Complex sentence: Lovastatin at doses higher than 20 mg per day should not be used in conjunction with gemfibrozil (Lopid) or other fibrates, niacin, or ciclosporin, because of the significantly increased risk of rhabdomyolysis.
Split into simpler sentences: Lovastatin at doses higher than 20 mg per day should not be used in conjunction with gemfibrozil (Lopid) or other fibrates, niacin, or ciclosporin. This is because of the significantly increased risk of rhabdomyolysis.