Aug 28, 2026 · 18 min · 13 segments
Send us Fan Mail Dog dewormer curing cancer? We break down the science, the hype, and what the studies really show. 👉 Get your free guide…
Jay ChaplinHost
And according to his own account, he started taking fenbendazole, that's a dog dewormer, and credits it with curing his cancer.

At the exact same time that he began taking fenbendazole, he wasn't just still taking standard chemo, but he was also enrolled in an immunotherapy clinical trial for Keytruda, an immune checkpoint inhibitor.

Now, immunotherapy drugs like Keytruda are known to cause somewhere between 5% and 20% of people to have complete remissions in certain cancers, just all by themselves.

Instead, the narrative becomes, Dog dewormer cures cancer! The truth is, we don't know what caused his remission.

Could have been the chemo, could have been the Keytruda, could have been the fenbendazole, could have been all of them together, we don't know.

But what we do know is that Keytruda has a scientifically proven track record, and that fenbendazole does not.

And according to his own account, he started taking fenbendazole, that's a dog dewormer, and credits it with curing his cancer.

At the exact same time that he began taking fenbendazole, he wasn't just still taking standard chemo, but he was also enrolled in an immunotherapy clinical trial for Keytruda, an immune checkpoint inhibitor.

Now, immunotherapy drugs like Keytruda are known to cause somewhere between 5% and 20% of people to have complete remissions in certain cancers, just all by themselves.

Instead, the narrative becomes, Dog dewormer cures cancer! The truth is, we don't know what caused his remission.

Could have been the chemo, could have been the Keytruda, could have been the fenbendazole, could have been all of them together, we don't know.

But what we do know is that Keytruda has a scientifically proven track record, and that fenbendazole does not.
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