Generic Accutane capsules contain the active ingredient isotretinoin, which is used to treat severe recalcitrant nodular acne. Common side effects include dry skin, lips and mucous membranes, as well as muscle and joint pain. Isotretinoin can also cause serious side effects affecting the brain, lungs, liver and other organs. Precise dosing between 0.5-1 mg/kg daily for 15-20 weeks is required, and the capsules must be taken with food to ensure proper absorption. Isotretinoin is contraindicated during pregnancy due to risk of birth defects.