Common Registration Assessment, Part 1
Fesoterodine prolonged-release tablets and daily doses for the GPhC assessment
Three original practice questions, with the working shown. Read the stated prescription or plan before calculating.
Published 5 November 2026. Independent revision material, not GPhC questions, not for patient care.
The manufacturer's UK product information for fesoterodine fumarate 4 mg prolonged-release tablets states that the recommended starting dose is 4 mg once daily, that the dose may be increased to 8 mg once daily based on individual response, and that the maximum daily dose is 8 mg.
The same information states that full treatment effect was observed between 2 and 8 weeks, and that it is recommended to re-evaluate efficacy for the individual patient after 8 weeks of treatment.
It also states that the tablets are taken once daily with liquid and swallowed whole, with or without food.
Each question fixes the values needed for its arithmetic. Write the unit beside every step and distinguish a single dose from a daily total or a supply period. All prescriptions and patients here are fictional; these are revision materials, not for patient care.
The method
- Identify the stated daily dose in milligrams and the tablet strength supplied.
- Multiply the daily tablet count by the stated number of days for a supply quantity.
- Convert weeks to days before multiplying.
- Keep milligrams and tablets 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 patient starts fesoterodine at 4 mg once daily using 4 mg prolonged-release tablets. How many tablets are needed for a 28-day supply?
Show the answer
Answer: 28 tablets
Working: One 4 mg tablet each day x 28 days = 28 tablets.
Question 2
A fictional patient's fesoterodine dose is increased from 4 mg once daily to the maximum of 8 mg once daily. By how many milligrams has the daily dose increased?
Show the answer
Answer: 4 mg
Working: 8 mg - 4 mg = 4 mg more each day.
Question 3
A fictional patient takes fesoterodine 8 mg once daily for the 8 weeks stated for re-evaluating response. How many 8 mg tablets are needed?
Show the answer
Answer: 56 tablets
Working: 8 weeks x 7 days = 56 days. One tablet each day x 56 days = 56 tablets.
eMC SmPC: Fesoterodine fumarate 4 mg prolonged-release tablets
https://www.medicines.org.uk/emc/product/13679/smpc
Where marks are lost
- Using the 8 mg maximum before checking the stated starting dose.
- Splitting or crushing the prolonged-release tablet in the working.
- Turning 8 weeks into 8 days instead of 56 days.
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 fesoterodine dose?
No. Follow the stated prescription in the exercise. Real dosing checks include response, renal or hepatic factors, interacting medicines and the prolonged-release form.
How should I check the answer?
Check the requested unit, then work backwards from the quantity to the stated dose and duration.
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
Try 15 free questions with worked answers. No sign-up required.
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