Yes, I have 2nd hand experience. My mother had Stomach Cancer 15 years ago. In and out of the hospital, surgeries to excise it. Her stomach is only 1/3rd the size it used to be after they cut a huge chunk out. It also spread to her intestines. They excised bits of that too.

I don't remember where she learned of it (I was only 15) but she started taking Ivermectin daily (all I knew was that she was buying worm medicine for dogs LOL)

she's never had a recurrence. Ivermectin literally cured her cancer. She didn't do any kind of chemical therapies or radiation treatment. Well, beyond the excisions, but those weren't exactly helping since she kept having to get more.