I read about the flax seed in raw form being toxic . They say to boil it first before adding to food.
It said that flax seed contains cyanogenic glyscosides that release toxic hydrogen cyanide.
That is from felinenutrition.org.
Can anyone here speak to this statement? I wush I would have read this before I added small amounts on my cats food.
Also psyllium husks should only be used short term as its effectiveness wears off.
Is your kitty getting enough water in their diet? I read aleo vera juice helps with constipation. I have never used it. Coconut fiber and olive oil were also mentioned. If its occasional constipation one of these mught help. If cronic you might want to invole your vet.