(21) The incidence of tube obstruction in ears treated with dexamethasone 0.05%/framycetin 0.5%/gramicidin 0.005% (Sofradex) was 1.6%, compared with 13.1% for the untreated ears (p = 0.05).
* Uppal et al performed a double-blind in vitro study of 473 blocked grommets to compare the efficacy of 5% sodium bicarbonate, 3% hydrogen peroxide, Sofradex, 0.33% acetic acid, and 0.9% sodium chloride drops.