This summary information comes from Fass and the risk from the report from Goodpoint.
Persistence. No data.
Bioaccumulation. No data.
Toxicity. No data.
Risk. See below
Fass environmental information for Stesolid (diazepam) from Teva (downloaded 2020-10-20).
Persistence: It can not be excluded that diazepam is persistent, as data are lacking.
Bioaccumulation: It can not be excluded that diazepam may bioaccumulate, as data are lacking.
Toxicity: No data.
Risk of environmental impact of diazepam cannot be excluded, since no ecotoxicity data are available.
Manufacturer has on fass.se stated that that data about the environmental impact is missing for the substance so that the environmental risk cannot be calculated. It is voluntary for manufacturers to provide information on the environmental impact on fass.se.
The levels of diazepam measured in Swedish waters are low and are not expected to pose any environmental risk, but diazepam is metabolized partly to oxazepam, which has been measured in concentrations posing a risk. Oxazepam has been detected in treated wastewater, surface water and drinking water in Region Stockholm. This means that the use of diazepam may contribute to the environmental risk and the substance is therefore included in Region Stockholm's table of pharmaceuticals with risk for negative environmental impact according to the environmental programme 2017–2021.
Diazepam is recommended in the Wise list. Environmental classification of pharmaceuticals is taken into consideration, sometimes with other environmental aspects, when selecting pharmaceuticals for the Wise list. When comparable pharmaceuticals are equivalent to medical effects, safety and pharmaceutical efficacy, environmental impact and price are considered.
Concrete proposals on how to work to reduce emissions of environmentally harmful pharmaceuticals on the list have been developed in close cooperation with the Stockholm Drug and Therapeutics Committee's expert groups. The action proposals were developed from an environmental perspective. The patient's best always goes first and several pharmaceuticals on the list are also included in the Wise list. However, for such pharmaceuticals, there may be measures that could reduce the environmental impact.
Concrete proposal for diazepam
Author: Health and Medical Care Administration, Region Stockholm