When the skin is exposed to UV-B light, cholesterol in the skin is transformed into vitamin D3. In general the skin does not need much UV-B energy to generate vitamin D3, and 15 minutes of strong sunshine every day is usually considered enough.
Best Answer: These are all types of drugs in one form or another. Hallucinogen is an umbrella term, meaning this includes both stimulants and depressants but mainly depressants.A hallucinogen is a drug that causes hallucinations. Examples include LSD and different types of mushrooms.llegal stimulants include meth(amphetamine)s, cocaine, crack, ecstasy. A depressant is a drug that overrelaxes your body, you are less aware and more susceptible to others' influence. Your heart rate and BP slow down, and you can lack coordination.
From LSD to PCP to Ketamine, hallucinogens are widely used and abused drugs that produce profound disturbances in the user's perception of reality. There are naturally occurring hallucinogens as well, including peyote and psilocybin, better known as magic mushrooms.t is the drug most commonly identified with the term hallucinogen and the most widely used in this class of drugs. It is considered the typical hallucinogen, and the characteristics of its action and effects apply to other hallucinogens.