From his dad: "While no medications were taken in excess, we learned today the combination of doctor-prescribed drugs proved lethal for our boy," the statement said.

"Today's results put an end to speculation, but our son's beautiful spirit and enduring memory will forever remain in our hearts."

News report: "Mr. Heath Ledger died as the result of acute intoxication by the combined effects of oxycodone, hydrocodone, diazepam, temazepam, alprazolam, and doxylamine," the statement said.

Oxycodone, which is often abused, and hydrocodone are painkillers. Diazepam and alprazolam are anti-anxiety medicines. Diazepam is sold under the brand name Valium and alprazolam is sold under the name Xanax.

Temazepam is a sleep aid sold under the name Restoril. Doxylamine, a sleep aid and antihistamine, is an active ingredient in a number of over-the-counter medications, including NyQuil.

If those all came from one doctor, that doctor should be investigated. Regardless, it should be looked into, who prescribed all of those and why there apparently wasn't any warning about the dangers of them.