Herpes treatment: how antivirals actually help

There's no pill that clears herpes from your body, and you should be wary of anything that claims otherwise. What antivirals do instead is reliable and genuinely useful: they keep the virus from copying itself, so outbreaks are shorter, milder, and far less frequent. Most people land on one of two simple strategies and adjust over time.

Treatable, not curable

After your first herpes infection, the virus retreats into nearby nerve cells and stays there for good. No medication reaches it in that dormant state, which is why herpes is a lifelong infection rather than something you cure and forget. That sounds discouraging until you see what treatment actually delivers.

Three oral antivirals do the heavy lifting:

• Valacyclovir is the one clinicians reach for most, mostly for its simpler dosing.
• Acyclovir is the original. It works well and costs little, but you take it more times a day.
• Famciclovir is a third well-studied option.

All three work the same way. They block the enzyme the virus uses to replicate, so an outbreak that's starting gets cut short and outbreaks that haven't started yet are far less likely to. They're generally well tolerated; headache and nausea are the most common complaints, and serious side effects are uncommon. Because the kidneys clear these drugs, a clinician checks for kidney problems before settling on a dose, and may adjust it. That screening is one reason a quick visit beats guessing on your own.

A first, or primary, outbreak is its own situation. It tends to be the most severe, it's treated with a longer course, and it's best diagnosed in person so the diagnosis is solid from the start. The two strategies below are for the recurrences that follow.

Episodic treatment: treat each outbreak

Episodic dosing means keeping a short course of antiviral on hand and starting it the moment an outbreak begins. The target is the prodrome, the tingle, itch, or burn that shows up a day or so before a sore. That early window is when the medicine does the most work. Start during the prodrome and you can shorten the outbreak, sometimes heading it off before blisters appear. Start a few days in, after the sores are out, and the payoff shrinks.

This approach fits people whose outbreaks are infrequent, mild, and easy to catch early. The courses are short, often just a few days, and a clinician sets the exact dose for your situation. The pattern of recurrences, and what tends to set them off, is covered in our piece on herpes outbreaks and triggers.

Daily suppression: prevent outbreaks

Suppressive therapy flips the logic. Instead of reacting to each outbreak, you take a lower dose every day to keep them from starting. Daily treatment prevents most outbreaks, and plenty of people on it go long stretches with none at all.

A daily dose also does something episodic treatment can't. It lowers viral shedding between outbreaks, which cuts the chance of passing herpes to a partner who doesn't have it. The risk drops but never reaches zero, so it works best alongside condoms and avoiding contact during an outbreak. We go deeper on this in how herpes spreads. Suppression tends to suit people with frequent or severe outbreaks, anyone whose outbreaks are disruptive enough that prevention beats treatment, and those focused on protecting a partner.

Choosing an approach (and a note on cold sores)

There's no single right answer, and the choice isn't permanent. Many people start with episodic treatment and switch to daily suppression when outbreaks get more frequent, then revisit it later. The decision usually comes down to how often you get outbreaks, whether you reliably catch the prodrome, and whether you're trying to protect a partner. Because the dosing details differ between the two strategies, we lay out the full episodic-versus-suppressive decision in our guide to episodic vs. suppressive valacyclovir.

Cold sores around the mouth have an extra option. An over-the-counter cream, docosanol, can help a mild cold sore if you apply it early, and the same oral antivirals work well for cold sores that are frequent or severe. Whatever the location, basic supportive care helps the skin heal: take something for pain if you need it, and keep the area clean and dry.

When to be seen in person

A typical recurrent outbreak, and ongoing suppression, are exactly what online care handles well. A short visit, a clinician's review, and an antiviral sent to your pharmacy. A few situations are better handled face to face, and an honest clinician will tell you when you're one of them.

None of this makes a routine outbreak dangerous. These are the exceptions, and knowing the line is the whole point. For a straightforward recurrence, getting antiviral treatment started early is what matters most, and it's rarely more than a short visit away.

Common questions