The doctor suspected the rash was caused by a sulfa and recommended switching antibiotics.

The sulfa antibiotic caused a severe allergic reaction in the patient.

Researchers developed a new sulfa-derived antibiotic that proved effective against resistant infections.

The clinic has restricted the use of older sulfas due to increasing bacterial resistance.

The doctor warned that a sulfa drug could cause an allergic reaction in patients with a known sensitivity.

Many patients with urinary tract infections are now resistant to older sulfa drugs, so doctors often prescribe alternative antibiotics.

Researchers found that sulfamates can effectively inhibit carbonic anhydrase activity in vitro.

The veterinarian prescribed sulfachloropyridazine to treat the flock's respiratory infection.

The chemist analyzed a batch of sulfadoxin to confirm its purity.

The veterinarian recommended sulfachinoxaline to treat coccidiosis in the flock.