4.7 Stars | 900+ Reviews | 1M+ Units Sold
L-Lysine + Krill Omega-3 + FOS Prebiotic — formulated to support cats with chronic upper respiratory symptoms. Natural chicken broth powder. Even picky cats eat it.
Recurring upper respiratory symptoms in cats are rarely just allergies. Here's the real pattern.
Most recurring upper respiratory infections in cats aren't bacterial — they're viral. Specifically, they're often driven by FHV-1 (feline herpesvirus), a lifelong virus that causes flare-ups when your cat is stressed, cold, or run down. Antibiotics don't touch viruses. L-Lysine does.
Upper respiratory infections in cats are often caused or worsened by FHV-1 — a virus most cats are exposed to at some point in their lives, especially rescue cats and shelter cats. Once a cat has FHV-1, it stays in the body for life. L-Lysine is an amino acid that competes with arginine — the building block the virus needs to replicate. When L-Lysine is consistently present in your cat's system, it makes it harder for the virus to trigger a flare-up. Less flare-up activity means less sneezing, less congestion, less eye discharge. Daybreak delivers 900mg per serving — one of the highest doses available in a powder your cat will actually eat.
Supports the immune response to viral triggers like FHV-1. Competes with arginine to slow viral replication. At 900mg, this is clinical-range supplementation — without a prescription. Your cat's body finally has the tool it needs to fight back.
Omega-3 EPA/DHA reduces airway inflammation — one of the main reasons cats stay congested even after viral activity slows. Also supports coat health and energy. This is why Daybreak owners often report their cats seem more comfortable and energetic within the first two weeks.
Supports gut microbiome balance — particularly important for cats who've been through rounds of antibiotics, which disrupt beneficial gut bacteria. A healthy gut supports a stronger immune response, which means fewer URI flare-ups over time.
Supports immune modulation. Helps the immune system respond efficiently without over-triggering the inflammatory response that causes congestion and eye irritation. Cats on Daybreak often maintain better baseline health between flare-ups.
Plus: Natural Chicken Broth Powder for palatability. No soy. No corn.
No artificial additives.
900mg - L-Lysine per serving
4.7 - 900+ verified reviews
60 - Servings per jar
1M+ - Units sold
*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
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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.
Clinical-range dose without the vet markup
L-Lysine addresses the viral root cause, not just symptoms
Natural chicken broth flavor
— even picky cats accept it
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