Drug interactions
Lorazepam + Methamphetamine
Severity: Minor
Lorazepam and Methamphetamine: minor interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Methamphetamine is a strong CNS stimulant whose effects oppose lorazepam sedation. Stimulation may mask sedative impairment, and the net effect is unpredictable.
What this interaction means in plain words
Lorazepam and Methamphetamine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Lorazepam belongs to Central Nervous System; Methamphetamine belongs to Central Nervous System.
Why it happens
Opposing pharmacodynamic effects on CNS arousal; no established pharmacokinetic interaction.
What to do
No routine adjustment is needed. Monitor for anxiety, insomnia and cardiovascular effects, and warn about impaired driving despite feeling alert.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Lorazepam and Methamphetamine, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Lorazepam
Other interactions of Methamphetamine
- Isocarboxazid + Methamphetamine Contraindicated
- Linezolid + Methamphetamine Contraindicated
- Methamphetamine + Phenelzine Contraindicated
- Methamphetamine + Procarbazine Contraindicated
- Methamphetamine + Rasagiline Contraindicated
- Methamphetamine + Safinamide Contraindicated
Frequently asked questions
Can I take Lorazepam with Methamphetamine?
MediHelp rates the interaction as minor. Lorazepam and Methamphetamine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Methamphetamine is a strong CNS stimulant whose effects oppose lorazepam sedation. Stimulation may mask sedative impairment, and the net effect is unpredictable.
How serious is the interaction between Lorazepam and Methamphetamine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine adjustment is needed. Monitor for anxiety, insomnia and cardiovascular effects, and warn about impaired driving despite feeling alert.
What other medicines interact with Lorazepam?
MediHelp also lists interactions of Lorazepam with, for example, Alfentanil, Alprazolam, Amobarbital. The full list is on the Lorazepam page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
