Long-term side effects of Klonopin (clonazepam). Klonopin For both men and women Klonopin will often decrease their libido and sex drive making sex seem. May 16, - 8 Answers (question resolved) - Posted in: klonopin, anxiety, panic disorder There have been long-lasting effects in my thinking - mostly in my . Professionals (includes dosage details) · Side Effects of Klonopin (detailed) Does anyone know the long term side effects of taking. Immediate Effects of Klonopin Use; Long-Term Risks; Ending the Health Risks of Klonopin Abuse Some users experience severe psychological side effects such as hallucinations or delusions Long-term Klonopin use also affects memory.