Tequin is an antibiotic for adults that is commonly prescribed to treat infections in the lungs, sinus, or urinary tract. In addition, it is also commonly used to combat sexually transmitted diseases that are caused by bacteria. Tequin, like all other antibiotics, is not capable of destroying viruses that infect the lungs and sinuses such as the common cold. While gonorrhea is treated by Tequin, syphillis and many others are not.
Tequin should not be taken by people with a rare heart disease called congenital prolongation of the QTc interval, by people with low blood potassium, by people who are taking medicines to treat an irregular heartbeat, or by people with high blood sugar or diabetes. The following list of potential side effects and risks is not complete. The most common serious side effects of any Tequin treatment include hypo and hyperglycemia; severe allergic reactions including closing of the throat, swelling of the lips, and trouble breathing; and central nervous system side effects including seizures, dizziness, confusion, and tremors. The less severe potential side effects of taking Tequin include nausea, vomiting, stomach pain, diarrhea, dizziness, and headaches.
In May of 2006, the maker of Tequin, Bristol Myers Squibb (BMS), revised the label for Tequin following numerous reports of hyper and hypoglycemia. The new label says that Tequin should not be taken by any person that has diabetes. It also involves changes to the warnings about serious blood sugar problems.