Yes. There are lot of people more inclined to bring over old d20 rules than actually reading the 5e rules here...
There's no general rule that potions require concentration.
Only if the potion references a spell, and that spell requires concentration, and the potion description doesn't explicitly negate this, do your potion require concentration.
I'm sure there is such a potion to be found somewhere in the official published material, but as of right now, most (if not all) official potions
do not require concentration.
Which brings us back to why I resurrected this thread: "Potion Miscibility - does the game need it?"