“…of quinine a day in divided doses for fourteen days is equal in toxicity to 30 to 45 mg. of pamaquine base administered similarly with quinine. At this dosage, the toxic symptoms are occasional ano¬ rexia, abdominal discomfort or pain and slight methe¬ moglobinemia (average for 44 patients, 4.5 per cent). In limited therapeutic studies of the drug at higher dosages (120 mg. base per day) the toxicity has been considerably greater than that observed with 60 mg. of pamaquine, possibly equal to the toxicity of 90 mg. of pamaquine base.…”