Crestor (rosuvastatin) has been specially designed to help people lower their level of bad cholesterol in blood therefore preventing hardening of the arteries. This way it's possible to avoid a number of serious diseases, such as heart disease and vascular disease. The following factors may prevent you from safely taking Crestor: pregnancy or breastfeeding, liver disease and a history of an allergic reaction to the active ingredient this medicine contains. Any other health conditions you have or used to have are also supposed to be reported, as they may affect the dose you are prescribed. Such health problems as seizure disorder, kidney disease, underactive thyroid, severe infection, a muscle disorder, and a recent history of a surgery must be reported to your health care provider before starting the treatment. Your blood will need to be tested regularly to make sure you benefit from the treatment and do not develop any side effects. The following mild side effects are sometimes possible: sore throat, diarrhea, dizziness, memory loss, headache, weakness, constipation, mild nausea, runny or stuffy nose, and burning when you urinate. Unless the side effect mentioned change in intensity and begin to bother you too much - you are not supposed to notify your doctor of them. The following ones need to be reported as soon as possible because of being a lot more serious: urinating more or less than usual, loss of appetite, muscle pain, clay-colored stools, dark colored urine, stomach pain, chest pain, low fever, tenderness, and nausea. Do not combine Crestor with such medicines as blood thinners, niacin, ketoconazole, cimetidine, ritonavir, other cholesterol-lowering medications, cyclosporine, lopinavir, or spironolactone, as interactions have been reported that may affect your health and wellbeing. If you are pregnant and plan on taking Crestor - talk to your doctor first. This medicine is FDA pregnancy X. This category is used for drugs known to cause serious birth defects in babies if taken by expecting mothers. Therefore pregnancy is one of contraindications for taking Crestor. To prevent dangerous health effects in your unborn baby you will need to use a reliable method of birth control (it's best to discuss it first with your health care provider). Stop taking Crestor if you got pregnant and consult your doctor immediately to learn about the options you have.