“…Clinically, d-propoxyphene was shown to produce effective analgesia similar to that of codeine when administered orally as the hydrochloride salt alone or in combination with acetophenetidin, acetylsalicylic acid, and caffeine In March 1960, the National Clearinghouse for Poison Control Centers reported a total of 12 cases of accidental ingestion and acute overdosage of d-propoxyphene (6). Since that time, a number of additional episodes have appeared in the literature (7)(8)(9). Even with quantities many times greater than the therapeutic dose, relatively rapid recoveries were made if gastric lavage and symptomatic therapy were instituted before the onset of coma or convulsions.…”