COMMON side effects persist or become bothersome when using Ambien:
Diarrhea; dizziness; drowsiness (including daytime drowsiness); "drugged" feeling; dry mouth; headache; nausea; nose or throat irritation; sluggishness; stomach upset; weakness.
Seek medical attention right away if any of these SEVERE side effects occur when using Ambien:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the hands, legs, mouth, face, lips, eyes, throat, or tongue; throat closing; unusual hoarseness); abnormal thinking; behavior changes; chest pain; confusion; decreased coordination; difficulty swallowing or breathing; fainting; fast or irregular heartbeat; hallucinations; memory problems (eg, memory loss); mental or mood changes (eg, aggression, agitation, anxiety); new or worsening depression; severe dizziness; shortness of breath; suicidal thoughts or actions; vision changes.