You can also try
https://www.vitacost.com/vitacost-vitamin-b-12-methylcobalamin-5000-mcg-60-capsules-5
Alot of members use this , I use it myself you can buy it on line from Vitacost
Vitamin B-12 Methylcobalamin -- 5000 mcg - 100 Capsules
It's 14.49 but out of stock , see what I wrote at the end
Some us Zobaline , but it's expensive
This is the same thing
The only difference is the Zobaline has 200 mcgs of folic acid
So I buy the folic acid at the supermarket and crush it up and add it to the B-12
If you can't find the 200 mcg get the 400 mcg and cut it in half
The Vitacost brand is a capsule so just open it and pour the powder on the wet food
Has no taste, no need to crush it up
The Zobaline is 33.99 for 60 pills, too expensive
I saw a big improvement I'd say 3 months, could be sooner. One capsule a day.
Once you get your kitty better regulated the B-12 methyl will help
Vitamin B-12 Methylcobalamin -- 5000 mcg - 100 Capsules
I see they are out stock for the 100 capsules 14.49
Go to the drop down you will see 60 capsules for 9.44 that's still a good price even if you buy 2 bottles. Call them to see if they ship to the UK , but I think they do
https://www.vitacost.com