Drugs of abuse. Wow. I'm not so familiar with that, but i have some family members who are. I have two cousins drug addicts. I I have never had experience with this type of drugs but I do know the effects that these they bring. For example Cannabis : The effects will vary according to the kind (cannabis sativa, cannabis indica) and ratio of cannabis ingredients within the plant species. Their abuse may range from memory lapses, silliness, loss of motivation, paranoid thoughts, light-headedness to low hormone production. Hallucinogens, largely obtained from cacti and fungi, impair depth perception, cause hallucinations, panic attacks, paranoia... Inhalants , such as household chemicals, eg, neoprene, are not intended for human consumption and cause light-headedness, giggling, loss of motor control... Cocaine causes a short-lived, intense high that is immediately followed by the opposite—intense depression, edginess and a craving for more of the drug. Long-term effectt