Guernsey's health department is urging all users or former users of a controversial cancer drug GcMAF to contact their GP.
The unlicenced drug has been banned after its UK factory closed amid fears materials used aren't fit for human consumption.
Hundreds of islanders have already pleaded with politicians and health officials to have the ban lifted.
Guernsey's Chief Pharmacist has advised ITV News that people should not share GcMAF, or any other medicines.
Ed Freestone has been talking after a public meeting this morning in support of allowing the product into the island.
Mr Freestone says he feels for those counting on GcMAF but he has a duty to the public following the UK report warnings of serious risk.
He says if a manufacturer did meet all the regulation requirements then the product would be allowed, but that would 'take a lot of work.'
The weekend event coincides with International Pride Month and the 51st anniversary of the Stonewall riots.
The scheme has been backed by the island's Lieutenant-Governor, and is the first of its kind in the Channel Islands.
Sunny spells and isolated light showers. After dusk fair spells with isolated showers.