While there are many illegal drugs much worse than marijuana or alcohol, what many don’t realize is just how many drugs are perfectly legal and obtainable over the counter, that will get you higher than marijuana or are far stronger and more dangerous than the illegal ones.
10. Diphenhydramine (Benadryl)
Diphenhydramine usually goes by the trade name Benadryl; it is marketed to deal mainly with allergies, but is also often used as a sedative when people are having trouble sleeping. It has some popularity among recreational drug users, due to its affect as a deliriant. When recreational users take a high dose, they can expect such symptoms as drowsiness, fatigue, disturbed coordination, dizziness, blurred vision, confusion, and hallucinations, which are somehow considered positive things by recreational users.
The drug is quite dangerous in very high doses, especially if done regularly. There are many, much worse, side effects, such as fever, hypotension, seizures, convulsions, atheotosis, gastrointestinal symptoms, deep coma, and death. If you are just taking one occasionally for its intended use you should be fine, but regular abuse of this drug is very bad for your heart.