Cocaine increases your blood pressure and heart rate particularly dangerous if you have a heart condition. Possession and use are illegal and can result in frees and arrest. Ice can cause convulsions, heart irregularities, high blood pressure, depression, restlessness, tremors, severe fatigue. An overdose can cause coma and death. When you stop using ice you may experience a deep depression.
Ice causes a very jittery high, along with anxiety, insomnia, sometimes paranoia.
One use of LSD or PCP can cause multiple and dramatic behavioral changes. Large doses of hallucinogens may cause convulsions, ruptured blood vessels in the brain and irreversible brain damage.