Is The first person to drink the poisoned wine Gertrude?

Yes, Gertrude is the first person to drink the poisoned wine in Shakespeare's play "Hamlet." In Act 5, Scene 2, she unwittingly consumes the wine that Claudius has poisoned, intending it for Hamlet. Gertrude's death serves as a pivotal moment in the play, highlighting the tragic consequences of the schemes and betrayals among the characters.