The THC levels in Dutch weed are normally higher than what you are used to. Dutch Nederweed contains about 15-18% THC, while foreign weed only contains about 7.5% THC. The THC level in hash is about 19%. So, ask for advice from the coffee shop about the type, strength and effect of the drugs. If you don’t know how strong it is, take a small puff from the joint and wait for 1-2 minutes to see the effect. Inhaling deeply is not needed for the THC to enter your lungs. The effects will last 2-4 hours.
The use of any hard drugs such as cocaine, LSD, heroin, morphine or MDMA is strictly forbidden in all Amsterdam coffee shops. Usage will get you thrown out, probably banned and possibly prosecuted. Similarly, magic mushrooms (over 200 varieties of hallucinogenic mushrooms), and qat (khat, mira) are banned in coffee shops.
A general rule of thumb is: the more expensive, the stronger the weed. For inexperienced smokers a gram of weed will get you high about 6 times and you should be able to make at least 3 joints nice from a single gram. Ask for advice if you are not sure, these people are here to make sure everything is safe.
The only place to safely buy marijuana or cannabis in the city is via one of the many Amsterdam coffee shops. You will find about 200 coffee shops in Amsterdam, so there is always one close to you.
Eco drugs (with the exception of mushrooms) are still allowed. Valerian, Fly Amanita, Ginseng, Jimson weed, and Guarana can still be sold in so called smart shops selling alternative health products. Any combination of drugs and alcohol will increase the chance of a headache, but also of a bad trip, panic and anxiety attacks, intense unpredictable trips and are generally a bad idea. Drugs affect your ability to drive and perform sexually. Drinking plenty of water or isotone drinks will keep your fluid balance at the right level, allowing your kidneys to remove all toxins. After a good night out eating protein rich food (meat, fish, bananas, and nuts) will help you recover more quickly). Drinking coffee will remove more liquid from your body, increasing the chance of headaches. Fruit and veggies with lots of vitamins can also help you recover more quickly.
Public smoking of tobacco is not allowed anymore in Amsterdam, you are only allowed to smoke cigarettes in designated areas (bars and discos generally have a sealed smoking area, and you are only allowed to smoke near a smoking pole on the train station). Joints without tobacco can be enjoyed in the coffee shops.
If you eat hash or weed (in a space cake /pot brownies for instance) it might take up to two hours to show any effect, do not take a second piece! The effects last 4-6 hours and the after effects up to 12 hours.
Another useful tip is that Amsterdam coffee shops tend to get less expensive the further you go from the city centre. In particular, Red Light District coffee shops tend to be more expensive than those in other parts of the city.
Although coffee shops are not allowed to advertise, you will be able to identify them easily. Official Dutch coffee shops have a green and white licence sticker in the window. In order to enter a coffee shop, you must be 18 or over and have an ID. Coffee shops are not allowed to sell alcohol.
The only place to safely buy marijuana or cannabis in the city is via one of the many Amsterdam coffee shops. You will find about 200 coffee shops in Amsterdam, so there is always one close to