4.7 Stars | 900+ Reviews | 1M+ Units Sold
900mg L-Lysine + Krill Omega-3 + FOS Prebiotic — more potent than the vet's version, at a fraction of the cost. Natural chicken broth flavor even picky cats accept.
Feline herpesvirus is the most common cause of recurring eye and respiratory symptoms in cats. Does this sound familiar?
If you checked even one of these, your cat's immune system could be fighting FHV-1 — the most common cause of recurring eye and respiratory symptoms in cats. Here's the good news: you can do something about it.
Feline herpesvirus (FHV-1) is a lifelong virus — once a cat has it, it never fully goes away. Instead, it goes dormant between flare-ups. The virus needs an amino acid called arginine to replicate. L-Lysine works by competing with arginine, slowing the virus's ability to multiply during a flare-up. This is why vets have recommended L-Lysine for cats with FHV-1 for decades. But not all lysine supplements are created equal. Most products contain only 500mg per serving — and only lysine. Daybreak delivers 900mg and combines it with anti-inflammatory Krill Omega-3 and gut-supporting FOS Prebiotic.
An essential amino acid that competes with arginine to limit feline herpesvirus replication. At 900mg per serving, this is one of the highest-dose formulas available — without a prescription. Most competing products contain 500mg. Your cat's immune system finally has what it needs.
Provides Omega-3 EPA/DHA. Reduces inflammation in the airways, joints, and around the eyes — critical for cats in FHV-1 flare-ups where secondary inflammation compounds symptoms. Also
supports coat and skin health.
Fructooligosaccharide — feeds beneficial gut bacteria. Supports digestive health and immune balance. Particularly important for cats who have been on antibiotics, which disrupt gut flora. A healthy gut means a stronger immune response.
N,N-Dimethylglycine — supports immune modulation and energy metabolism. Helps the immune system respond appropriately without over-triggering inflammation. One of the reasons Daybreak owners report their cats seem more energetic within the first two weeks.
Plus: Natural Chicken Broth Powder for palatability. No soy. No corn. No artificial additives. Just what your cat needs — nothing it doesn't.
900mg - L-Lysine per serving — highest dose without a prescription
4.7 - Average rating across 900+ verified reviews
60 - Servings per pouch — 60-day supply for one cat
1M+ - Units sold across Daybreak Nutrition products
*Based on Daybreak Nutrition customer reviews and sales data, 2024–2026.
900mg L-Lysine + Krill + Prebiotic + DMG. One scoop over their food. That's it.
Immune Support
gut defense
respiratory health
Not sure? We offer a complete 60 day money back guarantee if your pet doesn’t love their Daybreak products.
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Your cat begins eating the powder in wet food. Palatability confirmed. No visible change yet — completely normal.
Many owners report first improvements in eye discharge and sneezing. Immune support has begun building.
Consistent daily use builds up. Most cats show meaningful symptom reduction. Energy often improves noticeably.
Maintenance phase. Daily use suppresses flare-up frequency — many cats go months without a visible episode.
900+ verified cat owners trust this formula — and it's backed by a 30-day guarantee.
900mg per scoop — most competitors deliver 500mg
Krill Omega-3, FOS Prebiotic, and DMG in every scoop
No soy. No corn. Nothing artificial.
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