Is your product tested for heavy metals? Yes. All our products including the Marine Collagen product are third-party tested to meet the highest safety standards. Each batch is tested by independent, accredited laboratories and is confirmed to be free from heavy metals. Does it smell or taste fishy? Not at all. Cevitol uses ultra-pure 300Da marine collagen peptides that are virtually odorless and flavorless. It dissolves cleanly into water, coffee, or smoothies without altering the taste — no additives or artificial flavors included. Does it dissolve well in cold drinks or somoothies? Yes. Thanks to its ultra-fine powder form, it dissolves quickly even in cold liquids. You can easily mix it into smoothies, yogurt, or iced coffee without any clumping or residue.