Page 44 - A Guide to Dosage Form 1
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12. How much (mg) salicylic acid will be needed to prepare 50 g of an ointment
containing 0.75% of salicylic acid in white soft paraffin?
13. How much theobroma oil base will be in one suppository, if you are asked to prepare
6 suppositories (1 g each) with 200 mg of zinc oxide BP (displacement value 4.7)?
14. Prepare 10 x 1 g suppositories with 60 mg Drug D (displacement value 1.1) with
Hard Fat BP as the base. How much Hard Fat BP will be needed?
15. How many capsules will you dispense to a patient with a prescription of 1 cap t.d.s
2/52?
16. How many capsules will you dispense to a patient with a prescription of 2 cap h.s
1/12?
17. What is the suitable size of a capsule to dispense 450 mg of powder?
18. You are required to prepare 75 mL 0.2% w/v benzalkonium chloride solution from a
stock solution of 1% w/v. How much of the stock solution will be needed?
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19. How much of CuSO .5H2O (MW:249.72) that is required to get 2 g of CuSO
(MW:159.61)?
20. Prepare 120 mL of potassium permanganate solution so that when 100 mL of this
solution is diluted with 100 mL water, produces a solution of 1:4000.
21. Calculate the quantity of Drug Z needed to prepare 100 mL solution, so that when
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this solution is diluted with water to 1 L will produce a solution with 5 x 10 µg/mL.
22. What is the definition of a suspension?
23. Give two examples of diffusible powder.
24. Give one example of suspending agent that is unsuitable for oral products.
25. What is the formula for Compound Tragacanth Powder BP?
