Mixing Advil PM and Methamphetamine (meth)
Caution
Carries risk that is worth understanding before combining. Reduce doses and do not use alone.
Can you take Advil PM with Methamphetamine?
Advil PM contains ibuprofen and diphenhydramine. The most concerning part is Advil PM (Diphenhydramine) with Methamphetamine: amphetamines can hide how confused diphenhydramine is making you, and together they strain the heart. Keep diphenhydramine to ordinary medical doses. MixSafe rates Advil PM with Methamphetamine as "Caution" — carries risk that is worth understanding before combining. Reduce doses and do not use alone. Sources: the Drug Facts labels on DailyMed, the TripSit combination chart and MixSafe research. Educational information, not medical advice.
What is in it
- Advil PM
- Ibuprofen + Diphenhydramine.
Ingredient by ingredient
Advil PM (Diphenhydramine) + MethamphetamineCaution
Amphetamines can hide how confused diphenhydramine is making you, and together they strain the heart. Keep diphenhydramine to ordinary medical doses.
Amphetamines as a stimulant may mask some of the negative side effects of DPH, leading to delusions of sobriety which has additional concern in states of delirium. The combination of stimulants will increase strain on the heart and may cause some physical discomfort, and has the chance to cause life-threatening cardiovascular issues. The combination may also increase each other's neurotoxicity at higher dosages. The combination may increase anxiety levels and risks of thought loops on higher dosages, in addition to increasing each others negative side effects. Medical and common dosages of each substances are reported to not be a concern. Additionally, it is suggested that DPH potentiates amphetamine psychomotor activation, in addition to other interactions such as potentiation through inhibition of CYP2D6 and histamine H1 and H2 receptors, among other alterations.
Class-level answer, inherited from Amphetamines. Nothing specific to this exact pair is documented, so treat it as the default for the class rather than a measurement of this drug.
Source: TripSit drug combination chart
Advil PM (Ibuprofen) + MethamphetamineLow risk, no synergy
Neither substance is expected to meaningfully change the other. Both still carry their own individual risks.
No specific interaction is documented. Ibuprofen's standing risks — stomach bleeding and reduced kidney blood flow — apply in any combination, and matter most when dehydrated, not eating, or dosing repeatedly over a long session.
Sources: Ibuprofen and Alcohol: Is it Safe to Mix NSAIDs and Alcohol? · Mixing NSAIDs with alcohol. GoodRx · Ibuprofen interactions to avoid. SingleCare
- Advil PM, Drug Facts label. DailyMed. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=658fc201-47c9-6a6d-8af9-6208298d43b4
Ingredient lists checked 2026-09-27. Formulas change and store brands differ, so the Drug Facts box on your own packet is the final word.
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