I wouldn’t know firsthand. Sorry.
Discovering that flaxseed is the number 3 ingredient in Huel played a big part in my decision to opt for the custom recipe approach I’ve taken.
Flaxseed is way down at only the number 8 ingredient in the base powder of my “Schmuel” recipes. I find that for me personally, 8 is a much more manly number than 3 ;¬)
But as they say on the internet — YMMV.