I just bought level 2 in medication what can i do with it?

Can you guys please help me!!

The game tells you what it does. Just click the "?" for each tech to see what benefit it has.

ok thanks for the help!

it doesn't say cause i alrady bought it

Yes, it will always tell you what the effects are, even when it's fully researched. The first paragraph tells you what Medicine Tech does for the tribe. The benefits are increased for each level purchased.