A Medicine Bottle restores 90-130 health without potion sickness. They are highly unreliable compared to other potions, and are only available in Hardmode and higher. They stack to 24.
One bottle of Vitamins produces three Medicine Bottles. This is 270-390 total health restored from one batch.
With the Medicine Bottles' rarity, don't use them as a primary healing component. Always carry a few on you, if you can afford them, for emergences. Just remember, their healing is highly unpredictable, ranging from 90, all the way to 130. Another thing to note is the small stack size. This makes them outclassed by even lesser potions in that regard.