Can you take promethazine while your on crystal meth?

you can. 150mg generic brand effexor + .2g of crystal had my heart beating pretty hard, however, breathing techniques and just taking a few minutes to chill out will settles the heart rate. the risk of heart attack is there, and all other risks associated with meth still apply naturally ;) when taking effexor some drugs will not affect you and some will affect you more. erowid.org is a very good website for information on recreational use of all drugs. if anyone answers "no" in all caps you know they dont know anything....