Natural Factors Zinc Citrate 50 mg offers zinc in the well-absorbed citrate form, which is generally favored by nutritionists for good bioavailability and tolerability. The 50mg dosage provides potent support, making it highly effective for individuals with confirmed zinc deficiency or for short-term, intensive immune boosting, as indicated by its high review count. However, this dosage exceeds the tolerable upper intake level for daily long-term use and carries a significant risk of inducing copper deficiency if used without professional oversight. While its price point is competitive for a 50mg dose, its potency means it is not ideal for casual daily supplementation.