Do I need a prescription for Lingo? December 09, 2025 15:28 No, you do not need a prescription to purchase Lingo. Lingo is available on our website as an over-the-counter glucose biosensor, or OTC continuous glucose monitor, and does not require a prescription to purchase. Related articles What glucose range does Lingo show? Who can buy an OTC CGM? How does a CGM work? How can I contact customer support? How do I sync Lingo with Health Connect™?