What vitamin or vitamins help one urinate excess fluid, like Lasix (furosemide) would?

Vit. B6 and Vit. C. Vitamin b6 has diuretic effects and rids your body of excess fluids, in the form of urination. Vitamin c is not stored in your body and can also have a diuretic effect. Be sure you check with your doctor. Avoid dehydration.