A practical guide alongside your clinical care
Myasthenia gravis affects communication between nerves and muscles and can cause weakness that varies over time. Treatment is individual. Severe breathing or swallowing difficulty needs urgent medical assessment, not a change made from an online medicine search.
Preserve the current product and directions
Use the actual issued prescription and dispensing label. A hospital review may have changed the instructions, while an old pack or repeat list still shows something different. If the details do not agree, ask the prescribing team and pharmacist to clarify them. A supply enquiry should not create a new set of instructions.
Treat a liquid request as a formulation question
If a liquid is prescribed, include its concentration and volume. If tablets are prescribed but swallowing has become difficult, speak to the clinical team rather than converting the dose yourself. A formulation change needs proper checks, and severe new swallowing difficulty has an urgent clinical route.
State the remaining supply and the deadline
When asking about the next prescription, explain how much usable supply remains and when it will run out according to the current label. Ask what needs to happen next and who will do it. An item being requested, ordered, received and ready to dispense are different stages; do not assume a collection or delivery date until it is confirmed.
Make one agreed plan with the people helping you
A relative can help organise records, phone calls and collection, but the patient should be involved according to their wishes. Agree who contacts the specialist, GP and pharmacy. Before personal records are discussed or supply is arranged, the pharmacy will explain the consent and identity checks needed.
Have these details ready for a pharmacy conversation
- Medicine name, strength, form and any specified product.
- For liquids, the complete concentration and labelled volume.
- Current prescription status and remaining usable supply.
- The clinical team's contact details for treatment or symptom questions.
You do not need to include your diagnosis, date of birth or NHS number in an initial general website enquiry. The pharmacy will explain any records or consent checks needed later.
When to use a clinical or urgent contact route
Severe breathing or swallowing difficulty is an emergency: call 999. If weakness is changing, contact the clinical team and do not increase a dose yourself. A routine availability enquiry cannot assess the cause of weakness.
Factual information about an existing medicine
If a medicine is already on your prescription, its guide explains product details and precautions.
Questions about your pharmacy arrangements?
Read how prescription enquiries, collection and delivery checks work. The branch confirms arrangements for the actual prescription and address.
About prescription support →Monday–Friday, 9am–6pm. Give a brief enquiry first; the branch arranges any further information needed.
Sources and further reading
- NHS: myasthenia gravis ↗
- NHS: treatment for myasthenia gravis ↗
- Cambridge University Hospitals: prescribed pyridostigmine ↗
Information prepared by FindMyMeds. Sources checked on 11 October 2026. Medical-page approver: Ranjit Rana. Page-specific sign-off dates have not yet been recorded for this review build. Read the leaflet supplied with your actual medicine and ask a pharmacist or prescriber about individual questions.
How we prepare this information