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Is Veritaserum used in Wizarding Court to determine if a suspect is guilty or not/telling the truth?

Would there be a general list of questions asked to the truth-serum-affected suspects?

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J. K. Rowling's old website answers this exact question in the FAQ.

Veritaserum plays a big part in finding out the truth from Mad-Eye Moody in book four. Why then is it not used for example in the trials mentioned in the same book? It would be much easier in solving problems like whether Sirius Black was guilty or not?

Veritaserum works best upon the unsuspecting, the vulnerable and those insufficiently skilled (in one way or another) to protect themselves against it. Barty Crouch had been attacked before the potion was given to him and was still very groggy, otherwise he could have employed a range of measures against the Potion - he might have sealed his own throat and faked a declaration of innocence, transformed the Potion into something else before it touched his lips, or employed Occlumency against its effects. In other words, just like every other kind of magic within the books, Veritaserum is not infallible. As some wizards can prevent themselves being affected, and others cannot, it is an unfair and unreliable tool to use at a trial.

Sirius might have volunteered to take the potion had he been given the chance, but he was never offered it. Mr. Crouch senior, power mad and increasingly unjust in the way he was treating suspects, threw him into Azkaban on the (admittedly rather convincing) testimony of many eyewitnesses. The sad fact is that even if Sirius had told the truth under the influence of the Potion, Mr. Crouch could still have insisted that he was using trickery to render himself immune to it.

Rowling has confirmed that she's still sticking to this old answer on her website:

Why isn’t Veritaserum used in interrogations?

It is, but skilled wizards can avoid its effects by using antidotes and charms. A gifted Occlumens could also resist Veritaserum.

Please see also the further quotes offered for the previous question Why didn't Dumbledore insist on questioning Sirius Black under Veritaserum?

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  • Nice find! I remembered reading this but couldn't remember where.:) – CandiedMango Oct 8 '15 at 13:42
  • I didn't do this one because all the questions which it would have answered were already closed. – ibid Dec 21 '16 at 12:47

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