Progressive Labs
Quadrix Tablets (Co-Enzyme Form of B12) Supports the Production
Vitamin B6 (from pyridoxine HCI and pyridoxal-5-phosphate) 46 mg, [as (6S)-5-methyltetrahydrofolic acid, glucosamine salt) Quatrefolic® 400 mcg, Vitamin B12 (as methylcobalamin) 1100 mcg
$20 – $30B12