Description and traits. A Mandrake plant Whenever unearthed, the root screamed. The scream of a mature Mandrake when it was unearthed would kill any person who hears it, but a young Mandrake's screams would usually only knock a person out for several hours.

Is mandrake a narcotic?

But its powers are not only mythical: a member of the nightshade plant family, mandrake contains hallucinogenic and narcotic alkaloids.

How much mandrake is deadly?

As little as 3–6 mg is lethal for an adult.