GlucoZenith's official site is not fully consistent about its own guarantee length: one section states 60 days, while the guarantee image and FAQ elsewhere on the same page state 180 days. We recommend confirming the exact current terms directly at checkout before ordering, and saving your confirmation email as a record of whichever terms you're shown.
Contact GlucoZenith's official customer support directly — not this website — with your order details, within whichever guarantee window is confirmed at your time of purchase.
Calendar your deadline the day your order arrives, using the shorter of the two published figures (60 days) as a conservative estimate until you've confirmed otherwise.