If you are in combat or about to initiate combat, you gain a number of charges of Inspiration equal to 1 plus the Potion’s Tier. Any charges you gain beyond the maximum amount you can hold at once are immediately lost.
The level of the Enervated condition you are suffering from (if any) is reduced by -1 per Tier of the Potion, to a minimum of 0. If the duration of the Enervated condition is listed as until you finish a Short or Long Rest, this Potion only suppresses the level of the condition for 5 minutes, at which point the condition returns to full strength.
Drinking another Stamina Potion within 1 hour causes you to gain the Sickened 2 condition for 5 minutes, but otherwise has its normal effect.