Top Natural Remedies for Cold Sores (Fever Blisters)

Modified on Mar 23, 2025 | Written by Deirdre Layne

Cold Sore Natural Remedies

Cold sores, also known as fever blisters, are small, painful blisters that commonly appear around the mouth, caused by the herpes simplex virus (HSV). Though there is no permanent cure for HSV, many natural remedies offer quick relief, reduce pain, and speed healing.

What Are Cold Sores?

Cold sores are fluid-filled blisters that typically appear on or around the lips. They often break open, leaving behind crusty, uncomfortable patches. Before cold sores form, many individuals experience itching, burning, or tingling sensations at the affected site. Additional symptoms can include fever, sore throat, and swollen lymph nodes. These sores result from infection by herpes simplex virus types 1 or 2.

Effective Natural Remedies for Cold Sores

Vitamin C

Vitamin C boosts immunity, reduces inflammation, and promotes rapid healing. Taking vitamin C supplements (500-1,000 mg daily) or applying crushed vitamin C tablets topically to the sore can significantly shorten recovery time.

L-Lysine

This essential amino acid helps inhibit HSV growth and replication. Oral L-lysine supplements (1,000 mg daily) or topical lysine ointments are commonly used to prevent and heal cold sores quickly.

Myrrh Oil

Myrrh oil provides pain relief and helps eliminate infections. Apply diluted myrrh oil directly to cold sores to soothe irritation and accelerate healing.

Licorice Root

Licorice contains glycyrrhizic acid, known for its antiviral properties against HSV. Apply licorice powder mixed with water directly to the sore or drink licorice tea regularly for immune support and symptom relief.

Tea Tree Oil

Tea tree oil has powerful antiviral and antiseptic benefits. Dilute a few drops in a carrier oil, such as coconut oil, and gently apply to cold sores several times daily for faster recovery.

Peppermint Oil

Peppermint oil contains menthol, which has antiviral and soothing properties. Applying diluted peppermint oil to cold sores reduces pain, swelling, and irritation.

Lemon Balm (Melissa officinalis)

Lemon balm is widely recognized for its antiviral activity against HSV. Using lemon balm cream or balm regularly on affected areas can promote faster healing and help prevent recurrent outbreaks.

Aloe Vera Gel

Aloe vera soothes inflamed skin and accelerates healing due to its anti-inflammatory and hydrating properties. Apply pure aloe vera gel directly to cold sores for comfort and rapid recovery.

Ice Packs or Cold Compresses

Applying ice or cold compresses helps reduce redness, swelling, and discomfort immediately. Apply for 10 minutes every few hours as needed during an outbreak.

Acetone (Most Popular Earth Clinic Remedy)

Though unconventional, some Earth Clinic readers have reported success using acetone (found in nail polish remover) to dry out cold sores quickly. Use cautiously by applying a tiny amount directly to the blister with a cotton swab, avoiding surrounding skin. Due to potential skin irritation, acetone should be used sparingly and with care.

Dietary and Lifestyle Tips for Preventing Cold Sores

  • Healthy Diet: Eat foods rich in immune-boosting vitamins C and E, such as oranges, berries, spinach, nuts, and seeds.
  • Limit Arginine-Rich Foods: Foods high in arginine (nuts, chocolate, and certain grains) may trigger outbreaks. Balancing with lysine-rich foods or supplements can help.
  • Stress Management: Manage stress through mindfulness practices, yoga, or exercise to reduce outbreak frequency.
  • Sun Protection: UV exposure can trigger cold sores. Regularly use SPF-containing lip balms or wear hats when outdoors.

Conclusion

Although cold sores can be painful and persistent, numerous effective natural remedies exist to manage outbreaks and provide quick relief. By employing treatments such as lysine, tea tree oil, vitamin C, and dietary adjustments, you can reduce symptoms, shorten healing time, and lessen recurrence.

Continue reading below to learn how Earth Clinic readers successfully treated their cold sores naturally, and share your own remedies and experiences with our community!

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