Minocycline is a semisynthetic tetracycline antibiotic derived from tetracycline Minocycline hydrochloride is an antibiotic used to treat bacterial infections such as Escherichia coli (e. coli), Streptococcus pneumoniae, respiratory tract infections, urinary tract infections (UTIs), and more. Learn about the side effects of minocycline, from common to rare, for consumers and healthcare professionals. Minocycline is a tetracycline antibiotic that fights bacteria in the body. Minocycline is used to treat many different bacterial infections, such as urinary tract infections, respiratory infections, skin infections, severe acne, chlamydia, tick fever, and others. Minocycline is in a class of medications called tetracycline antibiotics. It works to treat infections by preventing the growth and spread of bacteria. It works to treat acne and rosacea by killing the bacteria that infects pores and by lowering the amount of oil on your skin that can cause acne. Overview: Minocycline is used to treat certain bacterial infections, rosacea, and acne. Common side effects include headache, feeling tired, dizziness, itching, and an upset stomach. If you need. Minocycline is an antibiotic sometimes used as an off-label treatment for mild rheumatoid arthritis (RA) since it has mild anti-inflammatory activity. Minocycline belongs to the group of antibiotics called tetracyclines. Learn about minocycline usage and dosing. Read the latest news and reviews about the drug as well as potential side effects and popular alternatives. Minocycline, sold under the brand name Minocin among others, is a tetracycline antibiotic medication used to treat a number of bacterial infections such as some occurring in certain forms of pneumonia. [2][4][7] It is generally (but not always) less preferred than the tetracycline doxycycline. [4][7] Minocycline is also used for the treatment. Minocycline belongs to the class of medicines known as tetracycline antibiotics. It works by killing bacteria or preventing their growth. However, this medicine will not work for colds, flu, or other virus infections. This medicine is available only with your doctor's prescription.