With which command can you forbid strength 2 potions or general items?

How can I forbid strength 2 on my server in Minecraft?
And although I have a Minecraft server and would like to know how to ban it there can be made the strength 2 potions or prohibit the drinking no effect comes how do I do that because jmd hunch?

With which server console do you make the server?

Either remove plugin or crafting recipe and clear the item from all.

You need a plugin for a spigot server

You can make a command block with a glock or repeat in the command block and / effcts @a clear