In order to achieve 8 mg or 11 mg of zinc per day, you actually need to consume more than that because your body absorbs approximately 20%-40% of the zinc it digests. It is safe to take zinc supplements with an approximate 40 mg – 50 mg zinc content on a daily basis. Do not exceed that amount unless you have consulted a physician! If you consume 100 mg – 500 mg per day, you will experience serious side effects. The longer you “overdose” on zinc, the worse your side effects will be.