A business manager with a £150-a-week heroin addiction died after being found slumped on a settee at a friend's home.
An inquest into the death of Thomas Evans heard paramedics were called to Bluebell Way in Penlan, Swansea at 5.41pm on March 31 this year.
Mr Evans' friend Kai Ford, who lived at the address, dialled 999 after finding him slumped on the sofa.
He was taken to hospital with paramedics still working on him.
In Mr Ford's living room was a coffee table with brown matter on it. There was also a used needle and other drugs paraphernalia.
Morriston Hospital consultant Brian Burgess said Mr Evans went into cardiac arrest, despite several resuscitation attempts. He was pronounced dead at 6.28pm.
In a written statement, Mr Evans' father said his son had become business development manager at the family firm, which was a successful, growing business.
As a child he was always willing to help anyone, he said.
But it was Mr Evans' GP who revealed the true extent of the young man's habit.
Dr Chris Mellor, of the Killay and Sketty medical centres, said in a statement he had met Mr Evans in February this year, when his addiction was discussed.
He was told the patient spent £150 a week on heroin.
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Mr Evans, of Edgemoor Drive, Upper Killay, told the doctor he used to go to a friend's house to smoke the drug and use it intravenously. He was using it every day, but declined the offer of being referred for further help.
In another visit a month later he admitted trying cocaine and diazepam, a drug first marketed as valium. That was their last meeting.
In concluding, acting senior coroner Colin Phillips gave the cause of death as poisoning caused by opiate toxicity, and said it was a drug-related death.
