Persistence. Glimepiride is potentially persistent.
Bioaccumulation. Glimepiride has low potential for bioaccumulation.
Toxicity. Glimepiride has low acute toxicity.
Risk. See the report from GoodPoint.
This summary information about hazard comes from Fass.
Fass environmental information for Glimepirid Sandoz (downloaded 2022-03-31). Environmental information for glimepiride is produced by the company Sanofi AB for Amaryl, Amaryl® and Glimepirid Winthrop.
Persistence: "Ready degradability: Test showed < 10% degradation in 28 days (protocol ISO9439) ... Glimepiride fails to pass the criteria for ready biodegradability which justifies the phrase “Glimepiride is potentially persistent.”
Bioaccumulation: pH 7 (20°C): log Kow 2.14 (Shake Flask Method at pH 4, 7 and 9).
Acute toxicity: There are data for 3 trophic levels, most sensitive algae (Desmodesmus subspicatus) EC50 610720 microg/L.
PEC/PNEC is based on sales data in Sweden in year 2018. PEC/PNEC = 3,3 * 10-6 which gives the risk insignificant.
Glimepiride has not been detected (detection limit 10 ng/L) in analysis of untreated or treated wastewater from a large number of wastewater treatment plants in Sweden and abroad. However, concentrations of up to 39 ng/L in purified Swedish wastewater are reported in IVL's national screening from 2010. Glimepiride has been below the detection limit during recent years in the Stockholm area.
Glibenklamid is included in Region Stockholm's table of pharmaceuticals with risk for negative environmental impact according to the environmental program 2017–2021 based, inter alia, on finding of the substance in wild fish at concentrations close to therapeutic concentrations in humans. The risk of glimepiride being accumulated in fish to close therapeutic concentration is approximately equal, and the substances act according to the same mechanism. Studies of effect of glimepiride are insufficient. The environmental risk for repaglinide is estimated to be lower.
Author: Health and Medical Care Administration, Region Stockholm