Once-Weekly Vitamin D3 50,000 IU Softgels, 50 Count Bottle, High Potency Vitamin D Supplement, Easy-to-Swallow, Extended Supply

I am very satisfied with ULTRA-D3 50,000 IU. The capsules are small and very easy to take, and I love that I only need one per week. After using it for several weeks, I have noticed a big difference in my energy and overall well-being. I really like that it is a high-potency formula and that it supports the health of bones, teeth, and the immune system. I also appreciate that it is gluten-free and of excellent quality. I definitely recommend it for anyone looking for a practical and effective way to maintain good vitamin D levels. Excellent product and very good value for money!

This product really worked for me! My vitamin D level increased from 18.9 ng/mL (deficient) in January 2026 to 51.6 ng/mL by June 2026 after taking it as prescribed. If your doctor has prescribed a high-dose vitamin D supplement, I would definitely recommend giving this one a try. It was effective for me, and I’m very happy with the results.

Works just as well as the prescription for a few dollar less makes it a good bang for your buck. Size is small and easy to swallow. Definitely helped my vitamin d levels and I can tell when I dont take it.

I’ve been using this brand for a full year now. For the last 5 years I’ve been on prescription vitamin D and changed to this due to the cost being so much lower. I’m happy to share that my vitamin D has maintained the same level using this product in place of the much more expensive prescription. Excellent value and easy to swallow. Highly Recommend

I have ordered this product a few times over the past few years. I do get yearly Vitamin D3 blood test to substantiate that my levels are normal. This product helps me to keep my levels in the normal range. It has really helped to improve my bone density ( in addition to adding calcium & magnesium). It is nice to take one gel cap of this each week rather than having to take a lesser strength dose of another product daily. I recommend that you get at least a yearly blood test from your doctor to make sure you are not at a toxic level for vitamin D while using this product.

Good brand, but I miss the smaller blister pack they used to sell. I don't go through these quick and blister packs are better for storage IMO.

This is the 2nd time I bought these on my Dr's advice. My Vit D level was almost always low, and I wasn't consistent with the daily vitamins. Since using the once weekly, my blood tests have come back with good Vit D levels for the past year.

Improve vitamin D. level.

It seemed all right at first. The first row of capsules was fine. When I started on the second row, as I moved down the weekly dose I found 3 capsules broken and leaking. I threw then away. Not accidental that the last 3 capsules were leaking inside their individual pouch. Disappointed I could not finish the course. Angry over the financial loss. As for any benefits? I have to question if this product is even genuine. All these weeks, I have kept the product safely inside its original container in a cool. Dark place. Guess I will only know if I do the test again.