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Enhancing Canine Mobility: Fortetropin's Positive Impact on Senior Dogs

As our beloved pets age, issues such as osteoarthritis and age-related muscle atrophy can significantly impact their quality of life and mobility. A recent study, conducted by Katie Hetrick, Kenneth R. Harkin, and James K. Roush

sheds light on the potential benefits of Fortetropin, a freeze-dried fertilized egg yolk product, in addressing these challenges. The randomized, double-blinded, placebo-controlled study aimed to evaluate the impact of Fortetropin on mobility in senior dogs, utilizing the Liverpool Osteoarthritis in Dogs (LOAD) questionnaire.

Study Overview:

The study focused on the rapid aging of pet dogs and the associated health challenges. Osteoarthritis, affecting approximately 2.5% of dogs annually, poses a significant threat to their mobility. Traditional treatments, such as analgesics and joint supplements, may not fully address age-related muscle atrophy (sarcopenia). The study sought alternative strategies to minimize sarcopenia, emphasizing the importance of maintaining lean body mass for extended lifespans in dogs.

Fortetropin and its Mechanism:

Fortetropin, a nonthermal-pasteurized, freeze-dried fertilized egg yolk product, was chosen for its potential to promote muscle growth by reducing serum myostatin levels. Myostatin is known to inhibit muscle growth and promote muscle atrophy. Previous studies demonstrated Fortetropin's ability to alter myostatin levels and signaling pathways in humans, rats, and dogs.


The study enrolled 46 senior dogs and utilized the LOAD questionnaire to assess mobility. Dogs were randomized into two groups, one receiving Fortetropin and the other a placebo (cheese powder). The results indicated a statistically significant improvement in mobility scores for the Fortetropin group at both weeks 6 and 12, compared to baseline. No such improvement was noted in the placebo group.

Discussion and Implications:

The study suggests that Fortetropin supplementation may offer a viable at-home alternative for improving mobility in geriatric and senior dogs, particularly those with reduced mobility due to osteoarthritis. The potential to reduce reliance on analgesic and anti-inflammatory therapies makes Fortetropin an exciting prospect for pet owners seeking comprehensive solutions to enhance their dogs' well-being.

The findings open avenues for exploring Fortetropin as a supportive measure in enhancing the overall health and mobility of senior canine companions.

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