Hi welcome to HCM I have gone thru your query and can understand your concern . For your info , All drugs have some side effects , so has crestor also , which is a statin family drug , it has , the potential for serious side effects but these drugs cut the risk of heart attack, angina , stroke, and death from cardiovascular disease by 30%. So you can t ignore this fact . Some people are more prone to muscle problems from statins than others. You are in this category if you are , over age of 80, have a small body frame or are frail , have kidney disease . Dear ,Your muscle pains may be outcome of crestor but other factors can t be ruled out Muscle aches are related to stress, tension, and over working outs - physical activity. Sometimes in feverish condition ,you feel muscle pain . Lack of physical activity and imbalanced diet , devoid of essential nutrients is a major factor causing you polonged strain . Gulping on only drugs , and go on using any number of therapies will not help you gain long lasting relief , unless you modify your life style and food habits . I would like suggest you to try to remove the cause and Include Fiberous & calcium-rich foods like yogurt , cheese and greens -a balanced diet containing all essential nutrients - fiber ,vitamins ,minerals fresh fruit , veges and antioxidants - Olives, Aloe vera , ginger , garlic , help alley inflammation & pains . 3.lack of hyderation can also cauše pains , 4 . lack of sleep ,are the few causes which can trouble you . To strengthen your immunity Do Yoga ,Pranayam ,Deep breathing - Inhale as deep as possible - Hold - Exhale -Hold - help to re-expand lungs help detoxing the inner system and boosting the energy by providing sufficient oxygen and strengthen muscles . It s important to make an appointment with your health doctor for a check-up and consultation. Hope this helps solves your query .Take care , All the best . Don t hesitate to get back if have any further query