"Garden of Life RAW Meal - Lightly Sweetened" has only 6 grams of sugar per scoop, and no stevia. But, it has a bazillion ingredients so there might be many potential things to kick off and MCAS reaction.
"Natural Factors Whey Factors - Unflavored" is just high quality whey protein without flavors or sweeteners. It mixes well and has a fairly neutral taste. It isn't meant to be a meal replacement, just a source of protein and amino acids. I use it every day mixed with oil, ground flax, vegetable juice, lecithin, and a superfood powder.
SunWarrior brand has some plant based protein powders that include at least one option for unflavored and unsweetened.
Oats (1/2 cup uncooked) are 130 calories. If you add a tablespoon of coconut oil you'll get another 100 calories. If you tolerate honey as a sweetener then it's 20 calories per teaspoon. I have oats every morning. I pour 1 cup of boiling water over 1/2 cup of oats, wait for it to cool, then put it in the fridge overnight so most of the phytic acid is broken down which allows for better nutrient absorption. If you tolerate milk then you could use that instead of water for an extra 8-9 grams of protein and additional nutrients.
I add oils to my diet to get more calories. One tablespoon averages 100 - 130 calories. I've found I need a mix of types such as coconut, olive, grapeseed, avocado, and sometimes walnut. I think the important thing is to include a mix of saturated, monounsaturated, and polyunsaturated.
And here's an MCAS tip to consider from Dr. Axe's web site:
Quercetin has also been shown to improve gut barrier function by sealing the gut because it supports creation of tight junction proteins. It also stabilizes mast cells and reduces the release of histamine, which is common in food intolerance. New studies have also shown its effectiveness in healing ulcerative colitis. Take 500 milligrams three times daily with meals.
