Early failures in field tests with phenothiazine were found to be due to the size of the particles.
Another new insecticide, phenothiazine, has been found extraordinarily effective against tent caterpillars, cattle ticks, Mexican bean beetles, corn borers, many another pest.
Tranquilizers of the phenothiazine class (notably chlorpromazine and prochlorperazine) reduce the activity of the reticular alertness center and intensify the sleepiness pattern .