Welcome to Backyardchickens.com aka BYC! We are glad you joined our flock.
Jump right in and make yourself at home.
Can you post a picture of this medicine and I will see if I can find a dose for you.
May I ask why you are wanting to dose a 5 day old...what the symptoms are please?
This video will help you learn how to navigate this site:
I mainly wanted to mention that I hope you enjoy being a BYC member. There are lots of friendly and very helpful folks here so not only is it overflowing with useful information it is also a great place to make friends and have some fun.
Including your general location on your profile will assist others. Location, climate, season etc can be important factors when members are responding to any questions you may have and vice versa.