Why is it difficult to pee when you have taken ecstasy (MDMA)?

Ecstasy (MDMA) activates the ADH (antidiuretic hormone) hormone. This hormone normally ensures that you do not urinate all your body fluids. If you use MDMA, this hormone is extra activated. Your kidneys then excrete less water through the urine. In other words, there is less fluid in your bladder to urinate. That is why it is important not to drink too much while under the influence of MDMA. Otherwise, there is a risk of water poisoning. Do not drink more than 1 – 2 glasses of water or soda per hour. Want to know more about water poisoning? We made an animation about this.