Andrea Yates was on Haloperidol - same drug as Sheila had in her. "Whatever possessed the 36-year-old mother to commit these unconscionable acts remains murky. Depression and postpartum syndrome topped early speculation, but there has been little discussion about the possible effects of the powerful mind-altering drugs she was taking. Although Texas District Judge Belinda Hill issued a gag order concerning the case, family members have released disturbing facts about Yates’ psychiatric treatment that specialists say may account for her state of mind at the time of the murders.
During a two-year period, Yates was prescribed four extremely potent mind-altering drugs intended to help her through two episodes of severe depression that began after the birth of her fourth child. The first of these psychopharmacological cocktails included Haldol, an antipsychotic most often used to treat schizophrenia;"
http://www.whale.to/drugs/haldol2.html"Breggin continues: “Haldol is a very blunting drug. It’s difficult to come to any definitive conclusions with so little data about her state of mind at the time. However, Haldol is a drug that produces what can only be referred to as a chemical lobotomy that tends to make a person more docile and robotic.” "
" As Vickery puts it, “Look, if I give you a loaded gun and for whatever reason it’s likely that you’re going to shoot someone, then I’m an accessory before the fact of murder. Shouldn’t the drug company that’s encouraging doctors to prescribe a drug and is aware that these drugs cause adverse reactions be held responsible? No one can believe that a mother would do such a thing. It’s too horrible. But the fact is these people get completely out of touch with reality because of these drugs. Unfortunately, in most of the cases that I get involved with, we never know if the people committing the violence knew what they were doing when they did it because they also killed themselves.” "
This article is very interesting, I think.