After you have read stuff here for a few years you'll see that nothing is new or a surprise. Variation is the theme song and while interesting, it has no meaing which has been detected.

I find soluble aspirin to be the most effective option for me for shadows, although it takes 20 - 30 mins to take effect.

I often try to ignore shadows but after a while they get quite annoying and distracting so end up taking the aspirin. I can put up with them if I am not doing much but find them distracting if I have to do something important, or if I am trying to get to sleep.

For low level shadows I take 600mg and for stronger shadows I take 900mg (we generally have 300 mg tablets in Australia). Once the pain gets above a kip4 I find the aspirin is no longer effective. 

High dose aspirin (900 - 1000mg) was suggested by my doctor and there is some research valdity to it (although the research relates to migraine rather than CH).

Have sometimes had success with energy drinks, but results are variable. Sometimes it seems to work well and then othes not at all.

I have only tried oxygen a few times for shadows and didn't find it helped much. Works great for the strong ones though.

Thank you all for the advice.  This may sound rediculous, but it didn't occur to me to start over trying the things that didn't help with a typical cycle.  I have found some relief from a cold compress, but it takes a while to start and comes back later.  I'll have to try and mix things up, see if any combinations work better for me.

Thanks All!!