Bests & Worsts Reviews from Amazon

I started taking these Vitamin D capsules in June 2018 under the care of my doctor for vitamin d deficiency. At first, I took them once a day, but after 3 months my doctor rechecked my bloodwork, and I'd had no improvement. She had me switch to twice a day. After another six months, I not only saw no progress, my vitamin d levels had actually gotten worse, and I was now severely deficient! My doctor was perplexed. We consulted with an endocrinologist thinking something must be wrong with how my body absorbs/ uses vitamins. They found nothing wrong with me. We switched to another brand (Sports Research... also vegan), and in only 3 weeks, my bloodwork shot up to healthy levels! Now we know that the problem is the efficacy of these vitamins. It's horrible that I had to go through nearly a year of feeling miserable and going through multiple doctor's appointments and unnecessary tests because of the poor quality of this product.