Mixing Cocaine (coke) and Diphenhydramine (Benadryl)
Caution
Cocaine hides how sedated you are; if it wears off first, high doses of diphenhydramine can stop your breathing. Both strain the heart. Keep diphenhydramine to ordinary medical doses.
Stimulants increase respiration rate allowing for a higher dose of sedatives than normal. If cocaine wears off first, recreational dosages of DPH may overcome the individual and cause respiratory arrest. Both substances at recreational dosages strain the heart and may lead to further dangerous heart complications. When taken together, both substances can potentially be more reinforcing and have greater risk of methemoglobinemia when higher dosages of DPH are combined with cocaine.
The risk here is to the experience — intensity, panic, thought loops, confusion. Physical harm is unlikely at ordinary doses. Setting, company and dose do most of the work.
Headspace vs physical riskCan you mix Cocaine (coke) and Diphenhydramine (Benadryl)?
MixSafe rates mixing Cocaine and Diphenhydramine as "Caution" — carries risk that is worth understanding before combining. Reduce doses and do not use alone. Source: TripSit drug combination chart, retrieved 2026-08-20. Educational information, not medical advice.
- Cocaine also called
- coke, crack, blow, snow, yayo, yay
- Diphenhydramine also called
- benadryl, dph, sleep aid, zzzquil, unisom, doxylamine
TripSit drug combination chart, retrieved 2026-08-20. View the dataset.
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Rated caution. Educational information only, not medical advice. Absence of a documented interaction is not evidence of safety.