Here's a few-
Coumadin-Check your PT/INRS
Narcotics (Morphine, Oxycodone, Hydrocodone, Fentanyl, Dilaudid) Just be aware of last time given, use the least amt needed for relief, IE don't give oxyIR when 2 Tylenol will suffice. If you find yourself pushing limits with a Pt (hip/knee pts seem to go through a lot- espically before psychical therapy), the MD needs to be consulted. The patients pain is whatever he/she says it is. Don't judge, Let the MD decide what to prescribe.
Non-Narcotic Pain meds-APAP, Motrin, Naproxin
Heart meds-Digoxin, B-Blockers, Check your HR and BP's
Diruetics-Lasix, HCTZ-try to give early as possible, else pt is up all night peeing.
ACE-Inhibitors, again HR/BP
Various psych meds-Prozac, etc, anxiolytics-benzodiazapine class, Sleeping pills (ambien, lunesta), rarely a few anti-psychotics
Phenobarb, Dilantin, Depakote (need levels for all these), neurontin seems to be a biggie for neuropathic pain nowadays, as well as seizure control.
Don't forget your bowel drugs, -especially- if pt on narcs-sennakot, MOM, psyllium, other laxatives and bulk-formers.
Anti-Nausea drugs-compazine, phenergan, reglan, (also biggies with narc pts)
Probably a few other common ones, but you'll definately see these a lot. When in doubt, check your drug book, don't be too proud or afraid to take a extra minute to look something up or call pharmacy-Don't forget to check ROUTE, IV instead of IM seems to be big error point. Also, some orders may be written for 600mg and say nothing about the # of tabs- and pharmacy sends 200 or 300mg tabs. Just take your time and do your checks.