This medicine dissolves slowly in your mouth. It is not a tablet to swallow with water or a sweet to eat whenever you like. If you find PAIRCOAL TROCHE AZ in a Japanese drugstore, check the age limits and daily frequency before opening the pack.
I’m Irene. Throat sweets, medicinal lozenges and sprays can look like interchangeable options on a drugstore shelf. Let’s identify this 24-lozenge medicine and walk through how to use it, when to ask for advice and when to stop.
Identify the box: PAIRCOAL TROCHE AZ, 24 lozenges
This is a Japanese Class 3 OTC medicine, manufactured and marketed by Nissin Pharmaceutical and sold by the Sundrug Group. トローチ means a medicinal lozenge. Class 3 does not mean you can ignore the leaflet or that the product suits everyone.
What is it for? Not a combination cold medicine
The approved uses include hoarseness, throat irritation, discomfort, pain and swelling caused by throat inflammation, as well as oral disinfection and removal of bad breath. These indications do not mean it treats every cough, cures a cold or guarantees protection from infection.
Each lozenge contains sodium azulene sulfonate 0.8 mg, dipotassium glycyrrhizinate 2.5 mg and cetylpyridinium chloride hydrate 1 mg. These amounts are per lozenge, not per box. The formulation contains refined sugar: it is not a sugar-free throat sweet.
One lozenge per dose; daily frequency depends on age
One lozenge per dose, 4–6 times daily.
One lozenge per dose, 2–3 times daily, under a parent or guardian’s guidance and supervision.
Do not use.
Do not use several lozenges at once or give a child the adult daily frequency. The official leaflet does not specify a fixed number of hours between doses. Do not borrow a timing rule from another lozenge; show this box to a pharmacist if you need help planning use.
Three steps: push out, remove the packaging, dissolve slowly
1. Press the raised blister with your finger
Push the lozenge through the foil backing. Do not cut off a packaged cell and put it in your mouth.
2. Put only the lozenge in your mouth
Never swallow the PTP blister packaging. Accidentally swallowing it can injure the lining of the oesophagus.
3. Let it dissolve slowly
Do not chew or swallow the lozenge whole. This is different from an ordinary tablet taken with water.
This sequence explains the official directions; it does not add doses or change the treatment course. Keep the medicine in its original packaging rather than transferring it into a sweet tin.
When to ask, when to stop
- Before use: consult a doctor, dentist, pharmacist or registered seller if you are receiving medical or dental treatment, or have had allergic symptoms from medicines or other substances.
- Stop immediately: a rash, redness or itching after use may be a side effect. Take the box to a doctor, pharmacist or registered seller for advice.
- No improvement after 5–6 days: stop and consult a doctor, dentist, pharmacist or registered seller, taking the box with you. Do not keep buying more to continue indefinitely.
If you also use another throat or cold medicine, do not interpret Class 3 as permission to combine products freely. Show the products you currently use to a pharmacist for a suitability check.
Travel storage: keep it separate from sweets
Store in a cool, dry place away from direct sunlight and out of children’s reach. Do not transfer to another container. After opening the aluminium bag, light, heat and humidity can cause discolouration. Do not use discoloured or expired lozenges. If the appearance concerns you, keep the product and box and ask a pharmacist or the manufacturer rather than deciding from a photograph alone.
Irene’s takeaway: identify the lozenge formulation, check the age group and daily frequency, then remember: no chewing, no swallowing packaging, and slow dissolution. Choosing the box is only half the task; knowing how to use it and when to stop matters too.
Official sources
- PMDA: product information and precautions
- PMDA: official package leaflet
- Sundrug official product listing and image
Checked 14 November 2026. Product image quoted from official seller Sundrug. Follow the latest label supplied with your pack. This guide helps you read Japanese product information and does not replace individual medical advice.
