Isotretinoin Capsules (Tretiva 40mg), is an extremely powerful and potent acne-controlling medicine, is used to treat severe recalcitrant nodular acne which are resistant to therapy, particularly cystic acne and acne conglobata, especially when the lesions involve the trunk. Nodules are inflammatory lesions which have a diameter of 5 mm or greater. "Severe," by definition, means "many" as opposed to "few or several" nodules.
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