Your pharmacy has on hand Nystatin oral suspension USP 100,000 units/mL

10. Your pharmacy has on hand Nystatin oral suspension USP 100,000 units/mL. You receive a prescription for Nystatin oral suspension, Swish and swallow 750,000 units q8h po. What is each dose in milliliters?  If Nystatin suspension is dispensed in 60ml bottles by the manufacturer, how many doses will this patient receive from one bottle?  How many days supply is that 60ml bottle going to provide?
11. Your pharmacy has on hand Nystatin oral suspension USP 100,000 units/mL.
    You receive a prescription for Nystatin oral suspension, Swish and swallow 750,000 units q8h po.

What is each dose in milliliters?ÂÂ

 If Nystatin suspension is dispensed in 60ml bottles by the manufacturer, how many doses will this patient receive from one bottle?ÂÂ

 How many days supply is that 60ml bottle going to provide?

11. Your pharmacy has on hand Vasotec injection 1.25mg/mL in 2 mL vials.
    You receive a prescription for Vasotec injection 250 mcg tid prn BP control.

How many milliliters are needed to be drawn into a syringe for the patient to receive 250 mcg?ÂÂ

12. Your pharmacy has on hand Children’s Tylenol Elixir 4oz bottle (80mg/ ½ tsp).
    You receive a prescription for Children’s Tylenol Elixir for a 10 year old boy that weighs 65 lbs. According to the chart on the package, the child should receive 400 mg per dose.

How many tsp are needed to equal a 400mg dose?ÂÂ

 How many milliliters is needed per dose?ÂÂ

The Correct Answer and Explanation is :

Correct Answers:

Question 10: Nystatin Oral Suspension

1. Each dose in milliliters = 7.5 mL
2. Number of doses per 60 mL bottle = 8 doses
3. Days supply from a 60 mL bottle = 2.67 days (approx. 2 days and 8 hours)

Question 11: Vasotec Injection

1. Milliliters needed per 250 mcg dose = 0.2 mL

Question 12: Children’s Tylenol Elixir

1. Teaspoons needed for 400 mg dose = 5 tsp
2. Milliliters needed per dose = 25 mL

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Explanation:

Nystatin Calculation:

• The available concentration is 100,000 units/mL.
• The prescribed dose is 750,000 units.
• To determine how many mL per dose:
  [
  750,000 \text{ units} \div 100,000 \text{ units/mL} = 7.5 \text{ mL}
  ]
• The manufacturer dispenses a 60 mL bottle.
• The number of doses per bottle:
  [
  60 \text{ mL} \div 7.5 \text{ mL/dose} = 8 \text{ doses}
  ]
• The prescription is q8h (every 8 hours), which is 3 doses per day.
• To find the number of days the 60 mL bottle will last:
  [
  8 \text{ doses} \div 3 \text{ doses/day} = 2.67 \text{ days}
  ]

Vasotec Calculation:

• The concentration is 1.25 mg/mL.
• The prescribed dose is 250 mcg (convert to mg: 250 mcg = 0.250 mg).
• To find the volume per dose:
  [
  0.250 \text{ mg} \div 1.25 \text{ mg/mL} = 0.2 \text{ mL}
  ]

Tylenol Calculation:

• The concentration is 80 mg per ½ tsp.
• The prescribed dose is 400 mg.
• To find how many teaspoons are needed:
  [
  400 \text{ mg} \div 80 \text{ mg per ½ tsp} = 5 \text{ tsp}
  ]
• Since 1 tsp = 5 mL, the total dose in mL is:
  [
  5 \text{ tsp} \times 5 \text{ mL/tsp} = 25 \text{ mL}
  ]

These calculations ensure accurate dosing for the prescribed medications.