Tretinoin - Renova and Retin-A are among the most widely known topical retinoids. In addition to alleviating acne by reducing sebum production, tretinoin has also demonstrated some success in improving the appearance of stretch marks by increasing the production of collagen in the skin. Since retinoids are known to cause birth defects, women who are pregnant should not use these ingredients and birth control must be used while on this medication.

Oral medications

Isotretinoin - Widely referred to by the brand name Accutane, this oral retinoid is reserved for patients who have severe cases of cystic acne that remain unaffected by other kinds of medication. Like topical tretinoin, this drug has been shown to cause birth defects and doctors require women to take oral contraceptives while taking this medication.

Tetracycline - While tetracycline antibiotics have a wide variety of uses, they are mainly used to treat acne and rosacea due to their ability to reduce inflammation. Tetracycline can cause discoloration of teeth and women who are pregnant or breastfeeding should avoid this course since tetracycline can affect the skeletal development of children.

Oral Contraceptives - Since overproduction of sebum is one of the root causes of acne, women have the added option of decreasing acne by regulating hormones. While most oral contraceptives are safe for long-term use, you should speak to a gynecologist as well as a dermatologist about the best options for decreasing acne.