Most important, commonly used meds in real world?

Lasix, prednisone, coumadin, lisinopril, synthroid, vicodin, digoxin, insulin, metformin, norvasc. These are the ones I can think of off the top of my head.

For pain... Dilaudid, morphine, percoset, toradol
for GI... protonix, prilosec, pepcid
B/P...atenolol, HCTZ
for nausea.... zofran, inapsine, phenergan
insulins.... glargine, regular, novolog

Good Luck!!

lantus insulin
lopressor
vancomycin
zosyn
nexium
levaquin
vasotec
colace
MOM
benedryl
ambien
trazadone
celexa
statins

good lists

I would add

ranitidine
miralax

Anxiety: zanex, valium, ativan

Respiratory: singulair, albuterol, atrovent, Advair, Spiriva, mucomyst

Diurectic: Lasix

BP: Toprol, lopressor

Potassium (K+): (to replace lost K+ during the admin of the Lasix or HCTZ or from the alcoholic that dehydrated him/herself!)

Know your IV fluids:
0.9% Sodium Chloride (or NS; normal saline)
0.45 Sodium Chloride (1/2 NS)
Dextrose 5% with water (D5W)
Dextrose 5%, 0.45% Sodium Chloride with 20mEq of Potassium Chloride (D5 1/2NS with 20 KCL).
{These r the most common ones I give.}

Another IV antibiotic: flagyl

Good luck!