preguntas about Veritaserum...

From my extensive research, I have not come across any specific instances of these things happening. In the case of the signer, it can be assumed that the secrets will be told through whatever means of communication allows him/her to communicate dicho secrets. As for the baby, there is virtually no reason to administer Veritaserum to a baby, as they don't understand what is going on around them just yet. For a wizard at least fourteen years old, three drops will have them spilling all their secrets. That same dosage could do irreparable harm to a baby. And I am fairly certain that a lower dosae is not as effective.

Well for Veritaserum, it would, as I would think, force the drinker to tell the truth no matter what, but what would anyone want from a baby that it would know in the first place? A baby probably doesn't even know what was going on at the questioned time. As for people with dissabled speech, they're wizards for peats sake! Don't tu think that someone could have cured them por now? If Skele-grow exists in their world I think they can cure that....

Great question! I think neither the baby nor the mute would speak.

The potion's effect is to tell the truth, no matter how much tu wish to conceal it. But I don't think it matters what way of communication tu use. The mute would use their hands, as tu said, as for the baby... first one would have to ponder if the infant can undestand questioning in the first place. And I don't mean the idea of questioning, but merely the words used -it would depend on how old are they and how much language do they comprehend, even before being able to speak it. (And por the way, did tu know that "infant" means "the one that doesn't talk" in latin?).

If there was a potion that allowed tu to use words tu don't know, o something like that, maybe a baby would speak. But since that's not the effect of Veritaserum, I'd say neither the baby nor the mute would utter a word.