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My doctor told me I had a deficiency in Vitamin D. She prescribed 50,000 units per month. While that dosage would be covered by insurance, I didn't want to bother getting authorization and I like the idea of the 5,000 units per day. I have been satisfied with the quality, no other ingredients are in it and I feel it is superior to others I've tried.
Verified purchase: Yes | Condition: New
I especially use Doctor's Best, Best Vitamin D3 5000iu along with Vitamin C after workouts to level out Cortisol levels in my body. Cortisol is your muscles nemesis like a chainsaw ripping through your muscles. I get great absorption and results with Best Vitamin D3!
Verified purchase: Yes | Condition: New
I love the size of this vitamin the best product o ever bought very happy with the product, Thank you
Verified purchase: Yes | Condition: New
I can tell that this product increased my vitamin D levels because I had a blood test that proved it. Thanks for the product. I recommend it. I will purchase it again.
Verified purchase: Yes | Condition: New
I've been using this product for years. It doesn't have undesirable preservatives, easy to swallow capsules, very effective, and is reasonably priced.
Verified purchase: Yes | Condition: New
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