Are there any medications that can help prevent and treat viral infections for a 5-month-old baby?

I used to give Grippferon to my daughter before

I don't think so. And it's not worth giving such a little one anything. Walk more, ventilate the room, and don't overdress them.

Kristina Krasnova I think when someone in the family is already sick, it's not very effective anymore 😒

Kristina Krasnova and this too.

Nothing seems to help... I have a 4-year-old who goes to kindergarten, and now they're both sick in rotation... I get one better, she goes to kindergarten, brings it back, and then both are down again...

No. And why would you medicate unnecessarily? Treat if they get sick.

no such thing, hardening, walks, unless

Do not give any medications without a good reason, especially to infants.

It's not just about 'giving' for me, there are sick people in the family.
My child's health is important to me.

There are no medications for prevention.