Potion use adds damage for this turn
Reptile Trinket grants three Strength whenever you use a potion, and that Strength lasts for the current turn. It does not turn a single potion into permanent combat-long scaling. Time the use before the attacks that should receive the bonus.
This can change the value of a potion that has no direct damage effect. Fruit Juice still provides its maximum-HP increase, while its use can also trigger the Trinket’s temporary Strength. If you do not need the potion slot immediately, holding that bottle for an attacking turn can obtain both benefits together.
A potion used after the relevant attacks cannot increase damage already dealt. Likewise, a turn spent only setting up Powers may waste the temporary Strength even when the potion’s own effect is valuable. Compare whether delaying the use is safe before chasing the extra damage.
Entropic Brew can supply further consumables, but the refill is random and requires empty slots. Do not count on a guaranteed sequence of damage potions or an unlimited chain. The potion-timing guide separates a potion’s own job from the extra value a relic adds to using it.