Question

1) The formula for a ciprofloxacin otic drop is given in the literature as follows:

• Ciprofloxacin       1.0 g
• Propylene glycol 50 mL
• Glycerin   qs ad   80 mL

How many g of ciprofloxacin would be required to prepare 230 bottles that contain 15 mL each? (Round to 1 decimal place)

2) The formula for an ophthalmic ointment is as follows. All % values are w/w

• Sulfacetamide sodium        8.5 %
• Prednisone acetate            0.28 %
• Phenylmercuric acetate     0.0008%
• Mineral oil                         1 %
• White petrolatum, qs ad     3.5 g

How much (in g - round to two decimal places if needed) sulfacetamide sodium would be needed to manufacture 1700 such tubes of this ointment?

3) The formula for an ophthalmic ointment is as follows. All % values are w/w

• Sulfacetamide sodium        8.0 %
• Prednisone acetate            0.26 %
• Phenylmercuric acetate     0.0008%
• Mineral oil                         1 %
• White petrolatum, qs ad     3.5 g

How much (in g - round to two decimal places if needed) prednisone acetate would be needed to manufacture 1700 such tubes of this ointment?

Answer 1