Drug induced methaemoglobinaemia

Active Ingredient: Methylthioninium chloride

Indication for Methylthioninium chloride

Population group: only newborns (0 - 40 days old)

Acute symptomatic treatment of medicinal and chemical products-induced methaemoglobinaemia.

For this indication, competent medicine agencies globally authorize below treatments:

0.3-0.5mg/kg once

Route of admnistration

Intravenous

Defined daily dose

0.3 - 0.5 mg per kg of body weight

Dosage regimen

From 0.3 To 0.5 mg per kg of body weight once every day

Detailed description

Infants 3 months old or younger and newborn infants

The recommended dose is 0.3-0.5 mg/kg body weight, given over a period of 5 minutes. A repeat dose (0.3 to 0.5 mg/kg body weight) may be given one hour after the first dose in cases of persistent or recurrent symptoms or if methaemoglobin levels remain significantly higher than the normal clinical range.

Treatment does not usually exceed one day.

Dosage considerations

For intravenous use.

Methylthioninium chloride is hypotonic and may be diluted in 50 ml glucose 50 mg/ml (5%) solution for injection to avoid local pain, in particular in paediatric population.

It must be injected very slowly over a period of 5 minutes.

It must not be administered by subcutaneous or intrathecal injection.

Active ingredient

Methylthioninium chloride

In vivo, in low concentration, methylthioninium chloride speeds up the conversion of methaemoglobin to haemoglobin. Methylthioninium chloride has been observed to stain tissues selectively.

Read more about Methylthioninium chloride

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