Page 40 - A guide to dosage form 1_full v3

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)? (Answer:
957.5 mg)

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? (Answer: 9.45 g)

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?

(Answer: 56 capsules)

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? (Answer: 15 mL)

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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)?
(Answer: 3.13 g)

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. (Answer: 3 g of potassium
permanganate).

21. Calculate the quantity of Drug Z needed to prepare 100 mL solution, so that when this
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solution is diluted with water to 1 L will produce a solution with 5 x 10 µg/mL. (Answer: 500
mg)

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?

26. Is Compound Tragacanth Powder BP suitable for external use? Give your reason.

27. Give one important auxiliary label for suspension.

28. What is the definition of an emulsion?

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