100 mg caffeine tablets are available over-the-counter in Canada. Energy drinks containing 300 mg of caffeine are also available. (unconfirmed) (thanks N)

According to I.D.Drinks, the Danish government allows a maximum of 150mg of caffeine per liter of drink for prepared drinks, except coffee. The government claims that over 150mg/l is 'dangerous'. The maximum level in most of Europe is 320mg/liter. (unconfirmed) (thanks IDD) Red Bull is reportedly banned in Denmark. (unconfirmed) (thanks D)

We have been told that pure caffeine is not available over-the-counter in Germany. It is illegal to sell in pure form unless you have special permission required by a medical condition. (unconfirmed) (thanks JL)

An Erowid reader reports that: "some shops will not sell drinks with high caffeine content to people under 16, such as energy drinks. The maximum caffeine content for any drink is 320 mg/liter. Caffeine pills can be bought at phamacies and smartshops, although the legal minimum age for purchasing over-the-counter drugs is 16. This is rarely enforced though. Smartshops will not serve any customer under 18, no matter what purchase is made." (unconfirmed) (thanks T) (last updated may 15, 2009)

Norwegian law allows a maximum of 32mg of caffeine per 100ml of drink. In 2009, energy drinks such as Red Bull became legal in Norway because of trade agreements with Europe. Despite not being part of the European Union (EU), Norway is part of the European Free Trade Association (EFTA) and European Economic Area (EEA). Since the EU changed its regulations to classify Red Bull-like energy drinks as food, members of the EFTA and EEA now must accept EU regulated foods and drinks as trade items. (thanks Y) (last updated Oct 14, 2009)