Läs upp

Cookies

Den här webbplatsen använder så kallade cookies. Cookies är små textfiler som lagras i din dator och sparar information om olika val som du gjort på en webbsida – t ex språk, version och statistik – för att du inte ska behöva göra dessa val en gång till. Tekniken är etablerad sedan många år tillbaka och används idag på väldigt många webbplatser på Internet.

Du kan när som helst ändra cookieinställningarna för denna webbplats.

FASS logotyp
Receptbelagd

Peka på symbolerna och beteckningarna till vänster för en förklaring.

Kontakt

Sök apotek med läkemedlet i lager

Sök lagerstatus

Seloken

MiljöinformationReceptstatusFörmånsstatus
AstraZeneca

Injektionsvätska, lösning 1 mg/ml
(Klar, färglös lösning)

Beta-receptorblockerare, selektiv

Aktiv substans:
ATC-kod: C07AB02
Läkemedel från AstraZeneca omfattas av Läkemedelsförsäkringen.
  • Vad är miljöinformation?

Miljöpåverkan (Läs mer om miljöpåverkan)

Metoprolol

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


Läs mer

Detaljerad miljöinformation

PEC/PNEC = 2.1 μg/L /7.3 μg/L = 0.29 

PEC/PNEC = ≤ 1


Environmental Risk Classification


Predicted Environmental Concentration (PEC)

PEC is based on following data:


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


PEC (µg/L) = 1.5*10-6*A*(100-R)


A (kg/year) = total sold amount API in Sweden year 2017, data from IQVIA (former IMS Health and Quintiles).

R (%) = removal rate (due to loss by adsorption to sludge particles, by volatilization, hydrolysis or biodegradation) = 0 if no data is available.

P = number of inhabitants in Sweden = 9 *106

V (L/day) = volume of wastewater per capita and day = 200 (ECHA default) (Ref. 1)

D = factor for dilution of waste water by surface water flow = 10 (ECHA default) (Ref. 1)

(Note: The factor 109 converts the quantity used from kg to μg).


A = 13759.66 kg. This figure is based on the total amount of metoprolol succinate and metoprolol tartrate sales figures from 2017, data from IQVIA (former IMS Health and Quintiles).


R = 0


PEC = 1.5 * 10-6 * 13759.66* (100-0) = 2.10 μg/L


(Note: Whilst metoprolol is extensively metabolised in humans, little is known about the ecotoxicity of the metabolites. Hence, as a worst case, for the purpose of this calculation, it is assumed that 100 % of excreted metabolites have the same ecotoxicity as parent metoprolol.)


Metabolism


Metoprolol is extensively metabolised in the body, with only a minor fraction (approximately 5%) excreted as the parent drug. The main route for excretion is via the urine (Ref. 2).


Ecotoxicity data


Endpoint

Species

Common Name

Method

Time

Result

Ref

ErC50 - Based on Average Specific Growth Rate

Desmodesmus subspicatus 

Green Alga

92/69/EEC Annex V C.3

72 h

7.3 mg/L

Note 2,3


3

NOEC - Based on Areas Under the Growth Curve

Pseudokirchneriella subcapitata

Green Alga

OECD 201

72 h

7.5 mg/L

Note 1,2

4

LOEC - Based on Areas Under the Growth Curve

15 mg/L

Note 1,2

EbC50 - Based on Areas Under the Growth Curve

22.8 mg/L

Note 1,2

NOEC - Based on Logarithmic Growth Rate

7.5 mg/L

Note 1,2

LOEC- Based on Logarithmic Growth Rate

15 mg/L

Note 1,2

ErC50 - Based on Logarithmic Growth Rate

58.3 mg/L

Note 1,2

EC50 - Based on Immobilisation


Daphnia magna


Giant Water Flea


OECD 202


48 h

>120 mg/L

Note 1,2

5

NOEC - Based on Immobilisation

30 mg/L

Note 1,2

EC50

Ceriodaphnia dubia

Cladoceran

EPA 600/4 90/027

48 H

45.3 mg/L

6

LC50

Oncorhynchus mykiss

Rainbow Trout

OECD 203

96 h

130 mg/L

Note 1,2

7

NOEC - Based on Symptoms of Toxicity

32 mg/L

Note 1,2

LC50

Danio rerio

Zebra Fish

OECD 203

96 h

167 mg/L

Note 1,2

8

LOEC - Based on Mortality

157.5 mg/L

Note 1,2

EC50 - Based on Respiration Inhibition

-

-

OECD 209

3 h

>100 mg/L

Note 1,4

9

NOEC - Based on Respiration Inhibition

3 h

100 mg/L

Note 1,4

Note1: Studies were conducted with metoprolol succinate, the difference in reported and actual concentrations of metoprolol is anticipated to have negligible impact on this assessment.

Note 2: Concentrations were confirmed by analysis, and results expressed as nominal.

Note 3: Data for metoprolol taken from Cleuvers M. Initial Risk Assessment for Three Beta-Blockers Found in the Aquatic Environment. Chemosphere, 2005, 59, 199-205. Concentrations of metoprolol were as free base in this study.

Note 4: Results are expressed as nominal concentrations.


PNEC (Predicted No Effect Concentration)


Short-term tests have been undertaken for species from three trophic levels, based on internationally accepted guidelines. Therefore, the PNEC is based on the acute toxicity to green alga (Desmodemus subspicatus), the most sensitive species, and an assessment factor of 1000 is applied, in accordance with ECHA guidance (Ref. 10).


PNEC = 7300 µg /L/1000 = 7.3 µg/L


Environmental risk classification (PEC/PNEC ratio)


PEC/PNEC = 2.10 μg/L / 7.3 μg/L = 0.29, i.e. PEC/PNEC ≤ 1 which justifies the phrase

“Use of metoprolol has been considered to result in low environmental risk”. 


In Swedish: “Användning av metoprolol har bedömts medföra låg risk för miljöpåverkan” under the heading “Miljörisk”.


Environmental Fate Data

Endpoint

Method

Test Substance Concentration

Time

Result

Ref

Partition Coefficient Octanol Water

OECD 107

100 mg/L

-

Log P = -0.06 @ pH 5

Log P = -0.90 @ pH 7

11

Percentage DOC removal

ISO 7827-1984 (E)

34 mg DOC/L

28 d

14 %

8


Biodegradation

The aerobic biodegradation was determined in accordance with ISO 7827-1984 (E) (Ref. 8), using the OECD guidelines’ criteria for ready biodegradation. According to the results, metoprolol is not readily biodegradable (loss of Dissolved Organic Carbon (DOC) <70% after 28 days). Based on the data above (considering that no other data is available), the statement “Metoprolol is potentially persistent” is justified.


In Swedish: “Metoprolol är potentiellt persistent” under the heading “Nedbrytning”.


Bioaccumulation

Log P = < 4 at pH 7.

Metoprolol has no significant bioaccumulation potential, as indicated by the Log P. Therefore the statement “Metoprolol has low potential for bioaccumulation” is used.


In Swedish: “Metoprolol har låg potential att bioackumuleras” under the heading “Bioackumulering”.


Physical Chemistry Data

Endpoint

Method

Test Conditions

Result

Reference

Solubility Water

Not specified, method unknown

-

200 mg/L

9


References


  1. [ECHA] European Chemicals Agency. Guidance on Information Requirements and Chemical Safety Assessment. Chapter R.16: Environmental exposure assessment (version 3.0). February 2016.
    http://echa.europa.eu/documents/10162/13632/information_requirements_r16_en.pdf


  2. Logimax Investigators Brochure, Edition 2 Section 5 Effects in Humans. November 2006.


  3. Aquatic Ecotoxicity of Pharmaceuticals Including the Assessment of Combination Effects. Cleuvers M. Toxicology Letters 2003 v142 n3 p185 – 194.


  4. Metoprolol Succinate: Toxicity to the green alga Selenastrum capricornutum.

    Brixham Environmental Laboratory, AstraZeneca, UK, Report BL7587. October 2003.


  5. Metoprolol Succinate: Acute toxicity to Daphnia magna. Brixham Environmental Laboratory, AstraZeneca, UK, Report BL7588. October 2003.


  6. Prediction and Experimental Validation of Acute Toxicity of Beta Blockers in Ceriodaphnia dubia. Fraysse B et al. Environ. Toxicol. Chem 2005 v24 n10 p2470 – 2476.


  7. Metoprolol Succinate: Acute toxicity to rainbow trout (Oncorhynchus mykiss).

    Brixham Environmental Laboratory, AstraZeneca, UK, Report BL7589. October 2003.


  8. Environmental assessment of the pharmaceutical agent "A004" from AB Astra.

    Report No: 4/92, Toxicon. April 1992.


  9. Metoprolol Succinate: Effect on the respiration rate of activated sludge. Brixham Environmental Laboratory, AstraZeneca, UK, Report BL7772. December 2003.


  10. ECHA, European Chemicals Agency. Guidance on Information Requirements and Chemical Safety Assessment. Chapter R10. May 2008 . https://echa.europa.eu/documents/10162/13632/information_requirements_r10_en.pdf/bb902be7-a503-4ab7-9036-d866b8ddce69


  11. Metoprolol Succinate: Determination of n-octanol-water partition coefficient.

    Brixham Environmental Laboratory, AstraZeneca, UK, Report BL7827. September 2004.