i got meslf an elbow flava last year doing west side story (a fair swap i say!) cos i was jumping into the middle sidepull 30+ times every session for a few weeks, so got some kind of strain/injury to where the tricep terminates at the elbow. it hurted when i was straight arming of jugs and locking stuff. I chose to take it steady and iced it every night. now almost 10 months later it feels ok and only really hurts if i've been doing any badass locking - i just built a woody and its feeling fine - not noticed it of late really. However the fact that its going to take me a year to recover might be indicative that i did something wrong ! (incidentally i tried total rest for 2 weeks in the summer and i was no better).
do lightish curls concentrating on LOWERING the weight NOT lifting it.do 3 sets of 10 on each arm. resting inbetween. this strengthens and builds eccentric (responsive) control in the antagonists and stretches the climbing muscles: v. important.
I wouldn't totally write off Glucosamine, it works nicely for my knees, and was recommended by the Prof at Gobowen orthopaedic ward who treats all the pro footballer knee injuries.g
if this is the same as Brachialis tendonitis (as mentioned by TH) then lcoking off A LOT is one of the primary causes (i can hear dave laughing now...).