I like flaxx seed oils as mine has 53g omega3 per 100g. This monday I worked on my chest a little too much I guess and after that my triceps, both heavy. My elbows almost killed me later that day as the pain was horrible. I bumped the flax up fromn 30g per day to 50g and on the wednsday the pain was gone. This is not what has happened before as I have had sore joints quite a few times before.
My tip would be these:
If you have joints that easily goes uts and starts aching after a session, then do not work triceps after chesst and the elbow stress will be very high.
Use c-vitamine 2-3g per day, bnut not too muuch as you will loose water and from that you might get mopre pain or injure yourself.
Use omega3, fishoil or whatever that will give you the o3.
If joints are very bad and the pain wont go away, then take some time off as you need the rest. Your body is beaten and need to rest for a while.
When doing chest, shoulders and tricepsmovements always start with 3 light sets for triceps. I go with pressdowns 3 sets with a lot of clothes on.
Good luck