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Drug interactions

Flurazepam + Methamphetamine

Severity: Minor

Flurazepam 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

Flurazepam is a long-acting sedative benzodiazepine, whereas methamphetamine is a stimulant. The stimulant may mask the sedation and impairment caused by flurazepam, and each drug may reduce the intended effect of the other.

What this interaction means in plain words

Flurazepam 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.

Evidence level: Low

Why it happens

Opposing CNS pharmacodynamic effects; no established pharmacokinetic interaction.

What to do

Advise against driving or hazardous tasks because residual flurazepam impairment may be hidden. Reassess the need for the hypnotic if stimulant use is causing the insomnia.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Flurazepam with Methamphetamine?

MediHelp rates the interaction as minor. Flurazepam 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. Flurazepam is a long-acting sedative benzodiazepine, whereas methamphetamine is a stimulant. The stimulant may mask the sedation and impairment caused by flurazepam, and each drug may reduce the intended effect of the other.

How serious is the interaction between Flurazepam 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: Advise against driving or hazardous tasks because residual flurazepam impairment may be hidden. Reassess the need for the hypnotic if stimulant use is causing the insomnia.

What other medicines interact with Methamphetamine?

MediHelp also lists interactions of Methamphetamine with, for example, Isocarboxazid, Linezolid, Phenelzine. The full list is on the Methamphetamine page.

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