Drugs
The Netherlands are renowned for their liberal drug policy. While technically still illegal, mostly to comply to international treaties, personal use of (soft) drugs are regulated by the Ministry of Justice under an official policy of gedogen; literally this means to accept or tolerate, legally it is a doctrine of non-prosecution on the basis that action taken would be so highly irregular as to constitute selective prosecution.
Note that this doesn't mean the Dutch are all permanently high though! In fact drug usage is much lower in the Netherlands than it is in countries with more restrictive policies. A large part of the clientèle of the coffeeshops (see below) is in fact tourists. Be sure you are among like-minded people before lighting up a spliff.
You are allowed to buy and smoke small doses (under 5 grams) of cannabis or hash. You must be 18 or older to buy. For this you have to visit a coffeeshop, which are are abundant in most larger towns. Coffeeshops are not allowed to sell alcohol. Minors (under 18) are not allowed inside. Coffeeshops are prohibited from explicit advertising, so many use the Rastafari red-yellow-green colors to hint at the products available inside, while others are more discreet and sometimes almost hidden away from plain view. In the border province of Limburg, it will only be possible to buy cannabis products in a coffeeshop if you've got a wietpas ("weed pass") from 2010. This measure will be introduced in an effort to combat drug related crime and nuisance.
Beware that cannabis sold in the Netherlands is generally much stronger than varieties outside, so be careful when you take your first spliff. Be particularly wary of cannabis-laced pastries ("space cakes") as it's easy to eat too much by accident — although there are also unscrupulous shops that sell space cakes with no weed at all. Wait at least one hour after eating!
Hallucinogenic ("magic") mushrooms, once legal, are banned as of December 1st, 2008.
It is forbidden to drive any motorized vehicle while impaired, which includes driving under the influence of both illegal and legal recreational or prescribed drugs (such as cocaine, ecstasy, cannabis and mushrooms) as well as alcohol, and medication that might affect your ability to drive.
Buying soft drugs from dealers in the streets is always illegal and is commonly discouraged. The purchase of other (hard) drugs, eg. ecstasy, cocaine, or processed/dried mushrooms, is still dealt with by the law. However, often people who are caught in possession of small amounts of illegal drugs for personal use are not prosecuted.
The act of consuming any form of drugs is legal, even if possession is not. If you are seen taking drugs, you may theoretically be arrested for possession, but not for use. This has one important effect; do not hesitate to seek medical help if you are suffering from bad effects of drug use, and inform emergency services as soon as possible of the specific (illegal) drugs you have taken. Medical services are unconcerned with where you got the drugs, they will not contact the police, their sole intention is to take care of you in the best way possible.
At some parties, a "drug testing desk" is offered, where you can have your (synthetic) drugs tested. This is mainly because many pills contain harmful chemicals in addition to the claimed ingredients; for example, many pills of "ecstasy" (MDMA) will also contain speed (amphetamines). Some pills don't even contain any MDMA at all. The testing desks are not meant to encourage drug use, since venue owners face stiff fines for allowing drugs in their venues, but they are tolerated or 'gedoogd' since they mitigate the public health risks. Note: the desk won't return the drugs tested.
Please note that there are significant risks associated with drug use, even in The Netherlands' liberal climate while marijuana bought at coffeeshops is unlikely to be hazardous, hard drugs like cocaine and heroin and synthetic drugs like ecstasy are still illegal and unregulated. These hard drugs are likely to be in some way contaminated, especially when bought from street dealers.
some countries have legislation in place that make it illegal to plan a trip for the purpose of commiting illegal acts in another jurisdiction, so you might be apprehended in your home country after having legally smoked pot in The Netherlands.
Source: wikitravel.org
