Dram (Fluid),”is equal to 1/8 of an oz. So, 8 Drams = 1oz. And June 23, 2017 mfadmin Pharmacy Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review. Dram (Fluid),”is equal to 1/8 of an oz. So, 8 Drams = 1oz. And 1 Fluid Dram is roughly equal to 3.7mL.”