memories you have to up the dose, ur a bigger person... at about your weight, to get a real trip and feel something take about or at least 375mg
If you dont feel ANYTHING with that dose, then ur DXM immune! lol
SneakerPimp Reviewed by SneakerPimp on . DXM advice So I want to try DXM for the first time. I've been reading up on it a lot so I know what to expect and how much to take but since I'm a very cautious person I'm here to double check. I bought a bottle of Robitussin Honey Cough. The only active ingredient is Dextromethorphan HBr, USP 10 mg. The whole bottle will be 236 mg of DXM and i think that's a good amount to start. I've been told 300 but I'd rather do a little less. I think I'm good to go but can anyone else tell me something I Rating: 5