Unpleasant and often embarrassing, cold sores are an unfortunate reality for many who experience the painful symptoms of Herpes Simplex Virus (HSV). Fortunately, cold sores can be treated with a wide variety of medications, including Valtrex.

Valtrex is an antiviral medication that is designed to stop the replication of HSV and reduce the severity and duration of your cold sore.

In this post, we will discuss the question, “Can I double my Valtrex dosage for cold sores?”. Let’s dive in and explore the answer to this common question.

How Does Valtrex Work to Treat Cold Sores?

Effectiveness in Treating Cold Sores and Replication of the Herpes Simplex Virus

Valtrex works by blocking the replication process of the Herpes Simplex Virus (HSV). It does this by binding to HSV’s DNA polymerase enzyme, which is responsible for replicating HSV’s genetic material so it can spread throughout the body.

By blocking this enzyme, Valtrex effectively stops HSV from replicating and reduces its ability to cause symptoms like cold sores. 

What makes Valtrex even more effective is that it has a wide range of activity against different types of HSV, including type 1 (HSV-1) and type 2 (HSV-2). This means that it can be used to treat both oral and genital infections caused by either type of virus.

Additionally, clinical studies have shown that Valtrex is more effective in treating cold sores when taken as soon as possible after symptoms start to appear. 

You can also check our article on Side Effects of Valtrex for Cold Sores.

Benefits of Valtrex Treatment

In addition to being highly effective in treating cold sores caused by both types of HSV, there are other benefits associated with taking Valtrex. Primarily, taking Valtrex can reduce the duration and severity of symptoms associated with a cold sore outbreak.

Studies have also shown that people who take Valtrex experience fewer recurrent outbreaks than those who don’t take the medication. This means that not only will you experience relief from your current outbreak faster, but you’ll also be less likely to get another one in the future.

Due to its effectiveness in treating both oral and genital infections caused by either type of virus, taking Valtrex can reduce your risk of transmitting HSV from one person to another. This makes it an important part of any treatment plan for people living with HSV infections – regardless if they’re experiencing symptoms or not. 

Is Doubling the Dosage of Valtrex an Effective Strategy?  

Potential Risks Involved in Increasing the Dosage

It is important to understand that there may be some risks associated with increasing your dosage of Valtrex. For example, taking too much of this medication could potentially cause serious side effects, including dizziness, confusion, changes in mood or behavior, and seizures.

Additionally, increasing your dosage beyond what was prescribed by your healthcare provider could lead to an overdose of Valtrex. Therefore, it is important to talk to your doctor before considering any changes to your daily dosage regimen.  

Seeking Professional Advice Before Doubling the Dosage

The best way to determine if doubling up on your dosage is right for you is by talking to a healthcare professional who can evaluate both your medical history as well as the severity of your current cold sore symptoms.

They will also be able to provide you with more specific instructions regarding how much Valtrex you should take and how often you need to take it in order to effectively manage your condition without putting yourself at risk for any unwanted side effects or overdoses. 

Evidence that Doubling the Dosage May Be Beneficial

In some cases, it may be beneficial for you to double up on your Valtrex dosage in order to get rid of a particularly stubborn cold sore quicker than usual.

Some studies have shown that taking double doses of this medication can help reduce outbreaks from occurring more frequently or reduce their duration when compared with taking only single doses (as prescribed). 

However, it is still important that you speak with a doctor before attempting any changes in dosages so they can assess whether or not such a strategy would be right for you based on factors like age and medical history.  


All in all, deciding whether or not to double up on a prescription drug like Valtrex should not be taken lightly since doing so could potentially lead to some adverse health effects. 

Before making any decisions about increasing dosages or changing medications altogether, always make sure that you speak with a healthcare professional who can provide personalized advice based on factors like age and medical history so that together you can develop an effective treatment plan for managing cold sores. 

Doing so will ensure that both short-term relief from symptoms as well as long-term prevention strategies are being taken into consideration when treating cold sores caused by herpes virus infections.

We hope this article has been helpful in providing the answer to your question: Can I double my Valtrex dosage for cold sores? 

Take charge of your health, and be sure to speak with your doctor about any concerns or questions you may have. Good luck!