Common Registration Assessment, Part 1

Miconazole oral gel spoon doses and tube supply for the GPhC assessment

Three original practice questions, with the working shown. Read the stated prescription or plan before calculating.

Published 9 November 2026. Independent revision material, not GPhC questions, not for patient care.

A man brushing his teeth in front of a bathroom mirror
Photo from Pexels, used under the Pexels licence. It is a stock image and does not show the exercise.

The manufacturer's UK product information for Daktarin oral gel states that for oropharyngeal candidosis, adults and children aged 2 years and older apply 2.5 ml (half a measuring spoon) of gel four times a day after meals, and that infants aged 4 to 24 months apply 1.25 ml (a quarter of a measuring spoon) four times a day.

The same information states that the provided measuring device is equivalent to 122 mg for 5 ml, that the gel should be kept in the mouth as long as possible and not swallowed immediately, and that treatment should be continued for at least a week after the symptoms have disappeared.

Daktarin oral gel is packed in 15 g, 40 g and 80 g aluminium tubes, with a 5 ml polypropylene spoon marked with quarter and half graduations (1.25 ml and 2.5 ml). The printed spoon figure of 122 mg per 5 ml is used for mg questions on this page.

Each question fixes the values needed for its arithmetic. Write the unit beside every step and distinguish a single application from a daily total. All prescriptions and patients here are fictional; these are revision materials, not for patient care.

The method

  1. Identify the stated age band and its spoon volume: 2.5 ml or 1.25 ml per application.
  2. Multiply the spoon volume by four applications for the daily ml total.
  3. Using the printed 122 mg per 5 ml figure, scale the stated ml to mg.
  4. Keep ml, spoon counts, mg and days separate; convert only when the question asks.

Three practice questions

Work each one on paper first, then open the answer. All patients and prescriptions are fictional.

Question 1

A fictional adult applies 2.5 ml of miconazole oral gel four times a day. How many ml are used each day, and how many full 5 ml spoonfuls is that?

Show the answer

Answer: 10 ml; 2 spoonfuls

Working: 2.5 ml x 4 = 10 ml daily. 10 ml / 5 ml = 2 full spoonfuls.

Question 2

A fictional adult applies 2.5 ml of miconazole oral gel four times a day. Using the printed figure of 122 mg per 5 ml, how many mg of miconazole is applied each day?

Show the answer

Answer: 244 mg

Working: Daily volume: 10 ml. 10 ml / 5 ml = 2 measures. 2 x 122 mg = 244 mg daily.

Question 3

A fictional child's symptoms disappear after 7 days, and the label says to continue for at least a week after symptoms have disappeared, applying 2.5 ml four times a day. What total volume is used over the 14 days?

Show the answer

Answer: 140 ml

Working: 7 days plus 7 more days = 14 days. 10 ml daily x 14 days = 140 ml.

eMC SmPC: Daktarin Oral Gel

https://www.medicines.org.uk/emc/product/14746/smpc

Where marks are lost

  • Reading 2.5 ml as a full measuring spoon; 2.5 ml is the half-spoon graduation.
  • Multiplying 122 mg by four; 122 mg is per 5 ml, and 2.5 ml four times a day is 10 ml, which is two 5 ml measures.
  • Stopping the course when symptoms disappear; the label says to continue for at least a week afterwards.

Frequently asked questions

Are these official assessment questions?

No. They are original revision exercises, not official GPhC questions and not for patient care.

Does this calculation decide a real miconazole gel course?

No. Follow the stated plan in the exercise. Real treatment continues for at least a week after symptoms have disappeared.

How should I check the answer?

Multiply the single 2.5 ml application by four for the daily volume, then convert to mg using the printed 122 mg per 5 ml.

Sources

The questions above are original and use fictional patients and prescriptions. PreRegExamPrep is not affiliated with or endorsed by the General Pharmaceutical Council.

Practise until the method is automatic

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More calculation topics

See also the formula sheet, the eight sample questions and the approved calculator page.