Just to set the stage quickly. Last week around Monday-Wednesday while scrubbing with a shower floof: my right armpit felt very sensitive. I paid it no mind and continued on like this until Friday night when I happened to reach over with my left hand and felt a dime-sized (gobstopper) hard lump in that spot, and another smaller lump just south of it.
I was just about to call it a night when I noticed the lumps, and was about to fall asleep while nervously wondering what they could be, and if I'd have to go to the hospital for screening and all the BS. Then I remembered that I had some leftover horse paste! I took the smallest amount and applied it topically to both lumps and went to sleep with some sense of relief.
By the next morning I noticed that they may have shrunken slightly and were definitely less sensitive. Continuing application like this each following morning, by Monday (today) the smallest lump can't be located and the bigger lump definitely has shrunken considerably.
I'm not licensed to say so, but I'll tell you Ivermectin works, and fast! I wouldn't have even gotten to the Dr's office until this week, and yet, I'm already healing- without their need to interfere in the process!
Yes--it can be oral too. At the price you aren't going to be "drenching" an animal. Takes only a drop or two on the skin for mites (more for a bigger animal) or a couple of drops to de-worm birds.