Sangel 180 Capsules By Viker One Bottle

I bought this product from a retail store last year and the powder in the capsules is black. Then I bought another two bottles this year, and the powder is grey. I called the manufacture in Vancouver, they said it was 'overcooked' last year. The color of the product may change depending on the temperature during the extraction...And they won't accept a return if the bottle is opened. STAY AWAY FROM THIS PRODUCT!