One COA proves the blend is pharmaceutical grade. A meaningful blend assessment requires separate identity, quantity, ratio, impurity and stability evidence
If you are considering starting B12 supplements, particularly at high doses, discuss this with your GP or a registered pharmacist, especially if you have existing medical conditions or take other medications
Jan/Feb 2020;41(1):67-71
Business Type Exporter, Manufacturer, Supplier Payment Mode Telegraphic Transfer (T/T) Related Products Explore Related Categories More Products From This Seller Seller Details Fuqiang Road, Futian District, Shenzhen, Guangdong, 000000, China Price Or Price Range 54.0 USD ($) (Approx.) 93.0 USD ($) (Approx.) Storage Instructions Store in a cool, dry place
If you buy it from online websites or forums that do not require a prescription, it might not be authentic or safe