The effects of hallucinogens are widely unpredictable depending on the potency, dose, the user s mood, surroundings, and personality. The first effects may be felt within 30-90 minutes, and last 12 hours depending on the type and amount of drug taken. Individuals under the influence may have dilated pupils, increased heart rate and blood pressure, incoherent speech, sweating, loss of appetite, sleeplessness, dry mouth, and tremors. Users that combine drugs or overdose can go into convulsions, coma, or experience heart and lung failure. They may even die.
Hallucinogens have a profound effect on the mind by altering sensations and emotions.
Users may feel several different emotions at once or experience dramatic mood swings. These drugs can cause sensory disturbances, such as delusions and hallucinations. Users may even experience flashbacks up to a year thereafter, where they feel the drug s effects without taking more of the drug. A bad trip indicates a bad psychological reaction to psychedelic drug, and it is relatively common. Occasionally, these feelings and emotions can cause unpredictable, violent or suicidal behavior leading to serious injury or death.