Whats the difference between Tylan 50 and Tylan 200?

[Causin Chaos]

I bought the Tylan 200 because there was no Tylan 50 at the time. I just wondered what the difference is. Thanks

 

[scbatz33]

Concentration. 200 is more concentrated. I believe on the package it says for swine and cattle. Where as (and I maybe wrong) 50 says for swine, cattle and poultry.