hi @Rainer - for what it might be worth - have you tried ginger for your headaches?
Mixing ginger powder with water has been reported as helping relieve patients suffering migraines.
Apparently mixing about an eight of a teaspoon of ginger powder with water and then drinking once a headache comes on has an effect within 30 minutes. I read that in How Not To Die in the chapter about Herbs & Spices.
Just sharing.