Anyone take caffeine pills on a regular basis? Any issues with that?

I’m thinking of taking no-doz in lieu of coffee. Reason being I feel I need the caffeine to function properly but often don’t know how much is too much (or how much I am actually consuming with all the coffee I drink). I thought maybe by taking the pills instead, it would regulate my intake so that I don’t get too much or too little caffeine at any given point during the day. Any advice?