Some examples of biologically active forms of nutrients includes:
Vitamin D - Vitamin D3
Folic Acid - L-5-Methyltetrahyrdrofolate (5MTHF)
Vitamin B6 - Pyridoxal-5-Phosphate (P5P)
Vitamin B12 - Methylcobalamin
CoQ10 - Ubiquinol
Aiming to pick up supplements that contain nutrients in their biologically active form ensures we are buying good quality, well absorbed, easily utilizable supplements.