He is much more relaxed with the Bach flowers for stress and relaxation. I got the one especially for pets with no alcohol online. They used to sell Bach for kids with no alcohol at the pharmacist but now they have grape alcohol in the kids formula.
I put some on his ears last night as he has been meowing very loudly at night as well and to my surprise he was actually quiet after a few very loud meows. Maybe it's working for him but we will have to see that it's not a fluke.
I like meowing san. It relaxes me!