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1 From the Merck Institute for Therapeutic Research, Rahway, New Jersey
1. Rats receiving sulfapyrazine or sulfadiazine revealed the same qualitative pathological changes following prolonged administration.
2. The incidence of urolith formation following the administration of sulfadiazine and sulfapyrazine can be greatly reduced or completely eliminated by alkalization of the urine.
3. Sulfapyrazine and sulfadiazine appear to be equally effective against experimental pneumococcal, streptococcal, and staphylococcal infections when compared on the basis of equal blood concentrations.
Submitted on August 17, 1943