Mephedrone: meow-meow, m-cat, plant food, bubble, meph.
Ecstasy: MDMA, pills, E, eckies

Amphetamine: speed, billy, whizz.

Cocaine: Powder cocaine, coke, blow, Charlie, crack. 

Heroin: white, white girl/boy, mud, dragon, dope, brown sugar, snowball, #3, #4, #8.  

 

Cocaine: increases energy, makes you feel happy, awake, confident and less inhibited
Mephedrone: can induce feelings of happiness, euphoria and confidence, but can also cause anxiety and paranoia
Ecstasy: can make you feel alert, warm, chatty, can make sounds and colors seem more intense
Amphetamine: can make you feel alert, confident and energetic
Heroin:feeling a surge of pleasurable sensation—a "rush." 

Ecstasy: impaired judgement, false sense of attention,confusion, depression, severe anxiety, sleep problems, drug cravings,Paranoia, muscle tension, and blurred vision.  

Amphetamine: Headache, Hostility, Nausea, Cognitive impairment, Severe anxiety, Lack of appetite, Teeth grinding, Dizziness, Increased heart rate, Heart palpitations.Rapid breathing rate, Hypertension (high blood pressure), Increased body temperature, Erectile dysfunction, Irregular heartbeat.

Heroin: repeated heroin use often results in heroin use disorder—a chronic relapsing disease that goes beyond physical dependence and is characterized by uncontrollable drug-seeking, no matter the consequences. Heroin is extremely addictive no matter how it is administered, although routes of administration that allow it to reach the brain the fastest (i.e., injection and smoking) increase the risk of developing heroin use disorder