A teenager who spent two weeks in a coma after taking what is believed to be a powerful form of crystallised MDMA has appeared in an online video that shows her painstaking recovery from a two-week coma.

Amy Thomson, 16, collapsed at a house party in Glasgow in June and remained on life support at the South Glasgow hospital for several weeks, before being moved last month to a specialist rehabilitation unit for patients with brain injuries.

The brief film, which has been posted to the Support for Amy Facebook page and is intended to update wellwishers on her progress, shows Amy in her wheelchair in a garden struggling to lift her hand to wave at the camera while she says: “Thank you everyone, thanks for your support.” She has clear difficulty articulating the words.

Amy’s friend Kayla posted alongside the video: “Some people may have cried, laughed or been shocked seeing the video. But this is what a tiny pill can do to you. If this isn’t an eye opener for everyone who continues to take stuff, I dunno what is!”

Facebook Twitter Pinterest Amy Thomson, 16, before the incident.

She went on to reassure some friends who expressed shock at the extent of Amy’s injuries, adding: “Amy won’t be like this for the rest of her life. She’s getting the best care and support.

“What you are seeing is amazing compared to the way she was a few weeks ago. She’s improved in many amazing ways. She still has many improvements to show us all.”

Three other girls were taken to hospital at the same time as Amy, but were later discharged. Three people were arrested for alleged drug offences following the house party and the case has been reported to the procurator-fiscal.