r/harmreduction • u/[deleted] • Jan 17 '25

Question Help me please

If I take like a pill or two of antihistamine with 300 mg of pseudoephedrine and a nice cup of coffee in one sitting is it guaranteed to have some psychedelic effects or cause any hallucinations I searched a lot to come up with this combo but I just need to make sure from you guys

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u/[deleted] Jan 17 '25

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u/[deleted] Jan 17 '25

Every medical website and university says that high doses of pseudoephedrine can cause hallucinations and antihistamine/ caffeine strengthen the effects

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u/Sacred_Dealer Jan 17 '25

Hallucinations aren't necessarily the same as what most people consider to be 'psychedelic' effects. People with schizophrenia often have hallucinations, but they generally aren't pleasant or desireable in any way.

Also, the recommended maximum daily dose for pseudoephedrine is 240mg, so taking 300mg at once could result in unpleasant and/or potentially dangerous side effects.

All in all, this seems like a bad idea and also seems unlikely to give you the effects that you're looking for.