[perspective1]

Exactly this. It's mostly just the ivory-tower kind of docs that say "acetaminophen" over "Tylenol." If you use the generic of something like Zosyn "Pipercillin/Tazobactam" you'll firmly go in the weird category. Same with most (but not all) antibiotics. The normal parlance changes from generic to trade with each drug and even region of the country.

The actual medical shibboleth is knowing your dose and dosing interval, total doses over time period X, dose adjustments, that gives doctors the information they need about your drug. Basically just know your history down cold. You'll be forgiven for mispronouncing med names, using the trade or generic name when the other one is more common, etc. Nobody cares. All (yes, all) doctors have a specific framework when it comes to history taking, and it's easy to get. And it's easy to tell when people don't get it. It goes something like, "I (or pt Y) have med problem x, y, z. Recently, I noticed u happening. I tried a, and then b but neither worked." Boom. You're now miles ahead of everyone else seeking care, you're not wasting time while the doc tries to organize and digest everything you're saying, it's that simple.