Answer
Mirtazapine's mean elimination half-life is 20–40 hours, although longer half-lives up to 65 hours have occasionally been recorded and shorter half-lives have been seen in young men.
Sources for this answer
- Mirtazapine 15mg TabletsAurobindo Pharma - Milpharm Ltd. · emc · SmPC §5.2 Pharmacokinetic properties · Version 15Document updated
Sources checked