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Filmdragerad tablett 200 mg
(Tillhandahålls ej) (Oval (13,8 mm lång och 7,4 mm bred), gul, filmdragerad tablett präglad med ”TZD” på framsidan och ’200’ på baksidan.)

Antibakteriella medel för systemiskt bruk, övriga antibakteriella medel.

Aktiv substans:
ATC-kod: J01XX11
Utbytbarhet: Ej utbytbar
Läkemedel från MSD omfattas av Läkemedelsförsäkringen.
  • Vad är miljöinformation?

Miljöinformation

Miljöpåverkan

tedizolidfosfat

Miljörisk: Användning av tedizolidfosfat har bedömts medföra försumbar risk för miljöpåverkan.
Nedbrytning: tedizolidfosfat är potentiellt persistent.
Bioackumulering: tedizolidfosfat har låg potential att bioackumuleras.


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Detaljerad miljöinformation


Detailed background information


Environmental Risk Classification


Predicted Environmental Concentration (PEC)

PEC is calculated according to the following formula:


PEC (μg/L) = (A*109*(100-R))/(365*P*V*D*100) = 1.37*10-6*A(100-R)


PEC = 0.000004 μg/L


Where:

A = 0.03 kg (total sold amount API in Sweden year 2022, data from IQVIA) (Ref. I)

R = 0 % removal rate (worst case assumption)

P = number of inhabitants in Sweden = 10 *106

V (L/day) = volume of wastewater per capita and day = 200 (ECHA default) (Ref. II)

D = factor for dilution of waste water by surface water flow = 10 (ECHA default) (Ref. II)


Predicted No Effect Concentration (PNEC)


Ecotoxicological studies

Blue-green algae (Anabaena flos-aquae) (OECD 201) (Ref. III):

EC50 72 h (growth) = 0.31 mg/L

EC50 72 h (yield) = 0.14 mg/L

NOEC 72 h (growth rate and yield) = 0.063 mg/L


Crustacean, water flea (Daphnia magna) (OECD 211) (Ref. IV):

Chronic toxicity

NOEC 21 d (survival and reproduction) = 0.6 mg/L


Fish, fathead minnow (Pimephales promelas) (OECD 210) (Ref. V):

Chronic toxicity

NOEC 32 d (embryo hatching success and larval survival) = 0.03 mg/L


PNEC = 3 μg/L (30 µg/L / 10 based on the most sensitive chronic NOEC for the fathead minnow and an assessment factor (AF) of 10)



Environmental risk classification (PEC/PNEC ratio)

PEC/PNEC = 0.000004/3 = 0.000001, i.e. PEC/PNEC ≤ 0.1 which justifies the phrase "Use of tedizolid phosphate has been considered to result in insignificant environmental risk.”


Degradation

Biotic degradation

Degradability (OECD 308) (Ref. VI):

The biodegradation of [14C]tedizolid was studied for 100 days in two aerobic sediments varying in pH, textural characteristics, organic matter content and microbial content with associated overlying waters. Water/sediment samples from each system were analyzed at 2, 15, 29, 43, 64 and 100 days after dosing. No evidence of primary or cumulative biodegradation was observed. The half-life of [14C]tedizolid is greater than 100 days.


Justification of chosen degradation phrase:

The DT50 for the total system was >120 d; therefore the phrase “The substance is potentially persistent” is chosen.


Bioaccumulation

Partitioning coefficient (OECD 117) (Ref. VII):

Log Kow = 1.3 (HPLC)


Justification of chosen bioaccumulation phrase:

Since log Kow < 4 the substance has low potential for bioaccumulation.



References

  1. Data from IQVIA ”Consumption assessment in kg for input to environmental classification - updated 2023 (data 2022)”.

  2. ECHA, European Chemicals Agency. 2008 Guidance on information requirements and chemical safety assessment. http://guidance.echa.europa.eu/docs/guidance_document/information_requirements_en.htm

  3. Dr. U. Noack - Laboratorien, 2012. "BAY 1170438: Alga, Growth Inhibition Test with Anabaena sp (Anabaena flos-aquae), 72 hours," Project No. 120705BL, Germany, 20 December 2012.

  4. Bayer, 2014. "Reproduction study of BAY 1170438 (Tedizolid) in Daphnia magna," Report No. PH-37511, Bayer HealthCare, 13 January 2014.

  5. Bayer, 2013. "Early-Life-Stage-Test Fish with Tedizolid (BAY 1170438)," Report No. PH-37546, Bayer HealthCare, 17 December 2013.

  6. Bayer, 2013. "Aerobic Transformation in an Aquatic Sediment-System with Tedizolid [BAY 1170438 (C14)]," Report No. PH-37547, Bayer HealthCare, 25 November 2013.

  7. Bayer, 2012. "Tedizolid / BAY 1170438 / Physicochemical Report / Determination of the Partition Coefficient (n-Octanol/Water), HPLC Method," No. 12100009, Bayer HealthCare, 09 October 2012.