The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.
Common Side Effects
- Dry mouth
- Dizziness
- Blurred vision
- Constipation
- Sweating less
- Difficulty passing urine
- Fast heartbeat
Less Common Side Effects
- Headache
- Nervousness
- Bloating
- Nausea
- Vomiting
- Muscle pain
- Weakness
- Loss of taste
- Trouble sleeping
- Eye problems
Donnatal serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Serious allergic reaction: swelling of eyelids, cheeks, or lips
- Serious skin reaction: rash, severe skin redness, peeling of the skin, painful blisters, fever, confusion
Source: DailyMed
The following Donnatal side effects have also been reported
Side effects that you should report to your care team as soon as possible:
- Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat
- Bowel blockage—stomach cramping, unable to have a bowel movement or pass gas, loss of appetite, vomiting
- Fever that does not go away, decreased sweating
- Trouble passing urine
Side effects that usually do not require medical attention (report to your care team if they continue or are bothersome):
- Blurry vision
- Confusion
- Constipation
- Dizziness
- Drowsiness
- Dry mouth
- Headache

