What we build on.
Akin and colleagues studied local heat in a randomised trial. Jo and Lee’s review covered six studies of primary period pain, that is pain without a diagnosed underlying condition. It found support for relief, but several studies were small and had methodological limitations. Results for heat as a form of treatment do not automatically document the effect of a particular product.
Akin et al. (2001) → · Jo and Lee (2018) →Research points to an effect on pain signals and less muscle tension as possible explanations. The studies do not settle the whole mechanism behind the relief, and the results do not automatically apply to all types of pain.
Jo and Lee on possible mechanisms and limitations →The EU rules for medical devices set requirements for CE marking, documentation and sober product claims. When purchasing, the information must apply to the specific product.
CE marking → · Medical devices in the EU →About the publisher
Nicolai Bjerknes Slinning took part as a Norwegian expert in ISO/TC 283/WG 10, the working group that developed ISO 45010:2026, and is a member of the Norwegian standards committee SN/K 551. The handbook is Sydera’s own guidance. It is neither published nor approved by ISO or any national standards body.
Sydera is part of STÖ Group. The group has commercial interests in products for menstruation and pain relief. Sydera also offers HSE Scan, which is clearly marked as our own service in the handbook. The handbook describes needs and different types of solution. The choice of product and supplier lies with the organisation and the user.
This is general knowledge and suggestions for workplace arrangements. Individual assessment and treatment must be considered by qualified health professionals. The handbook must not be used to choose treatment for an employee.