About Unisom

Unisom is used for treating occasional sleeplessness and reducing difficulty falling asleep.


Unisom is used for treating occasional sleeplessness and reducing difficulty falling asleep. Unisom is an antihistamine. It works by depressing the central nervous system (brain) to produce drowsiness.

Store Unisom at room temperature, between 68 and 77 degrees F (20 and 25 degrees C). Store in the original package or container away from heat, moisture, and light. Do not store in the bathroom. Keep Unisom out of the reach of children and away from pets.

Side Effect Unisom: All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most common side effects persist or become bothersome: Dizziness; drowsiness; dry mouth, throat, and nose; thickening of mucus in nose or throat. Seek medical attention right away if any of these severe side effects occur: Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); convulsions; decreased alertness; excitability; fast heartbeat; hallucinations; tightness or pounding in the chest; tremor; wheezing. This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider.