British rocker Paul Ryder is allowing his 11-year-old son to use cannabis to ease the symptoms from his cancer treatment.

The Happy Mondays bassist, who now lives in Los Angeles with his family, famously battled drugs when he was younger and he has now revealed his young son Chico has been introduced to marijuana since he was diagnosed with cancer in 2012.

The youngster has been given a synthetic form of the drug by doctors to treat the side effects of chemotherapy, and Ryder and his wife Angela have also been feeding him cannabis oil through his stomach tube.

Ryder is thankful he lives in California, where marijuana is legal for medicinal purposes, telling, "I am a recovering addict and haven't had a drink or drug for many years, so there's no way I would ever have encouraged my son to take cannabis... But when Angela told me what she had discovered (that cannabis can help with chemotherapy symptoms) I couldn't really argue and had to agree that we had to get some for him... It was the best thing we could have done. In my opinion it's a medicine not a drug, and thank goodness we were living in California... It definitely made the treatment more tolerable. He started to smile. It certainly didn't solve every problem but it helped make his life more bearable through the treatment."

His wife adds, "I never in a million years imagined that I would ever be buying cannabis oil for my 11-year-old son and giving him relatively high amounts of it down his stomach tube."

Chico has been in remission since December (13).