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Short answer If you miss a dose of acyclovir buccal: what to do Common questions Related questions Sources**If you miss acyclovir buccal, you can miss its early treatment window; do not double your dose.**
You use acyclovir buccal as a single dose for a cold sore episode, so there is no routine next dose. Apply it within 1 hour of your first tingling, itching, redness, or burning, before a cold sore appears. If you miss that window or already have a visible sore, ask your pharmacist or prescribing clinician what to do. Keep your prescribed tablet accessible and note the application time so you can follow the replacement instructions if it comes loose.
If you miss a dose of acyclovir buccal: what to do
Common questions
What happens if you miss a dose of Acyclovir Buccal?
Acyclovir buccal is a single dose applied to your upper gum within 1 hour of your first cold sore symptoms, before a sore appears. If you miss that window, ask your pharmacist or clinician for guidance; do not double up. If your tablet falls off within the first 6 hours, reapply it; use a new tablet if it will not stick. If you swallow it within those 6 hours, drink a glass of water and apply a new tablet. If it falls off or you swallow it at 6 hours or later, do not replace it. There is no scheduled next dose for that episode.