Although it is used legally in medicine as pain killer, however morphine is contraindicated in certain conditions or for people suffering for certain diseases or insufficiency, therefore it is preferable to use morphine only with the doctor’s recommendation. The following conditions are relative contraindications for morphine:
* acute respiratory depression
* renal failure (due to accumulation of [...]

Although they say that LSD is non-toxic and has no known adverse physical after-effects, the LSD users may experience flashbacks to previous trips and these flashbacks may continue for up to 12 months after use. Some other side effects are severe depression and schizophrenia. Due to the fact that it is a powerful mental amplifier, [...]