Most common side effects are:
Clumsiness or unsteadiness; constipation; cough; dizziness; drowsiness; dry mouth; headache; increased saliva production; lightheadedness; loss of appetite; muscle aches; nervousness; runny nose; tiredness.
Severe side effects occur when using Klonopin:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); behavior changes; blurred vision or other vision changes; change in the amount of urine produced; confusion; dark urine; fever, chills, or sore throat; hallucinations; hostility; irregular heartbeat; memory loss or problems; mental or mood changes (eg, agitation, aggression, anxiety; depression, hostility, irritability); new or worsening seizures; painful menstrual periods; painful urination; severe drowsiness; severe or persistent tiredness or weakness; shortness of breath; slow or shallow breathing; slurred speech or other speech problems; suicidal thoughts or actions; tremor; unusual bruising or bleeding; yellowing of the skin or eyes.
Since the common side effect is loss of appetite, it would not lead to weight gain.
Yes, absolutely. It increases appetite. It also seems to slow metabolism. I have been on it for sleep seizures several years. It works well, but I have gained 35 pounds and am now overweight. Tests show thyroid levels are fine. I teach dance and am otherwise in good shape. There is no junk food in my diet but I am hungrier more often and it takes more food for me to feel full.
- Klonopin Information for Consumers
- Klonopin Information for Healthcare Professionals (includes dosage details)
- Side Effects of Klonopin (detailed)
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