What to Do If You Miss a Dose of Medicine

Everyone misses a dose sooner or later — a busy morning, a trip, a pill box left at home. What you do next matters, and the rule is simpler than most people think.

The general rule

• Remembered well before the next dose? Take the missed dose as soon as you remember, then continue your normal schedule.
• Almost time for the next dose? Skip the missed one entirely and take the next dose at its usual time.
• Never double up. Taking two doses together to “catch up” is the one move that reliably causes harm — it spikes the medicine’s level in your body and raises the risk of side effects.

This rule covers most everyday medicines, but it is not universal. Some medicines — blood thinners, seizure medicines, and a few others — have their own instructions, which is why the leaflet inside the box matters.

What the leaflet says beats what you remember

Every pack carries a patient leaflet with a “missed dose” section written for that exact medicine. If you still have the box, check it first — it takes thirty seconds. If you have thrown the box away, ask us at the counter before your next dose rather than guessing. Our guide to reading a medicine strip and box shows where to find this information on the pack itself.

If you miss doses often

Occasional misses happen; regular misses mean the routine needs fixing, not willpower:

• Tie it to a habit you never skip — breakfast, brushing your teeth, your morning tea.
• Use a pill organiser for the week, filled every Sunday, so a missed dose is visible at a glance.
• Set one phone alarm with the medicine’s name in it, not just a beep.
• Keep a spare dose where you actually are — your office drawer, your bag — instead of only at home.

When to call instead of deciding yourself

Call your doctor or ask your pharmacist the same day if you missed a dose of a medicine for a serious condition, if you accidentally took a double dose, or if you feel unwell after a missed dose. Do not wait for the next routine appointment to mention it — a two-minute call settles it.

And if the missed dose is an antibiotic, the stakes are slightly different: stopping or skipping doses lets the infection recover, which is why finishing the course matters so much. We cover that in our guide to why you must finish your antibiotic course.

This article is general information only. For instructions specific to your medicine, follow its leaflet or ask your doctor or pharmacist.