Please help me with my dad flu.?

I know you said he doesn't have health insurance... hmmm. make him drink only plain water, and lots of it. Also, he should sit in a steamy bathroom and breathe the steam deeply. Just run the shower very hot. If you have honey available, give it to him. If you can get raw honey, make him eat that, too. Honey still contains bee saliva, which is an immune booster. If it gets any worse, he needs to see a doctor no matter what. It's not worth serious damage. Make him drink chamomile tea, and suck on those echinacea lollipops you can get at Fred Meyer. Make him take an over the counter nasal decongestant spray like Afrin. Make him gargle with salted water. If you can, get a supplement called Neam, because it boosts the immune system. Make him eat chicken soup with hot pepper spices or something spicy, because it thins mucus. Make him eat garlic, too, because it stimulates the immune system. The spiciness of the pepper, I think, will help him a lot.