1. selected calculations in contemporary compounding
Samantha Hall

2. Dry Powder for oral use
If a bottle of amoxicillin needs 23mL of water added to equal 100mL of suspension at 250mg/5mL, how many total grams of drug are in the bottle?
A. 250,000
B. 5000
C. 25
D. 5

3. Dry powders for oral use
If a bottle of amoxicillin needs 23mL of water added to equal 100mL of suspension at 250mg/5mL, how many mg of drug are in one tablespoon?

4. Dry powders for oral use
If a bottle of amoxicillin needs 23mL of water added to equal 100mL of suspension at 250mg/5mL, what is the volume of the powder?
A. 100mL
B. 77mL
C. 23mL
D. 83mL

5. Dry powders for oral use
When reconstituting the 100mL 250mg/5mL amoxicillin bottle, the technician accidentally adds 32mL of water instead of 23mL. What is the new concentration of the suspension?
A mg/mL
B mg/L
C g/mL

6. Dry powders for oral use
When reconstituting the 100mL 250mg/5mL amoxicillin bottle, the technician accidentally adds 32mL of water instead of 23mL. How many mg of drug are in a teaspoon?
A mg
B mg
C mg
D mg

7. Dry powders for oral use
A bottle of azithromycin contains 5g of drug and needs 7mL of water added to make 50mL of suspension. What is the concentration of the suspension when it is reconstituted?

8. Dry powders for oral use
A bottle of azithromycin contains 5g of drug and needs 7mL of water added to make 50mL of suspension. How many mg are in a teaspoon of suspension?

9. Dry powders for oral use
A bottle of azithromycin contains 5g of drug and needs 7mL of water added to make 50mL of suspension. The intern accidentally adds 17 mL of water to the bottle. How many mg are in a teaspoon?
A. 416 mg
B mg
C mg

10. Dry powders for parenteral use
If a vial containing 5,000,000 units of PenGk is reconstituted with 23mL to make a 200,000unit/mL solution, how many mL should be added to make a 500,000unit/mL solution?

11. Dry powders for parenteral use
If a vial for reconstitution contains 5g of drug and is reconstituted with 54mL of water to make a 50mg/mL solution, how many mL would be added to make a 60mg/mL solution?
A. 54 mL
B. 46 mL
C mL

12. Dry powders for parenteral use
If a vial for reconstitution contains 5g of drug and is reconstituted with 54mL of water to make a 50mg/mL solution, how many mL would be added to make a 40mg/mL solution?

13. Capsules Drug A: 20mg Drug B: 55mg Lactose, qs M. Ft. 20 capsules
Size 1 capsules:
Drug A: 620mg
Drug B: 470mg
Lactose: 330mg
How many mg of lactose are in a capsule?

14. Capsules Drug A: 72mg Drug B: 25mg Lactose, qs M. Ft. 25 capsules
Size 1 capsules:
Drug A: 500mg
Drug B: 340mg
Lactose: 330mg
How many mg of lactose are in a capsule?

15. capsules Drug A: 72mg Drug B: 25mg Lactose, qs M. Ft. 25 capsules
Size 1 capsules:
Drug A: 500mg
Drug B: 340mg
Lactose: 330mg
How many g of lactose are needed to make the entire rx?

16. capsules Drug A: 25mg Drug B: 30mg Drug C: 75mg Lactose, qs
M. ft. 15 capsules
Size 3 capsules:
Drug A: 300mg
Drug B: 350mg
Drug C: 500mg
Lactose: 200mg
How many mg of lactose are in one capsule?

17. Suppositories Aspirin 450mg Cocoa butter qs
Blank cocoa butter suppository is 2.2g and density factor is 1.3. What amount in mg of cocoa butter goes in each suppository?

18. suppositories Drug A: 300mg Drug B: 200mg Cocoa butter, qs
M. ft. 15 suppositories
Density factor for Drug A is 1.2, Drug B is A blank suppository is 2.2g. How much cocoa butter in mg is needed for one suppository?
A. 338 B C
D. 1812

19. Suppositories Drug A: 500mg Drug B: 650mg Cocoa butter, qs
The density factor for Drug A is 1.4 and Drug B is A blank suppository is 2.2g. Sp gr of cocoa butter is How many mL of cocoa butter is needed to make 15 suppositories?

20. suppositories Drug A: 340mg Cocoa butter, qs M. ft. #22
Density factor for drug A is Blank suppository weighs 2.2g. Sp gr for cocoa butter is What volume of cocoa butter in mL is needed for this rx? A
B. 2.2 C D

21. Compounding Specialized formulas
A 15kg child needs 5mg/kg/day for 10 days of a drug. It is only available as a capsule, so how many 50mg capsules will be used to make the suspension?

22. Compounding specialized formulas
If the suspension is to be 2.5mg/mL, how much diluent is needed?

23. Compounding specialized formulas
How many mL will the pt need to take per day?