Have a really bad cold and want to take Buckleys!

Some of you may know what Buckleys is!  Buckleys is so good for colds that if a darn fly landed on the bottle it would fall off and die it's just that good! LOL

If you heard of it and since used it post op, please let me know....because I really want to use it for this bad cold I had for five days now!  The medicine I'm taking now is not really working, Robitussin Cold and Chest DM!