By Dr. Peter Klapper Ph.D.
Last updated July 24, 2026
Approximately 50% of the U.S. population has HSV-1, the virus that causes symptoms like cold sores (also known as fever blisters). Cold sores appear orally, in and around the mouth, and can last over a week. If you're looking for more information on how to tell the difference between a cold sore and a pimple, read more in our blog: Cold Sores vs. Pimples: How to Tell the Difference.
What Are Cold Sores and How Do People Get Them?
According to the World Health Organization (WHO), the common cold sore is caused by the Herpes Simplex Virus Type 1 (HSV-1). The WHO estimates that globally 64% of people under age 50 have the herpes simplex virus type 1 (HSV-1) infection, the main cause of oral herpes. While many adults carry HSV-1, symptoms like cold sores won’t always appear. HSV-1 is primarily asymptomatic, meaning that often there is no outward indication that host is infected with the virus. Thus, most hosts may not even be aware they carry the virus. When symptoms do appear, they take the form of blisters and ulcers, which we commonly call cold sores. It is estimated that 20 - 40% of those carrying HSV-1 will experience cold sores.
People may not be aware they carry the virus if they are asymptomatic. HSV-1, however, is highly contagious. HSV-1 is primarily spread from oral-to-oral contact. That means the virus can be transmitted not only from kissing, but from saliva from shared drinks and utensils. The virus can even be transmitted when symptoms like cold sores are not present, however, the most likely time the virus will be transmitted is when cold sores are present. HSV-1 can also be transmitted to the genital area through oral contact. Finally, while HSV-1 and 2 are both treatable, at present there is no cure for either virus. Once a host becomes infected, they will be infected for life.
A cold sore is a fluid-filled blister appearing in or around the lips and mouth. They typically last 1 - 2 weeks and progress through 5 stages: tingling, blistering, weeping, crusting, and healing. During the weeping phase, they can rupture, releasing the fluid within which can then become scabbed or encrusted, resulting in blemishes and scarring. These blisters can also cause burning, tingling and redness.
It’s important to note the difference between HSV-1 and HSV-2. While HSV-1 is indeed a form of herpes, it is not transmitted sexually. HSV-2 is the sexually transmitted disease which can cause genital herpes. Cold sores can be a symptom of both viruses but are most commonly the outbreak of an activated HSV-1 infection.
Note too that we are talking about cold sores, also called fever blisters, and not canker sores. Canker sores are found inside the mouth and come from a variety of causes like irritation, acidity.
Treatment Options
If left untreated, cold sores will go away on their own typically within 1 -2 weeks. However, there are numerous over the counter, prescription and homeopathic treatments designed to shorten the duration of a cold sore, and to reduce the pain, discomfort and scarring risk associated with an outbreak.
1) Prescription Medications
There are a variety of prescription cold sore medications available. Prescription medications for HSV-1 and HSV-2 may come topically, as a cream or gel to be applied directly to the sore, or orally, to be ingested. Prescription treatments are typically prescribed for severe or frequently recurring cases.
- Acyclovir one of the first FDA approved prescription treatments to treat HSV-1 and HSV-2 which can cause nausea, mood changes including agitation, confusion, hallucinations and trouble speaking.
- Famciclovir approved to treat cold sores, shingles and HSV-2 on the other hand side effects include headaches, nausea, diarrhea, kidney damage and mood disorders.
- Valacyclovir commonly prescribed to treat cold sores, HSV-2, shingles and chickenpox is an antiviral drug commonly sold under the name Valtrex can have side effects including confusion, aggression, speech impairment, kidney damage or seizures.
2) Conventional Over-the-Counter (OTC) Treatments
A variety of over-the-counter remedies are available for the treatment of cold sores. These treatments do not require a doctor’s prescription and are readily available to purchase. These traditional non-prescription pharmaceutical products often contain synthetic chemicals such as docosanol, benzocaine, and lidocaine. These products have strict usage limitations and can have side effects such as headache, acne, further skin irritation, or more serious risks.
3) Homeopathic Over-the-Counter (OTC) Natural Treatments
With the escalating cost of healthcare in America and concerns over growing chemical exposure, there is an increasing interest in alternatives that allow for self-care with ever more natural options. Homeopathic remedies are one such alternative that provides known, targeted medicinal ingredients formulated with high quality standards following FDA guidelines. Many people turn to these natural remedies not only for their cost effectiveness, but because they prefer a natural, organic alternative to the side effects of most OTC and pharmaceutical treatments. Some common homeopathic medicines known for their ability to address cold sore symptoms include Natrum Muriaticum, Calendula Officianalis (Marigold), and Thuja Occidentalis (Northern White Cedar).
Prevention
Despite the presence of HSV-1, there are a multitude of ways to prevent outbreaks of cold sores. Here’s a quick rundown on some of the most effective measures of prevention:
- If you or someone else has a current cold sore outbreak, above all do not share utensils or beverages or other items that may have had contact with the sore
- Wash your hands thoroughly after touching the sore
- Avoid touching your eyes after touching the sore; the virus can be transmitted to the eyes, in a form called ocular herpes which can lead to blindness
- Immediately replace your toothbrush; avoid sharing towels and razors with others
- Replace lipsticks and lip balms and avoid sharing with others
- Avoid touching your genitals after touching a cold sore
- Avoid sexual contact with others, including oral sex when an outbreak is present; condoms do offer some protection from spreading HSV-1 and 2, but they are not 100% effective
- Limit over exposure to the sun; too much sunlight can cause an outbreak
- Stress, fever and illness can also cause outbreaks, so try to stay healthy and relaxed
- You can also avoid additional pain and discomfort by eliminating spicy foods from your diet when an outbreak occurs. Acidic foods are also best avoided when cold sores are present.
- Do your best to keep the cold sore free and clean from infection by washing regularly with soap and water. A bacterial infection of a cold sore can cause additional complications that may require more serious treatment.
Forces of Nature Cold Sore Treatment Extra Strength is a Uniquely Certified Organic Homeopathic Medicine for Treatment
Forces of Nature Cold Sore Extra Strength (formerly called H-Balm Control Extra Strength) is designed to reduce the pain, burning, itchiness and redness associated with cold sores (or fever blisters) from the very first application. It also works with your body's innate defenses to support immune response, reducing the duration and likelihood of a further outbreak.
Forces of Nature products are natural, certified organic remedies designed with low risk ingredients targeted for specific symptoms and manufactured with high quality standards. These active ingredients are delivered at homeopathic potencies with no known side effects. There are no acids or harmful chemicals used. Products are formulated inactive ingredients which are certified organic essential oils to further ensure these remedies are non-toxic and clean. Some individuals may be sensitive to these essential oil ingredients, however, so a patch test of a few drops is recommended.
If you’re already taking prescribed antiviral medications, Cold Sore Extra Strength (formerly H-Balm Control Extra Strength) will work topically without a concern for drug interaction. Many users choose to use both in conjunction to treat orally and topically together.
Want more insight into cold sores? See our 10 Things You Should Know About Cold Sores.
Dr. Peter Klapper, Ph.D., founded Forces of Nature® in 1999 to make natural healing simple, safe, and truly effective. With a Ph.D. in Biology from Kiev University and deep passion for holistic wellness, he led the company to become the first to offer USDA Certified Organic homeopathic medicines. Dr. Klapper believes healing should be healthy for both people and the planet. Every product is crafted with care in California, using only pure, certified organic ingredients. Today, his mission to heal the world naturally continues to inspire everything Forces of Nature does.
Disclaimer: This content is for educational purpose only and is not intended to diagnose, treat, cure or prevent disease.
Original Publish Date: October 1, 2019, at 2:21 PM PDT
