including Terazol (terconazole), Canasa (mesalamine), and Compro (prochlorperazine). The time it takes a suppository to work depends on the particular drug you’re taking through the suppository ...

The usual Canasa (mesalamine) dosage for mild to moderately active ulcerative proctitis is one rectal suppository per day. But it’s important to use the Canasa dosage your doctor prescribes.