They were all taken to hospital where staff said their condition was stable but #8220;giving cause for concern#8221;.
#8220;None of those involved are known to each other.#8221;
Police Scotland said one line of inquiry being pursued was whether they had taken a type of MDMA, the drug commonly known as ecstasy.
Whilst there a 16-year-old boy and a 16-year-old girl also became unwell.
Police are investigating if the drug ecstasy is responsible for three people, including two teenagers, becoming ill at a concert in Glasgow.