Potions as an action make them useless.
What is the point of using the potion in combat in a situation where the next enemy blow will take more life than you managed to heal.
It is one of the most popular homebrews for a reason.
Healing in 5e was weakened to the ground then it is no longer 3e times where cleric was essential.
Cleric shouldn't be a mandatory character. I would not like to have one slot in the team permanently blocked.
Why do a lot of people forget Armor Class? The point is that unless you're really unlucky, your characters shouldn't be getting hit every round... Or unless you're a squishy mage who fails to cast defense spells to increase your survival chances. But, aside from that, I get that many people do Potion Bonus as opposed to Action. That one homebrew isn't breaking things. As I said, it's ALL the homebrew combined.
I do sometimes wonder just how many DM's ACTUALLY allow Bonus Potions. Maybe I should look it up since everyone is saying it.
I'll start adding links here:
https://www.reddit.com/r/dndnext/comments/k3vxw8/should_drinking_a_potion_require_an_action_or_a/https://dmdavid.com/tag/rethinking-potions-as-a-bonus-action/https://blackcitadelrpg.com/drinking-potion-5e/https://www.dndbeyond.com/forums/du...only/76374-using-potions-while-in-battle