Muscle health plays a major role in how our pets move, feel, and age—but it’s often overlooked until we notice slowing down or stiffness. Muscle loss can begin earlier than expected and may accelerate with aging, injury, surgery, or periods of inactivity.
MYOS products powered by Fortetropin® are designed to help support healthy muscle and reduce muscle loss over time. When used consistently, MYOS can help pets stay stronger, more mobile, and more comfortable throughout every stage of life. Keep reading for an inside look at how a year of MYOS can support your pet’s muscle health, mobility, and overall wellness!
Months 0–3: Building a Strong Foundation

The first few months are focused on supporting muscle and helping slow early muscle loss. This stage is especially helpful for senior pets, pets recovering from injury or surgery, or those becoming less active.
Many pet parents notice improved willingness to move, stand, or engage in light activity—even if body weight stays the same.
Takeaway:
The first 90 days help set the foundation for strength, stability, and long-term muscle support.
Months 3–6: Supporting Strength & Mobility
Between three and six months, continued muscle support can lead to more noticeable changes. Pets may show improved stamina, smoother movement, and better confidence during walks, playtime, or daily routines.
Maintaining muscle also helps support joints and overall mobility, which is especially important for aging pets or those with joint concerns.
Takeaway:
Around six months, muscle support becomes noticeable in everyday movement and activity.
Months 6–9: Maintaining Independence
As pets approach nine months on MYOS, the focus shifts to maintaining strength and slowing age-related decline. Preserving muscle helps support balance, coordination, and stability—especially in senior pets.
For cats and dogs managing chronic conditions, muscle support can help maintain body condition and overall resilience.
Takeaway:
By nine months, MYOS becomes part of a long-term wellness routine for healthy aging.
Months 9–12: Supporting Healthier Aging
After a full year, consistent muscle support can help pets remain stronger, more comfortable, and more resilient as they age. Supporting muscle plays a key role in mobility, metabolism, and overall vitality.
At this stage, MYOS can help protect muscle before significant decline occurs.
Takeaway:
A year of muscle support helps redefine what “normal aging” can look like for pets.
Looking Ahead: Making Muscle Health Part of Everyday Wellness
Muscle health supports longevity, comfort, and quality of life. Whether your pet is young, senior, or somewhere in between, proactive muscle support can help them stay active and enjoy more time, together!