I'm going to assume the background here is that you work on a floor that is not an ICU, and are a relatively newer nurse, and maybe have taken ACLS but don't have people coding on you weekly or anything. I would guess that you basically want to know what other meds might need to be made available so you can help procure them, or so that you can give meds in a code under someone's direction. That's fine. Here goes.
Also, we'll clarify code blue. In most hospitals, a code blue is classified as a cardiopulmonary arrest. If someone is breathing agonally on the floor and needs to be intubated, they have to call a code to get the appropriate resources assembled in one place to intubate their patient, otherwise their patient would be dead before someone competent showed up. So the OP has probably seen rapid sequence intubations for respiratory distress or agonal, etc. that have been classified as codes.
Intubation meds. In the drawer on the code cart for us, but check with your institution. Basically a sedative of some kind (Etomidate, propofol, versed) and a neuromuscular blocking agent of some kind (Rocuronium, Vercuronium, Succ). Typically Versed is out on the floors because controlled substance, more difficult to get. You should not be pushing these drugs unless you are trained in moderate sedation and do it on your floor. an ICU nurse should respond to codes, either she or anesthesia should typically push these, but again, we're kind of on the clock here, so you're basically allowed to push everything pretty quickly. Very important to have IV access. While someone starts compressions, flush their IVs, by the time the code team arrives you'll at least know what's functional and if you need new lines.
In the case of a cardiac arrest
Amiodarone 150/300mg IVP, Epinephrine- slam, Magnesium Sulfate- you can push in Torsades but that's possibly the med I'd be least likely to slam of all my code options, Bicarb, as fast as your little fingers can push it out of the bristajet, D50 occasionally, calcium acetate, atropine, lidocaine bolus, I think vasopressin is going out of style with ACLS so expect it less during an actual code blue. We give a lot of NEO either immediately post RSI for the resultant hypotension or the hypotension when/if we get ROSC