I have recently been diagnosed with a propylene glycol allergy. Have found alternatives to some products but not others went off 3 meds due to PG. My doctor was very supportive and a PG site had some solutions. I have not found an alternative to my ibuprophen. I use it for headaches. Luckily my migraines are light and infrequent since I started taking a magnesium supplement about 15 years ago. Has anyone found a product other than aspirin powders to take for headaches?