North Wales Police and the Betsi Cadwaladr University Health Board are warning people not to take recreational drugs known as Pink Love Tablets.
The safety alert comes after two young people from the Anglesey area became ill and required hospital treatement after taking the heart-shaped pink pills.
A similar warning was given last week about the dangers of taking tablets known as “Green Apples” following the death of a local young man.
Dr Linda Dykes FCEM, Consultant in Emergency Medicine, Ysbyty Gwynedd said: "Over recent weeks we have seen a number of people brought into hospital as emergency cases after taking recreational drugs, some of whom have suffered very severe reactions requiring admission to intensive care and one patient has sadly died.
"There are significant risks with any drug misuse, especially when it involves drugs bought off the streets or from unregulated sources. Users will never actually know what they are taking, its strength or whether or not it is contaminated: every time you take a street drug, you are trusting your health, or indeed your life, to chance."
Acting Chief Inspector Simon Barrasford said: "We continue to work with our partners to highlight the dangers of drug abuse and a pro-active team actively targets people involved in the illegal supply of drugs. Both the pink heart shaped Pink Love and Green Apple tablets are being used by party goers and I want to make it very clear that the consequences of taking these tablets can be fatal”
“If you have been given or have bought these drugs please do not take them, I ask that you hand them into the Police so that they can be destroyed properly and safely. I am also asking parents with teenage children to be extra vigilant and to sit down with their sons and daughters and talk through the dangers of taking these drugs You can also call in confidence with any information regarding drug dealing and I assure you this information provided will be dealt with confidentially.”
If you have any information about those who use or supply Pink Love or Green Apple tablets or any other controlled drug contact North Wales Police.