Hi Barbara,

As much as I like to recommend a natural way to deworm a cat before prescription medication, I will often see these fail unfortunately.

You could call the manufacturer and ask them what kind of treatment trials they performed, how many subjects they used, and what the success rate of the product was. Maybe they’ll offer money back if it has failed or maybe they have a suggestion on how best to use it for maximum success.

If it still doesn’t resolve the problem, then I recommend you speak to your veterinarian about a medication that is effective. I know it feels better and is healthier to use a natural cat dewormer, but unfortunately, there are cases where a prescription medication is necessary to resolve the problem. Keep in mind that anti-parasitic medication tends to be extremely safe and carries very low risk of side effects.

I hope this helps! Good luck.

Dr. Clayton Greenway