Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using Unisom Sleep Gels and call your doctor at once if you have:
severe drowsiness; or
painful or difficult urination.
Side effects such as dry mouth, constipation, and confusion may be more likely in older adults.
Common side effects may include:
drowsiness;
dry eyes, blurred vision;
dry mouth, nose, or throat;
decreased urination;
constipation;
feeling restless or excited (especially in children); or
day-time drowsiness or "hangover" feeling after night-time use.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Unisom SleepGels side effects (more detail)
