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.
Drug Class: CNS Stimulant; Hallucinogen. Street Names: Beans; E; Ecstacy; Ecstasy; Rolls; X; XTC. Description: MDMA is classified as both a stimulant and a hallucinogen. When ingested, MDMA produces potent feelings of empathy and well-being beyond that associated with other drugs of abuse.