Here is the Health Canada site giving drug warnings about Larium...AKA Mefloquine:
http://www.hc-sc.gc.ca/dhp-mps/medeff/advisories-avis/public/_2005/lariam_pa-ap-eng.php
Two key points I will highlight, as does Health Canada:
1. Do not take 'Lariam' to prevent malaria if you
have or had depression
have had recent mental illness or problems, including anxiety disorder, schizophrenia (a severe type of mental illness), or psychosis (losing touch with reality)
have or had seizures (epilepsy or convulsions)
are allergic to quinine or quinidine (medicines related to 'Lariam')
2. If you use 'Lariam' to prevent malaria and you develop a sudden onset of unexplained anxiety, depression, restlessness or irritability, or confusion (possible signs of more serious mental problems), or you develop other serious side effects, including a persistently abnormal heart beat or palpitations, contact a doctor or health care provider. It may be necessary to stop taking 'Lariam' and use another malaria prevention medicine instead.
This was known in 2005.
If you were not completely honest on your questionnaire (which I know was done in 2005) before you got the meds, or did not report adverse symptoms while on the meds, then you should not be surprised how the government lawyers will present the case against you.