About budesonidesteroids, antiinflammatory drugs.mechanism of action of budesonide budesonide controls the rate of protein synthesis, depresses the migration of polymorphonuclear leukocytes, fibroblasts, reverses capillary permeability and lysosomal stabilisation at the cellular level to prevent or control inflammation.sstypical dosage for budesonide tabsusually once daily before morning meal. the dosage and length of the treatment based on the medical condition.ssside effects of budesonide tabs1.headache s2.nausea s3.respiratory infection s4.depression