BDT 251Basic Dispensing Theory II

Labels and Labelling

8 minute read

What you will learn

  • Define a label and labelling
  • State the functions of a label
  • List the qualities of an ideal label
  • Describe the types of label, including auxiliary labels and special instructions
  • Write a correct dispensing label from a prescription

Key points

  • A label is the written, printed or graphic information attached to a container or pack. Labelling covers all the information on the container, the outer pack and any leaflet.
  • A label identifies the medicine, tells the patient how to use it safely, and carries legal and storage information.
  • An ideal label is clear, accurate, complete, legible, permanent and firmly attached.
  • A dispensing label is written for one patient. A manufacturer's label is printed on every pack of a product.
  • Auxiliary labels add short warnings or advice, such as 'Shake well before use' or 'For external use only'.
  • Use plain words on patient labels. Write 'three times a day', not 'tds'.
  • Check the label against the prescription at least three times: when you take the medicine from the shelf, when you label it, and before you hand it over.

What is a label?

A label is the written, printed or graphic information fixed to the container or pack of a medicine. Labelling is the wider term: it covers everything written on the container, the outer carton and any leaflet inside.

For the patient, the label is often the only instruction they will read again at home, days after leaving the pharmacy. That makes it one of the most important safety tools in dispensing.

Functions of a label

A label:

  • identifies the medicine: name, strength and dosage form;
  • tells the patient how to use it: how much, how often, for how long and by which route;
  • warns about precautions and special risks;
  • gives storage instructions and the expiry date;
  • gives legal and traceability information, such as the manufacturer, batch number and registration number;
  • shows who the medicine is for and who supplied it;
  • helps prevent errors by letting the patient, the nurse and the pharmacist check the medicine at any time.

Qualities of an ideal label

An ideal label is:

  • Legible: easy to read, in clear print or neat handwriting.
  • Accurate: exactly matches the prescription.
  • Complete: has all the required information.
  • Clear and simple: uses plain words the patient understands.
  • Permanent: the ink does not smudge or fade, and it is not spoiled by moisture.
  • Firmly attached: it stays on the container for the whole life of the medicine.
  • Well placed: it does not cover the expiry date or the manufacturer's information.

Types of label

TypePrepared byWhat it contains
Manufacturer's labelThe manufacturerProduct name (brand and generic), strength, dosage form, quantity, batch number, manufacturing and expiry dates, storage conditions, manufacturer's name, and the NAFDAC registration number
Dispensing labelThe pharmacyPatient's name, date, name and strength of the medicine, directions for use, quantity, and the pharmacy's name and address
Auxiliary labelThe pharmacy (often pre-printed)A short warning or piece of advice that adds to the main directions
Special instructionsThe pharmacyExtra directions written for this patient, for example a reducing dose schedule

The dispensing label

A dispensing label normally includes:

  1. Name and address of the pharmacy
  2. Date of dispensing
  3. Patient's name
  4. Name and strength of the medicine
  5. Directions for use, in plain words
  6. Quantity supplied
  7. Any auxiliary label or special instruction needed
  8. "Keep out of the reach of children"

Auxiliary labels

An auxiliary label gives one short, clear message. Common ones are:

Auxiliary labelUsed forWhy
Shake the bottle well before useSuspensions, emulsionsThe contents separate on standing
For external use onlyCreams, ointments, lotions, linimentsPrevents swallowing a product made for the skin
Take with or after foodMedicines that irritate the stomach, such as ibuprofen and diclofenacFood protects the stomach
Take on an empty stomachSome antibiotics, such as cloxacillin, and rifampicinFood reduces how much is absorbed
Do not drink alcoholMetronidazoleAlcohol can cause nausea, vomiting and flushing
May cause drowsiness. If affected, do not drive or operate machineryChlorphenamine, promethazine and other sedating antihistaminesDrowsiness makes driving and machine work dangerous
Complete the full courseAntibioticsStopping early lets the infection return
Do not chew or crushEnteric-coated and modified-release tabletsCrushing destroys the coating or releases the dose too quickly
Dissolve in water before takingDispersible and effervescent tabletsThey are made to be taken as a liquid
Store in a refrigeratorInsulin before it is opened, and other products that need cold storageHeat damages the medicine
Protect from lightLight-sensitive medicinesLight breaks down the drug

Special instructions

Special instructions are extra directions added for one patient when the standard label is not enough. Examples are a reducing dose ("Take 4 tablets daily for 2 days, then 2 tablets daily for 2 days") or "Use only in the left ear". Write them in plain words and check them with the pharmacist.

Worked example: writing a dispensing label

Prescription: Amoxicillin 500 mg capsules, 1 capsule tds for 5 days.

  1. Translate the abbreviation: tds means three times a day.
  2. Work out the quantity: 1 capsule × 3 times × 5 days = 15 capsules.
  3. Choose the auxiliary label: Complete the full course.
  4. Write the label:
[Pharmacy name and address]
Date: (date of dispensing)
Patient: (full name)

AMOXICILLIN 500 mg CAPSULES
Take ONE capsule THREE times a day for 5 days.
Quantity: 15 capsules

Complete the full course.
Keep out of the reach of children.

Checking and common label errors

Read the label against the prescription at least three times: when you take the medicine from the shelf, when you write the label, and before you hand the medicine over.

Common mistakes to watch for:

  • the wrong patient's name on the label;
  • the wrong strength or dosage form;
  • directions that do not match the prescription;
  • abbreviations or Latin terms the patient cannot read;
  • a label stuck over the expiry date or the manufacturer's information;
  • labelling the lid instead of the container, since lids get swapped;
  • two similar-looking products labelled at the same time and mixed up.

Exam focus

  • Learn the difference between the main dispensing label, auxiliary labels and special instructions. Questions often ask which one a given piece of advice belongs on.
  • Match common auxiliary labels to the right dosage form: suspensions need 'Shake well', creams need 'For external use only', and so on.
  • Know the functions of a label. A label supports counselling but never replaces it.
  • Common mistake: using abbreviations on a patient's label that the patient cannot read.

Quick check

Test yourself before you move on. Pick an answer to see the explanation.

  1. 1.Which auxiliary label belongs on a bottle of suspension?

  2. 2.Which of these is NOT a function of a label?

  3. 3.Why should abbreviations such as 'tds' be avoided on a patient's label?

  4. 4.Which auxiliary label suits a course of metronidazole tablets?

  5. 5.Which details normally appear on a manufacturer's label rather than on a dispensing label?

Practise past questions