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Cogentin / Benztropine Side Effects

Bipolar Medications Library

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Updated June 19, 2006

Cogentin - generic Benztropine - is an antiparkinsonian drug in a class of drugs called antidyskinetics. It is used in the treatment of Parkinson's Disease and to control movement side effects of antipsychotic drugs such as are often prescribed for bipolar disorder. It improves muscle control and decreases the stiffness and tremors. Check with your doctor if any of the following side effects continue or are bothersome:

Blurred vision; constipation; decreased sweating; difficult or painful urination (especially in older men); drowsiness; dryness of mouth, nose, or throat; increased sensitivity of eyes to light; nausea or vomiting

Less Common Cogentin Side Effects:

Check with your doctor if any of the following side effects continue or are bothersome:

Dizziness or lightheadedness when getting up from a lying or sitting position; false sense of well-being (especially in the elderly or with high doses); headache; loss of memory (especially in the elderly); muscle cramps; nervousness; numbness or weakness in hands or feet; soreness of mouth and tongue; stomach upset or pain; unusual excitement (more common with large doses of trihexyphenidyl)

Always Notify Doctor:

Rare: Confusion (more common in the elderly or with high doses); eye pain; skin rash

Cogentin Withdrawal Side Effects - Notify Doctor:

Anxiety; difficulty in speaking or swallowing; dizziness or lightheadedness when getting up from a lying or sitting position; fast heartbeat; loss of balance control; mask-like face; muscle spasms, especially of face, neck, and back; restlessness or desire to keep moving; shuffling walk; stiffness of arms or legs; trembling and shaking of hands and fingers; trouble in sleeping; twisting movements of body

Cogentin Overdose Effects - Notify Doctor:

Clumsiness or unsteadiness; drowsiness (severe); dryness of mouth, nose, or throat (severe); fast heartbeat; hallucinations (seeing, hearing, or feeling things that are not there); mood or mental changes; seizures; shortness of breath or troubled breathing; trouble in sleeping; warmth, dryness, and flushing of skin

Other Cogentin side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.

For further reading:

Medications Side Effects Library
About Bipolar Medications

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