Tretizen 20 mg Capsules (Isotretinoin) – Product Information Isotretinoin Capsules (Tretizen 20mg), is a powerful and potent acne control medication in Spain, used to treat severe recalcitrant nodular acne that are resistant to therapy, particularly cystic acne and acne conglobata, especially when lesions affect the trunk. Nodules are inflammatory lesions that are 5 mm or larger in diameter. 'Severe', by definition, means 'many' as opposed to 'few or several' nodules. A single treatment with Tretizen 20 mg for 15 to 20 weeks has been shown to produce a prolonged and complete remission of the disease in many patients. If a second treatment is required, it should not be started until at least 8 weeks after completion of the first course of medication. Tretizen 20 mg Capsules (isotretinoin) manufactured by Zen Lab are available in the concentrations of 5 mg, 10 mg and 20 mg. Drug name and manufacturer We supply original Tretizen 20mg capsules manufactured by Zen Lab Ltd. Active ingredient present in Tretizen 20 mg Capsules The active ingredient present in Tretizen 20 mg capsules is Isotretinoin. Each soft gelatin capsule contains 5 mg of the active ingredient Isotretinoin. How does isotretinoin (tretizen 20 mg capsules) work? Isotretinoin (Tretizen 20 mg Capsules) works by reducing the amount of oily substances (sebum) made by the glands in your skin. Tretizen 20 mg capsules (isotretinoin) will also help reduce bacteria, inflammation and open clogged pores. Uses of isotretinoin (Tretizen 20 mg) (Spain) Isotretinoin (Isotretinoin) is used to treat severe nodular acne.It is usually given after other types of acne medications or antibiotics have been tried without successful treatment of symptoms.