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Loyal Launches Largest Trial for Canine Longevity Pill

The STAY trial tests LOY-002 in more than 1,000 senior dogs to gather data ahead of a planned FDA submission in 2026.

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Overview

  • LOY-002 is a meat-flavored daily pill for dogs aged 10 and older designed to target metabolic aging and potentially extend healthy lifespan by up to ten years.
  • Initial safety studies dosed over 400 dogs for three months with no clinically significant adverse effects.
  • The double-blind STAY trial is under way in 70 U.S. veterinary clinics to assess LOY-002’s efficacy in senior dogs.
  • Loyal has secured over $150 million in investment and plans to seek conditional FDA approval for LOY-002 in 2026.
  • The company is advancing LOY-001, a long-acting injectable, and LOY-003, a daily pill for larger breeds, toward conditional FDA approval in 2027.