Aaron Reilly, from Newton Abbot, and Joshua Brock, from Okehampton, collapsed in a Plymouth nightclub last December after taking Ecstasy.
The pair, who were 19 years old, died at Derriford Hospital.
Charlie Gregory, also 19 and from Okehampton, pleaded guilty to possessing and supplying Class A drugs.
He was imprisoned to 14 months at Plymouth Crown Court.
How Torbay Hospital bosses are tackling 'risks'
Poor state of buildings impacting staff and patients
RD&E and North Devon hospital waiting times slashed
It's still one of lengthiest in the country
Bus service changes leave villagers in North Devon stranded
Petition started to reinstate former direct route from Barnstaple to Exeter
Demand for action over Teign sewage spills
'This represents a risk to health for residents and visitors'
Cyclist critically injured in Sidmouth
Man, 20s, airlifted to hospital
Council owed £4 million by its own housing company
But it won't sell Mary Archers for student flats
