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Alvedon Novum

MiljöinformationFörmånsstatus
GlaxoSmithKline Consumer Healthcare

Filmdragerad tablett 500 mg
(Vita, avlånga utan skåra, märkta med A, 19×9 mm)

Analgetikum, antipyretikum

Aktiv substans:
ATC-kod: N02BE01
Företaget omfattas av Läkemedelsförsäkringen
  • Vad är miljöinformation?

Miljöpåverkan (Läs mer om miljöpåverkan)

Paracetamol

Miljörisk: Användning av paracetamol har bedömts medföra låg risk för miljöpåverkan.
Nedbrytning: Paracetamol bryts ned långsamt i miljön.
Bioackumulering: Paracetamol har låg potential att bioackumuleras.


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Detaljerad miljöinformation

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) = 1.5*10-6*0.85*A(100-98)

PEC = 1.80 μg/L

Where:

A = 600289.89 kg (total sold amount API in Sweden year 2014, data from IMS Health). 85% excreted unchanged or as conjugates with potency assumed equal to parent, based on metabolism data (Reference 4). No metabolism has been assumed in the PEC calculation.

R = 98% removal rate from waste water treatment plant (Reference 9)

P = number of inhabitants in Sweden = 9 *106

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

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


Predicted No Effect Concentration (PNEC)

Ecotoxicological Studies

Green Algae (Scenedesmus subspicatus):

IC50 72h (growth) = 134,000 μg/L (OECD 201) (Reference 5)

Water flea (Daphnia magna):

Acute toxicity

EC50 48 h (immobility) = 9,200 μg/L (OECD 202) (Reference 7)

Zebra Fish (Brachydanio rerio):

Acute toxicity

LC50 96 h (lethality) = 378,000 μg/L (OECD 203) (Reference 5)

NOEC = 95,000 μg/L


PNEC = 9,200/1,000 = 9.20 μg/L

PNEC (μg/L) = lowest EC50/1000, where 1,000 is the assessment factor applied for three acute EC50s. The EC50 for water flea (= 9,200 ug/L) has been used for this calculation since it is the most sensitive of the three tested species.


Environmental risk classification (PEC/PNEC ratio)

PEC/PNEC = 1.80/9.20 = 0.196, i.e. PEC/PNEC ≤ 1 which justifies the phrase “Use of paracetamol has been considered to result in low environmental risk.”


Degradation

Biotic degradation

Inherent degradability:

99% degradation in 5 days (OECD 302B) (Reference 3)


Simulation studies:

WWTP study:

Biodegradation constant = 58-80 L g-1ss d-1 (Reference 6)


Water-sediment study:

50% (DT50) degradation in 3.10 days days (OECD 308) (Reference 8)


Abiotic degradation

Hydrolysis:

Half-life, pH 7 > 1 year (TAD 3.09) (Reference 4)


Photolysis:

No Data


Justification of chosen degradation phrase:

Results of biological degradation: Inherent biodegradation = 99% in 5 days (OECD 302B, IUCLID data set). The substance is inherently biodegradable. The material is expected to be highly removed in wastewater treatment plants, 98% removal (Reference 9). This is supported by a measured biodegradation constant of 58-80 L g-1ss d-1 in a WWTP simulation test (Reference 6). Biodegradation constants greater than 10 are expected to result in greater than 90% biodegradation. Additionally, a DT50 of 3.1d and a DT90 of 10d was measured (Reference 8) using a water-sediment study (OECD 308) indicating a low potential for persistence. The phrase ‘Paracetamol is slowly degraded in the environment’ is thus chosen.


Bioaccumulation

Partitioning coefficient:

Log Pow = 0.51 at pH 7 (OECD 107) (Reference 3)


Justification of chosen bioaccumulation phrase:

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


Excretion (metabolism)

85% of the dose is excreted in urine within 24 hrs as free and conjugated paracetamol (Reference 4). For purposes of the risk assessment assume conjugates are converted back into free paracetamol (Reference 2).


PBT/vPvB assessment

Paracetamol does not fulfil the criteria for PBT and/or vBvP.

All three properties, i.e. ‘P’, ‘B’ and ‘T’ are required in order to classify a compound as PBT (Reference 1). Paracetamol does not fulfil the criteria for PBT and/or vBvP based on a log Dow < 4.


Please, also see Safety data sheets on http://www.msds-gsk.com/ExtMSDSlist.asp.


References

  1. ECHA, European Chemicals Agency. 2008 Guidance on information requirements and chemical safety assessment.

  2. Pharmacokinetic properties: Metabolism and Elimination. Summary of Product Characteristics Ziagen (Paracetamol) 300mg Film Coated Tablets. ViiV Healthcare UK Ltd., March 2013.

  3. European Chemicals Bureau 2000. IUCLID Dataset Paracetamol.

  4. AHFS Drug Information, 2002. American Society of Health-System Pharmacists.

  5. Henschel, K., Wenzel, A., Diedrich,M., Fliedner, A. 1997. Regulatory Toxicology and Pharmacology 25, 220-225.

  6. Joss, A., et al. 2006. Water Research 40, 1686-1696.

  7. Kuhn, R., Pattard, M., Pernak, KD.,Winter, A. 1989. Water Research 23, No.4, 495-499.

  8. Loffler, D., Rombke, J., Meller, M., Ternes, T. 2005. Environmental Science and Technology 39, 5209-5218.

  9. Ternes, T. 1998. Water Research 32, No.11 3245-3260.

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