Is it true that ingesting a snake plant/ mother-in-laws tongue can make you mute?

Entire plant is mildly toxic... This plant is sometimes reported as non-toxic, based probably on its use as a medicinal plant by herbalists in some parts of the world. It has been used as a remedy for hemorrhoids and intestinal parasites, for instance. Studies of Sansevieria trifasciata 'Laurentii" and S. thyrsiflora were conducted during the 1970s. In those studies, plant material was administered to rats and mice by various means. While the doses administered were high - ten percent of body weight - the investigators found that significant numbers of the rats and mice died. Other investigators report finding saponins in Sansevieria, and it seems likely that in extremely high doses these could cause the deaths reported in the studies. Most of the human ingestions of this plant that have been reported have not resulted in any symptoms. Thus, it appears likely that the plant is generally harmless in low doses. Ingestions of large amounts may cause nausea, vomiting, and other distress in the digestive tract, probably as a result of saponins