Switching from Diazepam to Clonazepam

Key Pharmacological Differences

• Clonazepam has an elimination half-life of 30-40 hours, while diazepam and its active metabolites can persist much longer, resulting in more consistent blood levels but also increased risk of accumulation and daytime sedation 1
• The standard equivalency is 0.5 mg clonazepam ≈ 10 mg diazepam, as recommended by the American College of Emergency Physicians 2, 3

Expected Side Effects During Transition

• Morning sedation and early morning motor incoordination are more pronounced with clonazepam than with diazepam, and confusion and memory dysfunction are also common side effects 1
• Clonazepam at doses of 0.5-1.0 mg can worsen sleep apnea, and its use should be cautious in patients with compromised respiratory function 1

Recommended Switching Protocol

• The American Academy of Sleep Medicine recommends calculating the equivalent dose, reducing it by 25-50% initially, and gradually decreasing diazepam while increasing clonazepam over 2-4 weeks 2, 3, 4
• The optimal daily dose of clonazepam typically ranges from 0.5-2.0 mg for most conditions, as suggested by the American Academy of Sleep Medicine 5

Special Populations and Contraindications

• The American Geriatrics Society lists clonazepam as potentially inappropriate in older adults due to the higher risk of falls, confusion, and cognitive impairment, and recommends starting at lower doses (0.25 mg) 1, 5, 6