velop is it!

Jacqui O

Why experts go with d.velop

“Vitamin D is a foundational immune system nutrient. It’s important that we assess our supplemental needs as we look to stay healthy year round.”

Registered Dietitian,
Chloe Giraldi, MS, RD, LDN

“More than 9 in 10 people don't get enough vitamin D from food alone. That's why we created the most effective vitamin D available as a supplement.”

Chief Science Officer,
Nate Matusheski PhD

"With so much misinformation out there, especially online, I think it's invaluable that users have access to an RD to help navigate how to improve their immune health in a way that is tailored specifically to them."

Registered Dietitian,
Laura Ward, MS, RDN, LDN, IBCLC

Ask us anything

We recommend that you take d.velop™ on a daily basis, alongside food. You might find taking d.velop at the same time each day helps you get in the habit. Remember, dietary supplements are not intended to replace a healthy diet, but they can help support one!
Clinical studies have shown that ampli-D® can achieve optimal vitamin D status (30ng/mL), on average 3X faster, and is 3X more effective compared to the same mcg dose of traditional vitamin D3.
d.velop™ products are as safe as other vitamin D products for pregnant and lactating women. However, we recommend that you consult with your doctor before using or continuing to use d.velop™ and any other dietary supplement if you are nursing, pregnant, trying to conceive, or taking medication.