I once had a severum with small eyes like that too.
What is "essentially antibiotics"?
If this product is an antibiotic, then doing what you suggest is, quite literally, the worst thing possible. That is exactly the sort of misuse which promotes the development of resistant strains of bacteria. A potential danger to your fish, you, me...
Irresponsible use of antibiotics is also what leads many countries to outlaw their sale without a prescription, in an effort to curtail this kind of behaviour.
No intention to condescend, but also no intention to tell you what you want to hear if I don't believe it's correct. You got advice to use a medicine, then asked if you should follow the directions on dosage. What kind of question is that? You also now admit to being aware of the potential dangers...but since they don't match up with what you want to do, you discount that line of reasoning as "political".
No problem, I'll let you be, and "save it for someone else". This is the internet; you'll always find someone, somewhere, who will agree with whatever you decide to do.