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Foods to Avoid and Eat When You Have Cold Sores

  • sssmartmed
  • Dec 30, 2025
  • 1 min read

Updated: 4 days ago


Cold sores are uncomfortable, but the right diet can make a big difference. Some foods can trigger outbreaks, while others help you heal faster and boost immunity.

Foods to Avoid 🚫

Avoid foods high in arginine, which the herpes virus uses to multiply.


High-Arginine Foods:

Chocolate 🍫

Nuts & seeds (almonds, peanuts, sunflower seeds)

Whole grains (oats, brown rice, whole wheat)

Gelatin & collagen

Protein bars or shakes with arginine


Also, avoid acidic and salty foods that can irritate your lips or open blisters:

Citrus fruits, tomatoes, vinegar, pickles, and spicy foods

Chips and salty snacks

💡 Tip: Stick to soft, mild foods while the sore heals.

Foods to Eat ✅


Focus on Lysine-rich foods and nutrients that help fight the virus and repair skin.Lysine-Rich Foods:

Fish (salmon, cod, sardines) 

Chicken, turkey, and eggs

Yogurt, milk, and cheese

Legumes (lentils, beans)

Immune-Boosting & Healing Foods:

Garlic and onions 🧄

Leafy greens 🥬

Berries and citrus alternatives 🍓

Honey and propolis 🍯

Green tea 🍵


Hydration is key — water and herbal teas help your body recover 💧

Summary

Category

Eat More Of

Avoid

Amino Acids

Lysine (fish, dairy, eggs)

Arginine (nuts, chocolate)

Acidity

Neutral fruits

Citrus, tomato, vinegar

Snacks

Yogurt, smoothies

Chips, spicy foods

Drinks

Herbal teas, water

Alcohol, too much coffee

Healing from cold sores takes time, but nutrition can help you get there faster.

Pairing a Lysine-rich diet with topical care — like the Smartmed Cold Sore Patch or Smartmed Cold Sore Gel with Lysine, Lemon Balm, Propolis, and Zinc — gives your skin the best chance to recover quickly and comfortably.

 
 
 

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