I did try gravol many, many moons ago for traveling with a cat (back in the 70's) I didn't find it made him drowsy and certainly not drowsy enough to shave.
Oops, sorry don't have any advice for you.
What are you feeding her now, any grains?
Cat maid to:
Jasper, male Ragdoll ?? (approx 10 yrs)
Sweet Pea, female silver tabby DSH (approx 8 yrs)
Rose semi feral, a cpietra rescue, female tabby (approx 7 yrs)
Puddles RIP (1996-2014
Snowball RIP (1991-2005)
In a cat's eye, all things belong to cats.-English Proverb
“While we are free to choose our actions, we are not free to choose the consequences of our actions.” Stephen R. Covey