Oratane capsules contain a medication known as isotretinoin. Isotretinoin is indicated for acne treatment. It is a similar substance to Vitamin A, but the action of isotretinoin is very different.
Oratane works by reducing the amount of oily substances produced by the oil making glands in the skin. This reduces the amount of bacteria in the skin. These bacteria are the cause of the 'pus' and inflammation found with acne. Oratane may help reduce the inflammation of the skin.