We're in the process of a making an herb tincture for headaches. Peppermint essential oil applied topically is a great pain reliever. I use it on muscle soreness, on my hips during menstrual cramps and especially on my pulse points for headaches! I add a little lavender oil to mine because it also helps with headaches. Try Frugally Sustainable for some herbal tinctures. I can't give any advice on teas for pain relief though. Some peppermint tea would probably be good for headaches just because peppermint is really good aromatherapy for headaches.