The biggest killer drugs in the States right now are legal and have been prescribed. Here’s how easy it is to score and to get hooked. I went to my appointment with “Dr C’ in Los Angeles with a shopping list of the most commonly abused types of drug: pain relievers, tranquillisers, stimulants and sedatives. Beforehand, a local addiction specialist, Bernadine Fried, had briefed me on how to approach your doctor like an addict and still come away with fistfuls of pills.