Coffee (Brewed From Grounds) (1 Cup (8 Fl Oz)) and Collagen Peptides Advanced (Vital Proteins) (1 Serving)

Drink the coffee black or use only unsweetened additions; avoid sugar, syrups, flavored creamers, and sweetened plant milks.

Check the collagen peptides label for added sugars, maltodextrin, dextrin, or “natural flavors”; choose an unflavored, single-ingredient product if possible.

Have the coffee and collagen with or after a meal containing protein, fat, and fiber, such as eggs with avocado or plain Greek yogurt with nuts.

Try a smaller serving of collagen or split it into two doses to see whether the amount is contributing to the rise.

Avoid drinking coffee on an empty stomach, especially in the morning, since caffeine can raise glucose for some people even without carbohydrates.

Take a 10–15 minute easy walk after drinking it and compare your glucose response across several days to identify the most effective change.