Sometimes I also have problems with gf and df supplements. Not all gf products are really gf. FDA labeling allows up to 50 ppm gluten in products to carry the gf message. Some of us are so sensitive to gluten we cannot tolerate that tiny amount. Some supplements have mold toxins or pollutants that upset my body. I have to try any supplement I buy and note any reactions.
Coffee and decaf both caused problems with sleeping.