yes it happens because you build a tolerance.
In the UK, heroin is a class A drug.
It depends on the drug you are abusing. Marijuana has no affect whereas a drug like heroin affects it negatively.
Heroin is an opiate.
Heroin effects you faster when injecting because as soon as the heroin hits your bloodstream, it rushes throughout your entire body and vessels. This is often called a heroin "rush" and is usually why people repeatedly inject the drug.
No, Methadone will not hide heroin on a drug test.
Heroin is a narcotic drug, not a demon.
Either heroin, or cocaine.
Heroin
heroin is a semi-synthetic drug, ive just done about it in my drugs and toxicology module at uni
No. Heroin is an opiate whereas amphetamine is a stimulant. These substance have very different effects and chemical structures.
Yes
DRUGS.