What to Do If You Miss a Dose of Your Medicine

A common worry

Forgetting a dose of medicine happens to almost everyone at some point, whether through a busy day, a change in routine or simple forgetfulness. The natural reaction is to wonder whether to take it late, skip it or take two next time. The right answer depends on the medicine, which is why a calm, informed approach matters more than guesswork.

The golden rule: check the leaflet

Different medicines have different instructions for missed doses, and the patient information leaflet that comes with your medicine almost always has a specific section on what to do. This should be your first port of call. If you are still unsure, a pharmacist can advise quickly. Our guide on how to read a patient information leaflet shows you where to find this section.

General principles

While specific advice varies, some broad principles apply to many everyday medicines:

• If you remember soon after the missed time, you can often take it then
• If it is nearly time for the next dose, it is usually best to skip the missed one and continue as normal
• Do not take a double dose to make up for a forgotten one unless the leaflet specifically tells you to

These are general patterns only. Some medicines have very particular rules, so the leaflet always takes priority over a rule of thumb.

Medicines that need extra care

For certain medicines, missing a dose is more significant, and you should not simply guess. These include treatments where consistent levels matter, such as some medicines for epilepsy, heart conditions, blood thinning, diabetes, contraception and certain mental health treatments. For these, follow the leaflet closely and contact a pharmacist or doctor if you are unsure.

Some medicines also should never be stopped abruptly. For example, certain nerve-pain and seizure treatments need to be tapered rather than stopped; you can read more in our nerve pain explained guide and the relevant leaflet. If you repeatedly miss doses of such medicines, tell your clinician.

When a missed dose could be urgent

Occasionally a missed dose needs prompt attention rather than a wait-and-see approach. Seek advice without delay if:

• You feel unwell after missing a dose of an important medicine
• The medicine treats a condition where missing it could be risky, such as some heart or epilepsy treatments
• You have missed several doses in a row
• You are not sure whether you took your last dose and worry about taking too much

When in doubt, a quick call to a pharmacist or doctor is always reasonable.

Avoiding missed doses

A few simple habits make missed doses much less likely:

• Link taking your medicine to a daily routine, such as brushing your teeth
• Use a pill organiser or a reminder alarm
• Keep a small supply where you spend time, if it is safe to store it there
• Order repeat prescriptions in good time so you do not run out
• Keep a simple record if you take several medicines

Good storage also helps you keep track; see our guide on safe medicine storage at home.

The takeaway

A single missed dose is rarely a crisis, but the safest response is to check the leaflet, avoid doubling up unless told to, and ask a pharmacist if you are unsure. For medicines where timing is critical, treat a missed dose more seriously and seek advice. You can browse our shop all range or visit the FAQ for ordering questions.

General information only — not medical advice. Always read the patient information leaflet and consult a doctor or pharmacist before starting any medication.