According to PubMed Health, pyrantel, whose generic name is Antiminth, is an anti-worm medication that prevents worms from growing or multiplying inside the body. Pyrantel is used to treat roundworm, hookworm, pinworm and other worm infections. Pyrantel comes as a capsule and liquid. The drug is usually taken as a single dose for the treatment of pinworms and roundworms. For the treatment of hookworm infections, pyrantel is taken once a day for three days. Pyrantel has several side effects.
Gastrointestinal Effects
According to Drugs.com, pyrantel causes several effects on the gastrointestinal system. Patients may experience loss of appetite, upset stomach, nausea, vomiting, diarrhea, abdominal cramping and constipation. Long-term use of pyrantel may cause inflammation of the liver and increased liver enzymes. Signs and symptoms of liver inflammation include itching, yellowing of the eyes and skin, dark urine, clay-colored stool, swelling of the abdomen, right upper abdominal pain and loss of appetite.
Nervous System Effects
Pyrantel may have an effect on the nervous system and lead to dizziness, drowsiness, insomnia and headache, according to Drugs.com. Patients should avoid consuming alcohol together with pyrantel, as the combination can worsen drowsiness and lead to problems in breathing. Patients should also not drive or operate machinery until they become aware of the effects of pyrantel on their bodies.
Hypersensitivity
Patients may develop severe allergic reactions after taking pyrantel. Such patients should avoid taking pyrantel altogether. Drugs.com lists the signs and symptoms of an allergic reaction as rash or hives, itching, chest tightness, closing of the throat, wheezing, unusual hoarseness in the voice, problems breathing and swelling of the face, tongue, eyelids and lips.
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