Obviously anything has to be coordinated with your onc but..
If you have migraine issues, feverfew herbal is supposed to help with that. Feverfew contains parthenolide which has anticancer/cancer stem cell properties as well as calming qualities..supposedly enhancing melatonin production. Available at
www.GNC.com
If common allergies might be an issue, Quercetin is supposed to help with that...along with anti-cancer/metabolism regulating qualities. I believe it is thought to help with diahrrea. Thought to increase absorption of certain nutrients and meds. Available as supplement but found naturally in onions.
There is some suggestion that Avastin, like many therapies, might be better tolerated if given lower dose/more frequently.