Dietary supplements may not be risk-free under certain circumstances such as being pregnant, nursing a baby,  having a chronic medical condition, such as, diabetes, hypertension or heart disease. So  be sure to consult your doctor or pharmacist before purchasing or taking any supplement.

While vitamin and mineral supplements are widely used and generally considered safe for children, do check with your doctor or pharmacist before giving these or any other dietary supplements to your child. If you plan to use a dietary supplement in place of drugs or in combination with any drug,  inform your health care provider first.

Many supplements contain active ingredients that have strong biological effects and their safety is not always assured in all users.