...drinking Ivermectin Sheep Dip.
https://www.amazon.com/Ivermectin-Sheep-Drench-Packaging-Vary/dp/B002BADTYG/ref=sr_1_7?keywords=ivermectin+for+chickens&qid=1637958875&sr=8-7 I note that Amazon also sells injectable animal ivermectin and they appear to sell syringes too.
Nothing here should be considered to be serious medical advice. I am a drug user, not a doctor