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- The proper way to use
- Precautions to keep in mind
- Common known side effects
Common known side effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor as soon as possible if any of the following side effects occur:
Rare
- Confusion (more common in the elderly or with high doses)- eye pain- skin rashSymptoms of overdose
- 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 skinSome side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
More common
- 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 vomitingLess common or rare
- 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)After you stop using this medicine, it may still produce some side effects that need attention. During this period of time, check with your doctor immediately if you notice the following side effects:
- 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 bodyOther side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
- The proper way to use
- Precautions to keep in mind
- Common known side effects
