Client spelled the following words:

Keflex
Pyridium
pyelonephritis
Bactrim
Percocet
Zofran
Doxycycline
polycystic
cephalgia (actually a proper noun)
saline
compazine (also a proper noun)
benadryl (another proper noun)
Tylenol
syncopal
Nga
EKG
orthostatic hypotension
bradycardia
syncope
Propranolol
Mylanta
Docusate
Phosphate