The page describes mixing the drops into water. Coffee or tea is not mentioned.
What is known
Only water is mentioned as a mixer. Hot drinks may change taste, and the page does not discuss them.
A cautious approach
Stick to what the label and page describe. If you want to change how you take it, ask the seller or your pharmacist.
Educational note: This guide is for general information only. GlucoPril is a dietary supplement formulated to support healthy glucose metabolism and is not intended to diagnose, treat, cure, or prevent any disease.