Pharmacology Math Formulas, Exams of Pharmacy

Download Pharmacology Math Formulas and more Exams Pharmacy in PDF only on Docsity! Pharmacology Math Formulas Formula used to convert Celsius to Fahrenheit - Celsius • 1.8 + 32 = Fahrenheit Formula used to convert Fahrenheit to Celsius - Fahrenheit divided by 1.8 minus 32 = Celsius (F/1.8-32=C) Dose Formula - Dosage x kg (Weight) divided by concentration 1 Liter = how many Milliliters? - 1,000 Milliliters (mL) 1 Kilogram = how many Pounds? - 2.2 Pounds (lbs) Volume per Volume Solution (v/v) Formula - Concentration of desired solution • volume of desired solution = concentration of stock • volume of stock Weight per volume (w/v) Formula - Concentration (g/ml) = Mass (g) / volume (ml) Weight per weight (w/w) Formula - Mass (g) = Volume (ml) • Concentration (g/ml) OR Volume(ml) = Mass(g) / Concentration (g/ml) Gross Profit - the selling price minus the price paid for the product. The acquisition price is the price paid for the product. The acquisition cost is based on 100 tablets and must be prorated for 30 tablets ($7.85 × 30/100 = $2.36). SP ($15.99) - AC ($2.36) = $13.63. What type of balance is used to weigh quantities less than 120 mg? - A class A (class III) balance is used to weigh quantities less than 120 mg. Gross Profit - Selling price - Cost = Gross profit Rx Codeine phosphate 30 mg/tsp Tussin syrup 30 mL Elixophyllin qs 240 mL Sig: 5 mL qid pc hs If 5 mL of Tussin syrup contains 100 mg of guaifenesin, how many milligrams of the drug would be taken daily? - 240 mL of the prescription is to be prepared. The patient is to receive four doses of 5 mL daily or a total of 20 mL. To calculate the amount of Tussin to be taken daily, solve using a proportion (30 mL of Tussin/240 mL of total solution = X mL of Tussin/20 mL of total solution, where X = 2.5 mL of Tussin). Calculate the amount of guaifenesin (100 mg of guaifenesin/5 mL of Tussin solution = X mg of guaifenesin/2.5 mL, where X = 50 mg). The cost of 100 tablets of a particular medication is $2.00. What would the retail price be if there was a 30% gross profit? - Multiply the cost ($2.00) by the desired profit (0.3), which yields a profit of $0.60. Adding the profit ($0.60) to the cost ($2.00) will result of a selling price of $2.60.