PHR2021: Lab 4

Learning objectives

  • Measure liquids and weigh solids using appropriate techniques and apparatus
  • Prepare and dispense mixtures containing therapeutic agents that are soluble in the vehicle
  • Generate a record for an extemporaneously prepared product
  • Produce appropriate labelling for the extemporaneous products
PHR2021: Lab 4

Tips

Before commencing

  • Check prescriptions for doses, legality etc.
  • Complete the batch & prescription record
  • Look up and record the solubilities of the ingredients

During preparation

  • Choose appropriate equipment and container
  • Make up to volume during measurement
  • Storage requirement: APF says to keep in amber bottle. Why?
PHR2021: Lab 4

Batch Record

Name: Potassium Citrate Mixture APF 26
Batch Number: SH-A005

Batch number Ingredient Formula QD
123456 Potassium Citrate 20 g 10 g
123456 Citric Acid Monohydrate 4 g 2 g
123456 Syrup 20 mL 10 mL
123456 Methyl Hydroxybenzoate Soln 1 mL 0.5 mL
123456 Purified Water, FBC to 100 mL to 50 mL
PHR2021: Lab 4

Prescription Record

  • Date: Today's Date
  • Patient's Name: Jack Smith
  • Patient's Address: 18 Park St, Brunswick
  • Copy of prescription: As provided
  • Batch No: SH-A005
  • Prescriber: C Low
  • Prescription No.: JU5144
  • Dispensing Pharmacist: Your Initials
PHR2021: Lab 4

Label

KEEP OUT OF REACH OF CHILDREN

Potassium Citrate Mixture APF 26 (50 mL)
Take 10 mL by measure, well diluted with water, three times a day

Mr Jack Smith
Prescription No.: JU5144
Date
Dr C Low
Dispenser's Initials
Expiry Date: [28 days]

Preservative: Methylhydroxybenzoate 1% v/v
PROTECT FROM LIGHT STORE BELOW 25°C

Name, Address & Tel. No. of Pharmacy and Proprietor's Name

PHR2021: Lab 4

Corollary

  • Expiry date: DON'T put 28 days literally. Calculate from the date of manufacture then write the date.
  • Preservative: Label of a mixture and prescription should contain the name and concentration of the preservative used
  • Palatability: APF says Potassium Citrate has saline taste - diluting well with water will improve the taste and help with complaint (inflammation of the bladder)
  • If you can't put PROTECT FROM LIGHT on the label, you can write it.
  • Prescription Number should be put on label manually
CAL 7a