Shook my sema vial before every shot 😱

I was not instructed not to shake the bottle. I shook it every time to make sure it was properly distributed in the solution.

Recently found out that is a big no no! Had a 8 week supply and didn't feel like it was working like the brand name pens I used in the past.

Just about to start a new vial and I am wondering if it will probably be more potent?