Information about Trihexyphenidyl

Trihexyphenidyl Uses

How Trihexyphenidyl works

Trihexyphenidyl is an anticholinergic medication. It works by decreasing the activity of a chemical messenger (acetylcholine) in the brain. This improves muscle control and reduces stiffness in Parkinson's disease. It also improves movement disorder (restlessness, involuntary movements or muscle spasm) caused by certain other medicines.

Common side effects of Trihexyphenidyl

Dryness in mouth, Nausea, Vomiting, Constipation, Blurred vision, Dizziness, Upset stomach, Headache, Difficulty in urination, Nervousness
Written By
Reviewed By
MD (Pharmacology), MBBS
Last updated:
09 Jul 2020 | 06:36 AM (UTC)
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Available Medicine for Trihexyphenidyl

PacitanePfizer Ltd
391 variant(s)
ParkinMicro Labs Ltd
13 to ₹232 variant(s)
BexolIntas Pharmaceuticals Ltd
13 to ₹1353 variant(s)
TremnilShine Pharmaceuticals Ltd
131 variant(s)
HexylentTalent India
131 variant(s)
Tri EXTas Med India Pvt Ltd
151 variant(s)
MovahexyMova Pharmaceutical Pvt Ltd
33 to ₹592 variant(s)
ParkintaArinna Lifescience Pvt Ltd
131 variant(s)
DyskinilCrescent Therapeutics Ltd
141 variant(s)
BarohexyBaroda Pharma Pvt Ltd
71 variant(s)

Expert advice for Trihexyphenidyl

  • Dry mouth may occur as a side effect. Frequent mouth rinses, good oral hygiene, increased water intake and sugarless candy may help.
  • It may cause dry eyes. Avoid wearing contact lenses and inform your doctor if it bothers you.
  • It may cause dizziness and sleepiness. Do not drive or do anything requiring concentration until you know how it affects you.
  • Monitoring of intraocular pressure is required while taking this medicine, as an increase in eye pressure may cause blurry vision.
  • Inform your doctor if you suffer from  glaucoma or if you have trouble passing urine.

Frequently asked questions for Trihexyphenidyl


Q. Is Trihexyphenidyl a narcotic? Can I get high after taking Trihexyphenidyl?

No, Trihexyphenidyl is not a narcotic. However, its hallucinogenic and euphoriant properties may make the people abuse its use.

Q. Does Trihexyphenidyl make you drowsy?

Yes, Trihexyphenidyl may cause drowsiness in some cases. Some people may even experience difficulty in falling asleep. Do not drive or operate heavy machinery when you experience drowsiness or if it causes blurring of vision, dizziness, mild nausea and mental confusion.

Q. What happens if more than the recommended doses of Trihexyphenidyl are taken?

Taking more than the recommended doses of Trihexyphenidyl may cause flushing of the skin, nausea, vomiting, dilated pupils, increased heartbeat, rapid respiration, fever, increase in blood pressure, and dryness of mouth, tongue and skin. A rash may appear on the face or upper trunk. You may also experience restlessness, confusion, hallucinations, paranoid and psychotic reactions, incoordination, delirium (a state of mental confusion and emotional disruption) and occasionally convulsions.

Q. Does Trihexyphenidyl cause weight gain?

Yes, Trihexyphenidyl may cause weight gain. If you are concerned about your weight gain, consult a dietician for diet plan, exercise regularly, and eat a healthy and nutritious diet.


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