Isotretinoin otherwise known as Accutane is essentially just vitamin A. It works to reduce the oil that is released from the glands in your skin and can actually help you to renew your skin cells much more quickly. Accutane is used regularly to treat nodular acne. It's usually the last chance medication that's used after other treatments have failed. Isotretinoin can also work at treating other skin diseases especially when prescribed by a doctor Accutane isn't regularly used on women who are fertile unless other treatments for acne have failed. This is not a medication that you can take during pregnancy because it's been shown to cause a number of issues with fertility as well as a greater potential for birth defects. The dosage is prepared based off of your body weight. The dose for Accutane is usually measured by .5 to 1 mg per every kilogram of body weight divided into two doses each day.