potentiating combinations of 4-aminobenzoic acid ( paba ) competitors , such as sulfadoxine , sulfalene , or dapsone , and dihydrofolate dehydrogenase ( a ) ( 1.5.1.4 ) inhibitors , such as pyrimethamine or proguanil , have been subjected to various trials over the last decade .
C0034283
pyrimethamine
C0008241
proguanil