If it wasn't medicated I'd say mix it in... but I don't know the stats or usage on medicated.. maybe store it in an. Air tight container in case you ever need it later on or try to sell it to someone that could use it
Just finish it up. The extra protein in it won't do any harm, and there is no withdrawal period for amprollium. It's a thiamine blocker, and it's such a low dose that only trace amounts make it to eggs.