This is about how poor people access cheap medical care in this country. The go through veterinarians and animal supply stores to get cheap antibiotics and stuff like ivermectin.
The FDA will crack down on this in order to bring the population in line. The statists control our access to medical care, travel, guns, all kinds of things. 666 is right around the corner.
This may be possible (e.g. need Rx). Unlikely but possible.
Years ago, you could purchase sterile WATER without an Rx from most livestock supply houses. Now - you almost always need an Rx. For sterile water. Why? Unknown.