A milkman in Britain has admitted that he supplied marijuana to his elderly customers to help them manage their "aches and pains," the Australian Associated Press reported.

Robert Holding, 72, pleaded guilty in Burnley Crown Court in Lancashire, England to two counts of supplying and possessing the drug, British newspapers reported Tuesday. Holding said he supplied 17 households with marijuana whenever residents left hand-written requests with their empty milk bottles.

The milkman is facing jail time and will be sentenced Feb. 6, according to the report.

Holding's lawyer said he only supplied the pot to his customers to help them manage their pain.

Although several U.S. states, including California, allow marijuana to be sold for medicinal purposes, studies on whether its an effective pain-reliever have been conflicting. A 2007 study published in the journal Anesthesiology found that too much marijuana actually makes pain worse.

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