All drugs has side effects. Some drugs makes you sleepy, others - like for example antidepressants - can give you a headache. Other remedies can make your heart beat fast. Why do drugs have side effects?

Our bodies are complex structures, built from chemicals and to function smoothly it has to be regulated. Chemicals like for instance hormones, enzymes and other molecular messengers normally make these adjustments. The purpose of medicines are often to take the place of one of the body