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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