No, there is no known potion that can simulate death for a short period of time. Mimicking death can be dangerous and should not be attempted. It is important to seek help from medical professionals if you have concerns about your health.
The potion Juliet drank to appear dead was called a sleeping potion, which Friar Laurence gave her to make it seem like she was dead so she could avoid marrying Paris.
He gives Juliet a potion will make her seem to be dead on the wedding day.
He advises her to take a potion which will make her seem to be dead. Then when she wakes up in her tomb, Romeo will come to rescue her.
She threatens to kill herself, so the Friar says that he can give her a knockout potion which will make her seem dead for a couple of days, and then she can come back to life (and get together with Romeo)
Juliet is hesitant towards drinking the potion as she questions her trust for Friar Lawrence. She is scared that it may really kill her. She is also worried that when she wakes up she may not know where she is and that she will be driven insane lying next to her ancestors skeletal remains.
He makes Juliet drink a potion and will keep her asleep for 48 hours so that she will seem dead to the people in her family.
In the end of the scene, Friar Lawrence gives Romeo a plan to reunite with Juliet by faking his own death and then running away together once he is safely in Verona. This plan involves taking a potion that will make him appear dead for 42 hours and then sending a letter to inform Juliet of the situation.
Proffesor Moody, but it was Barty Crouch Jr. using a polyjuice potion to make himself seem like Mad-eye. They catch him in the end.
seem to foreshadow dead
Applied phlebotinum. In other words, a substance which doesn't really exist but makes the action of the plot possible. There is no real substance which can make you appear to be dead (including lack of pulse or colour) for exactly 42 hours.
You can make a short story seem longer by incorporating detailed descriptions, adding more characters and subplots, and expanding on the internal thoughts and feelings of the main characters. Pacing the narrative and using rich language can also create the illusion of a longer story.
Friar Laurence gives Juliet a potion at the opening of Act 4. It is the only way she can avoid being bigamously married to Paris. It is not a poison, however, just a Mickey Finn designed to knock her out for a couple of days.