Key takeaways
Tetracycline and isotretinoin are both prescription medications, but they serve different purposes and belong to different drug classes. Tetracycline is an antibiotic used to treat various bacterial infections, including respiratory tract infections, UTIs, and severe acne. It works by stopping bacteria from growing. Isotretinoin, on the other hand, is a retinoic acid derivative used to treat severe nodular acne that hasn't responded to other treatments. It reduces the amount of oil released by your skin's oil glands. Tetracycline is taken multiple times a day and can cause stomach issues and teeth staining in children, while isotretinoin is taken twice daily for 4 to 5 months and can cause serious birth defects, requiring enrollment in the iPLEDGE program for those who can get pregnant. Additionally, isotretinoin can lead to mood changes and higher pressure in the brain, especially if taken with tetracycline. Both medications can make your skin more sensitive to sunlight, but isotretinoin has a broader range of serious side effects, including liver damage and bone fractures.
