Taking zinc everyday can have a wide range of side effects. Some people may experience mild stomach upset or nausea, while others may develop an allergic reaction with skin rashes and itching. High doses of zinc can also cause copper deficiency, which can lead to anaemia and other deficiencies in the body. Zinc has been known to interact with certain medications, such as antibiotics and diuretics, so it is important to check with your doctor before taking zinc supplements if you are taking any prescription medications. Additionally, long-term use of high doses of zinc has been linked to lower levels of HDL (good) cholesterol and higher levels of LDL (bad) cholesterol in the blood. It is important to talk with a medical professional about any potential side effects associated with taking zinc regularly before beginning supplementation.