Any food that contains carbohydrates (starches and sugars) raises your blood sugar. Most vegan meal replacement drinks are relatively high in carbs, which is why I prefer keto meal shakes. Unfortunately, keto meal replacement shakes are usually not dairy-free and thus not vegan-friendly. The good news is that plant protein doesn't raise your blood sugar the same way carbs do. So don't worry about how many grams of protein your shake has.