Brief Answer: there are different potential side effects Detailed Answer: HI, thanks for using healthcare magic Simvastatin is a member of the statin family of drugs that is used to reduce cholesterol. There are different doses available and the doses would vary from one person to the next depending on how the cholesterol responds to the medication. Some persons need higher doses than others. The initial dose is normally 10 to 20 mg but it can need to be increased up to 80 mg in some persons.The dose in between would be 40 mg. It is taken once a day at night. After it is started at either 10 mg or 20mg, the doctor will recheck the cholesterol in a few months to see if the cholesterol is decreasing or an increase in medication is needed. There are potential side effects but the vast majority of persons use the medication without any problems. Some of the potential side effects are: (1)muscle aches and pains, (2)increase in liver enzymes (this does not necessarily mean that the liver is damaged and the values return to normal when the medication is stopped) (3)constipation, nausea, flatulence (4)headache, dizziness (5)rash You may not experience any symptoms at all. I hope this helps, feel free to ask any other questions

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