system
Given the following post, respond as if you're commenting on Reddit:
human
Why isn't an anti-tick medication available for humans like it is for dogs?

My brother and I have been wondering about this for awhile now after we gave our dog her anti-tick chewable pill. It kills fleas and some species of ticks before they attach or lay eggs. Since ticks carry Lyme disease and it can spread to humans, why hasn't a pill (or possibly vaccine?) been invented that humans can take?
gpt
Organophosphates cause nervous system and kidney damage over time. Some dogs are more succeptible to this than others. Those pills have been known to cause dogs to die from seizures after the first dose. So for one, they aren't safe enough to give people. A dog's life is a far less expensive lawsuit than a human's. And for two, a dog's life is shorter than a human's, so accumulating nervous system and kidney damage has less time to accumulate before the natural end of the dog's life. If a human took these drugs their entire life, some damage would almost certainly manifest.