Why don't i get high when i smoke crack?

Unbelievable!: Are you looking for medical advice to restore your ability to get stoned using illegal drugs? There is an answer to your question but I am not going to give it to you because you're question suggests you have serious drug addiction issues. You should be asking yourself why you are still abusing a dangerous drug when it admittedly does not give the high you crave.

Crack: If anything, this would affirm that it is time for u to quit this risky habit.

Tolerance: Even with crack, tolerance can develop so that desired effects require higher doses to achieve. Or, your supply is not the substance you think you bought. Either way, you are in serious difficulty with addiction and need help. Cocaine anonymous is a start: http://www.Ca.Org/ work with your physician to get more in-depth personal help based on the amount you've been using & state of health.