World Health Organisation (WHO)
http://www.who.int/

Heads of Medicines Agencies
http://www.hma.eu/index.html

European Medicines Agency (EMEA)
http://www.emea.eu.int/

Drug Information Association (DIA)
http://www.diahome.org

Medicines and Healthcare products Regulatory Agency (MHRA)
http://www.mhra.gov.uk

Food and Drug Administration (FDA)
http://www.fda.gov/

Eudralex
http://pharmacos.eudra.org/F2/eudralex/index.htm

Eudravigilance
http://eudravigilance.emea.europa.eu/highres.htm

Council for International Organizations of Medical Sciences
http://www.cioms.ch/

Annual Safety Reports: EU Clinical Trials Directive
http://www.wctn.org.uk/downloads/EU_Directive/Directive.pdf

Clinical Trials.Gov
http://www.clinicaltrials.gov

ISRCTN Register
http://www.isrctn.org

European Clinical Trials Database
https://eudract.emea.europa.eu/eudract/index.do

NICE
http://www.nice.org.uk/

British National Formulary
http://www.bnf.vhn.net/    

Medicines Control Agency 
http://www.open.gov.uk/mca/

ABPI
http://www.abpi.org.uk        

MedDRA
http://www.meddramsso.com

Electronic Medicines Compendium
http://www.emc.vhn.net/

Embase
http://www.embase.com/

PUBMED
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi

Medwatch
http://www.fda.gov/medwatch/

Medscape
http://www.medscape.com/

British Medical Journal
http://www.bmj.com/

Medicinenet.com
http://www.medicinenet.com/

Institute for Clinical Research (ICR)
http://www.icr-global.org

Pharmaceutical Research & Manufacturers of America (PhRMA)
http://www.phrma.org

European Generic Medicines Association (EGA)
http://www.egagenerics.com

British Generic Manufacturers Association (BGMA)
http://www.britishgenerics.co.uk

The Organisation for Professionals in Regulatory Affairs (TOPRA)
http://www.topra.org

Regulatory Affairs Professionals Society (RAPS)
http://www.raps.org

Pharmaceutical Information & Pharmacovigilance Association  (PIPA)
http://www.pipaonline.org.uk

Bulgarian Drug Agency (BDA)
http://www.bda.bg

Danish Medicines Agency
http://www.dkma.dk

Agence Française de Sécurité Sanitaire des Produits de Santé   (AFSSAPS)                       
http://www.afssaps.sante.fr

Bundesinstitut für Arzneimittel und Medizinprodukte (BfArM)
http://www.bfarm.de

Icelandic Medicines Control Agency (IMCA)
http://www.imca.is

Irish Medicines Board (IMB)
http://www.imb.ie

Norwegian Medicines Agency
http://www.legemiddelverket.no

National Medicines and Health Products Authority (INFARMED)
http://www.infarmed.pt

Swissmedic, Schweizerisches Heilmittelinstitut
http://www.swissmedic.ch

Australia: Therapeutic Goods Administration
http://www.health.gov.au

Canada: Health Canada - Health Products and Food Branch
http://www.hc-sc.gc.ca

Japan: Ministry of Health, Labour and Welfare
http://www.mhlw.go.jp/english

New Zealand: Ministry of Health
http: www.moh.govt.nz