Does anyone use protein powders to put weight on. Looking at some, they contain very few carbs.
From the cornucopia that provides most body building condiments
https://www.hollandandbarrett.com/t.../protein/how-much-protein-do-you-really-need/
I have seen it recommended that Low Carbers can go up to 1 gm/ kg a day, and body builders can go up to 1.5g /kg.
Remember that protein converts into glucose at about half the rate of crbohydrate especially when using a ketogenic diet, so protein can spike your sugar levels too. Insulin users often find they need to increase their bolus dose accordingly, so I believe, but I am not an insulin user.
As with any diet related activity, use a meter to test before and after numbers and decide accordingly. Again, the protein spike occurs later than the carb spike, so testing at 3 hrs after taking it will probably be a closer value.
But there is a conundrum, thrown up by research in the last couple of years, that eating fat does not necessarily make us fat or put on weight, but it helps to leave us satiated. Eating protein does not provide saeity, but increases weight and muscle. In my case, I have found Low Carb Higher Fat initially lost loads of weight but I plateaued at my BMI at 21 and have not budged much either way since. Increasing fat does not raise the scales, neither does full on protein meals. But increasing carbs also increases girth and weight again. Funny, that.