Excellent! I take Vitamin D3 at a dosage of 5000 IU with my spouse. This supplement must be taken consistently, ideally during fatty meals for optimal absorption. My immunity has strengthened significantly since I started this supplement, and my hair has become much healthier. With hypothyroidism, retaining hair can be difficult, so I view this as a positive change. Previously, I used a pharmacy version of vitamin D3 for years, which was a waste of money. I highly recommend this product!
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