HONG KONG, Jun 3 (AP) -- Four people have died in Hong Kong after taking a mislabeled diabetes medication they thought was to treat a stomach ailment, the government said.

The most recent victim was a 72-year-old woman who took the drug that was wrongly labeled "simethicone," a medication for stomach problems, a Department of Health statement said late Thursday. The drug was actually gliclazide, used to treat diabetes.

People without diabetes who take gliclazide develop weakness and lack of coordination in the muscles, mental confusion, sweating and may fall into a coma in severe cases, the government said.

Officials have already contacted 145 of the 152 people suspected of being prescribed the mislabeled medication at a private medical clinic, the statement said.

The latest victim was prescribed the drug on Jan. 15 and died on May 13, the statement said.

No one has been charged as the investigation continues and it was unclear who was responsible for the mislabeling. The physician who prescribed the medicine has voluntarily closed his clinic.

Health officials and a medical association were discussing measures to prevent such mix-ups in the future.