Invokana, a medicine that is prescribed for diabetes patients is so common and needed that you can easily find it anywhere. For example in pharmacy, in places which sell medical devices, in big or small markets, even in cosmetics places.
Although the medicine is covered by insurance people mostly prefer buying Invokana online. Invokana can be found in printable coupon form as well. Moreover, for whom just want to try and see if that works on them, Patient Assistance Programs (PAP) offers free sample. You can check the prices per pprescription
Do you need prescription?
No, you don’t. Since you can buy the medicine anywhere, you don’t need prescription or any document. But it doesn’t mean that you can take Invokana without seeing a doctor.