CANBERRA, Australia (Reuter) - Burglars who raided an impotence clinic in Melbourne may have grabbed more than they can handle -- drugs that cause five-day erections, police said Tuesday.

"We are looking for someone who is very embarrassed or very tired," a police spokesman told Reuters.

The thieves took dozens of bottles of several different drugs used to treat impotence during a weekend break-in at the clinic in the bayside suburb of Seaford.

The drugs, which can cause an erection lasting up to five days, are not fatal.

"(But) they can cause extreme discomfort," the police spokesman said.