In Great Britain, it is illegal to kill, injure, harm or sell adders under the Wildlife and Countryside Act 1981.
The same situation applies to Norway under the Viltloven (The Wildlife Act 1981) and Denmark (1981).
The common viper is categorised as 'endangered' in Switzerland, and is also protected in some other countries in its range.
It is also found in many protected areas.
This species is listed as protected (Appendix III) under the Berne Convention.

The International Union for the Conservation of Nature Red List of Threatened Species describes the conservation status as of 'least concern' in view of its wide distribution, presumed large population, broad range of habitats, and likely slow rate of decline though it acknowledges the population to be decreasing.
Reduction in habitat for a variety of reasons, fragmentation of populations in Europe due to intense agriculture practices, and collection for the pet trade or for venom extraction have been recorded as major contributing factors for its decline.
In Great Britain, it is illegal to kill, injure, harm or sell adders under the Wildlife and Countryside Act 1981. The same situation applies to Norway under the Viltloven (The Wildlife Act 1981) and Denmark (1981). The common viper is categorised as 'endangered' in Switzerland, and is also protected in some other countries in its range. It is also found in many protected areas. This species is listed as protected (Appendix III) under the Berne Convention.
The International Union for the Conservation of Nature Red List of Threatened Species describes the conservation status as of 'least concern' in view of its wide distribution, presumed large population, broad range of habitats, and likely slow rate of decline though it acknowledges the population to be decreasing. Reduction in habitat for a variety of reasons, fragmentation of populations in Europe due to intense agriculture practices, and collection for the pet trade or for venom extraction have been recorded as major contributing factors for its decline.
Vipera berus