Tavist (clemastine) is an antihistamine that works by blocking histamine actions in the body, thereby reducing the effects of allergic reactions. According to the website Drugs.com, Tavist is used to treat or prevent upper respiratory allergies such as hay fever as well as relieve cold symptoms such as sneezing, runny nose, cough and itching of the eyes, nose and throat.
Minor Side Effects
Minor side effects of Tavist include drowsiness, dizziness and dry nose, throat and mouth as well as thickening of the mucus in the throat or nose. Excitability has also been reported; if any of these side effects become a problem, you should check with your doctor.
Serious Side Effects
Serious side effects of Tavist that have been reported are a pounding or fast heartbeat, hallucinations, tremor, convulsions and wheezing. Contact your physician immediately if you exhibit any of these side effects. According to Medline Plus, difficulty urinating, changes in vision and loss of coordination have also been reported.
Severe Side Effects
Severe side effects that have been attributed to Tavist include severe allergic reactions such as tightness in the chest or breathing problems; swelling in the lips, face, tongue or mouth; difficulty swallowing; and itching, hives or rash on the skin. Contact your doctor immediately if you exhibit any signs of an allergic reaction to Tavist.
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