If a character has Delay Poison cast on them before being hit by the poison, my understanding is that both fortitude saves are delayed until the Delay Poison wears off. If a character is hit by Drow ...
The description of Drow in the SRD states: An opponent hit by a drow’s poisoned weapon must succeed on a DC 13 Fortitude save or fall unconscious. After 1 minute, the subject must succeed on ...
Specifically looking at poisons of type Injury: Injury: These poisons are primarily delivered through the attacks of certain creatures and through weapons coated in the toxin...One dose of ...