
Tetracycline is an antibiotic discovered as a natural product in 1945. It is a broad-spectrum antibiotic[verification needed] because it works against a range of bacteria. It is made to treat a number of bacterial infections. It is commonly used to treat acne and rosacea[verification needed]. It is a protein synthesis inhibitor[verification needed].
It is produced naturally by the Streptomyces genus of Actinobacteria. In 1950, Harvard University professor Robert Burns Woodward worked out the chemical structure of the related oxytetracycline (Terramycin). Historically it was important in reducing the number of deaths from cholera[verification needed].
Tetracycline was patented in 1953 and was approved for prescription use in 1954. It is on the World Health Organization's List of Essential Medicines. Tetracycline is available as a generic medication. Tetracycline was originally made from bacteria of the genus Streptomyces.