Opportuniteas - Grass Fed Whey Protein Powder Concentrate, Unflavored, 1 Ingredient, 1lb

This is the best tasting whey I have ever had and I have tried many through the years. It makes delicious shakes even with milk or milk substitutes only and very little sweetener (optional). It also makes phenomenal raw protein bars with peanut butter and maple syrup and some type of binder like ground flax or oats if you can tolerate them or whatever. I ordered this based on reviews. Being from Wisconsin originally, I know the dairy there is some of the best in the nation. I was pleased to support Wisconsin farmers.However I ended up taking advantage of this seller's money-back-guraantee and requesting a refund. Why? I noticed a significant uptick in migraines after I started to take the whey protein. Is it the amines -- perhaps glutamine or histamine or even MSG created in the manufacturing process? Or something else entirely? I don't believe it is a dairy allergy because I can drink plain grass fed bovine milk until the cows come home with no problem (forgive the pun).I don't eat much meat because the quality and freshness of meats in all the grocery stores around here is some of the worse I've ever seen (think warehouse vacuum-packed), and I recently got food poisoning from chicken (government states that 30-100% of chickens in grocery stores are contaminated with campylobacter). I wanted whey to work since it's such a phenomenal source of protein/amino acids. If I ever figure out what the problem is and resolve it and find I can eat whey without migraines, I will become a regular consumer of this brand.I rated the product 5 stars based on its merits and not my personal experience due to health issues. I definitely recommend this seller as well for their amazing customer service!