You suffer from the Weakened condition.
Your maximum Hit Points are increased by +3.
The effects of this Elixir last until the next sunrise, you drink another Elixir, you consume an Antitoxin, or an effect removes the Weakened condition from you, whichever happens first.
This concoction is normally made as an Elixir, but it can also be prepared so that it can be administered via food or drink as a Poison. If you wish to apply it as a Poison, you must follow all the normal Poison rules, including brewing it with a Referee being present. You cannot use the Elixir version of this item as a Poison.