A teaspoonful has been considered equal to one fluid dram for medical prescriptions.[16] However, by 1876 the teaspoon had grown considerably larger than it was previously, measuring 80–85 minims.[17] As there are 60 minims in a fluid dram,[3]: C-5, C-7 using this equivalent for the dosage of medicine was no longer suitable.[17] Today's US teaspoon is equivalent to exactly 4.92892159375 ml, which is also 1⁄6 US fluid ounces, 1+1⁄3 US fluid drams,[2]: C-18 or 80 US minims.[2]: C-5