As long as the bottle says it safe for fish, plants, invertebrates etc, it’s okay.
It’s generally believed that when it comes to bottle bacteria, there is now way to over dose the tank.
full disclaimer, I’m not a chemist or biologist so I can’t back up that claim.
one thing I will point out is that as your bacteria develop, it’s develops on surfaces in your aquarium. On plants, in gravel, on rocks, in your filter media and so on. So if you do add the bottled bacteria, add it AFTER a water change, because you’re adding it in a liquid form.
if you add it before, you ending up water changing the bacteria down the drain before it establishes on the surfaces of your tank.