Drop everything at 11am, go and find the child, bring them back to the office, give them them medication, wash the spoon (if the parent has actually supplied one), fill in the medication log, return them to class, find out they're doing PE, so need to go somewhere else, hope that nobody has had an asthma attack, broken a wrist, hit their head, cut themselves, phoned, rung the intercom or needed urgent attention in another way, then do the same for the second dose, then hunt down the child and parent in the playground at hometime (or stay behind for the afterschool club) to hand over the must be refrigerated medication find out they've gone home without it, repeat the next day, then find out it's been forgotten and is festering in a bag or has spilled everywhere, etc, etc. Then repeat it for anything up to 20 other kids, all on slightly different schedules (or exactly the same, meaning they need to be fetching kids all over the site at once).
This is exactly what it's like in our school. The only other extra bit I would add is that we also have to find a second adult who is willing and available to be the witness when the medication is given. It's part of our policy, so that we've got someone to double-check that the correct dose has been given and to cover our backs if we're later accused of doing something wrong.
Our school will administer antibiotics if 4 doses are needed but after witnessing the fuss that some parents make about even the most minor of things, it's a miracle that any member of staff volunteers to take on that role.