You really don't want to know the answer to that one.
Yea, luckily my son has tolerated the lariam pretty well, but has been living with 'intestinal' upset pretty much constantly for the last 2 years. There's no sense in getting rid of the parasites/bacteria that causes it until he leaves the area, since he will just get it again from eating/drinking.
Is Lariam the big red horsepills? I've taken anti-malarial drugs for about a month on different occasions but don't remember the name. Also don't remember being warned of any side effects. After a port visit to Mombasa in 1985 a sailor on one of the ships in the battle group died of malaria. Wasn't caught even though they must have expected it since we were given the medicine.