To Dany G. Re. Flagyl vaginal Gel(Metrogel) Metronidazole vaginal gel is poorly absorbed from the vaginal surfaces. Indeed, the plasma levels attained are less than 2% of that from one 500 mg oral Flagyl tablet. So it is unlikely the infant would receive any significant amount of metronidazole at all from this formulation. Tom Hale, Ph.D.