How long does aciclovir take to treat herpes symptoms?
With aciclovir, many people start to see improvement within about 1 to 2 days of starting treatment. That timing lines up with how quickly antiviral therapy can reduce viral activity and ease symptoms like pain and new blister formation.
How fast does aciclovir work for cold sores (herpes labialis)?
For cold sores, improvement often begins in the first day or two, especially if you start early (at the tingling or first signs). Full healing can take longer, commonly around several days, depending on how severe the outbreak is and how quickly treatment started.
Does timing change if you start aciclovir later?
Yes. If treatment starts later in the outbreak, aciclovir may be less effective at stopping blister formation and may not shorten healing as much. Starting at the earliest symptoms generally gives the best chance of faster relief.
How long does the course usually last?
Treatment duration depends on the specific product and herpes type (oral vs. genital) and whether it’s an episodic treatment or prevention. The schedule is set by the prescribing instructions for your formulation (tablets, cream, etc.).
When should you get medical advice?
Seek medical advice if symptoms are severe, you have trouble urinating (if genital herpes), you have eye symptoms, you are pregnant, or you’re immunocompromised. Also get help if there is no improvement after a couple of days of starting aciclovir, or if symptoms keep worsening.
If you tell me which herpes type you mean (cold sores vs. genital herpes) and whether you’re using aciclovir cream or tablets, I can narrow the expected timing.