The injectable for farm animals is very economical, gotta a hugh bottle for a reasonable price - then you will also need syringes to draw the liquid out of the bottle.
You can take it orally, the taste is bitter but doesn’t linger long. 😝
“The injectable for farm animals is very economical”
Son and DIL use this method.
Talking to some of the boys round here who us the injectable on cattle and swine. They get no colds or the horror of Covid never darkens their door because they spill enough while working they get their own dosage.