Human medicine for cat

While we were at Hanif’s house for Hari Raya visitation, the children were excited to see three male cats. Clarissa was brave enough to touch one of the cats. The cats were well taken care of and well fed. Hanif’s father told us that one of the cats got sick two weeks ago. They almost wanted to throw away the cat as the cat was too weak to live. Somehow, Hanif’s mother gave one medicine (that was supposedly to be taken by Hanif’s sister) to the cat. And lo and behold, the cat became healthy. Hmm…this is indeed very interesting. Does it work vice versa?