I got out of the field because of nasty attitudes, but I would never recommend someone go against what their vet is telling them to do for a sick animal. You can't examine the animal yourself so you just don't have enough info to know what's best.
You believe everything a vet says do you? Here's a great example for you. I breed reticulated pythons (very large snakes) as a staple of my living- one starts to push at the front of his cage (breeding season, males do this sometimes), and rips his face open. It gets infected rather quickly, so I- like every other person without much knowledge on treating it - go to the vet.
9/10 vets will do the following:
Swab it with antibiotic, flush it, pull the cheese/puss out.
Prescribe Baytril.
If the snake sneezes. I take it in. Must be a respiratory infection. They just... give Baytril.
Here's the problem, 9/10 vets will just prescribe something without actually doing the leg work in a "hope" that their random stab in the dark fixes it. I've seen animals come out with severe burns and bad scaring from using Baytril. I've seen animals DIE from using Baytril. I've watched animals wither away and die because a vet is too lazy to bother to order a full culture done, to test for everything and prescribe the right meds for that specific bacteria. I've watched them give antibiotics for viral/fungal infections.
Do you know why I tell people to go against their vets? Because 9/10 the vet is doing what is best for his wallet and his pocket book, if he can tell you over the phone how to treat your animal, he makes no money, but if you have to come back a few times and try 5 different medications- he makes more money.
I don't need to examine the animal head on to determine what might be best for the animal. Any vet/vet tech worth his/her salt knows that stress is a huge HUGE contributing factor to sickness in a lot of animals, and how much it amplifies and makes things worse. The best bet is to usually do as much as you can at home, where the animal is comfortable, and so smaller less invasive treatments than to drag it to a vet and have it pumped full of XYZ. Animals have good immune systems, and are strong- they can make comebacks from some pretty nasty stuff...
Now if your vet does the cultures, finds something, and is proactive about actually being of help- then I'm all for you following that vets advice, but most times, that simply isn't the case.