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What is centrum ?
centrum is multivitamin medication which contain many important minerals and vitamins such as vit B,A,C,E, and zinc and coppur and iron and many others , and its uses in many medical conditions such as :
1. anemia
2. unhealthy diet and malabsorbtions situations 
3. pregnancy
4. body immunity system
5. gastric absorbtion diseases
6. maintian healthy body and increase body function
What are centrum side effects ?
1. stomach pain
2. increase heart rate
3. muscle weakness
4. increase urination
5. changes in mouth taste
6. tooth staining 
General advices :
1. stick to your doctor instructions and advises doses 
2. if you have used this medication and severe side effects appeared , reconsult your doctor soon 
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Kind Regards