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Please note: The service is intended for patients with a confirmed vitamin B12 deficiency diagnosis or those that have been previously prescribed a vitamin B12 injection

No established replacement for authorised narcolepsy treatment Historical reports involving DSIP should not be used to replace specialist assessment or evidence-based management of excessive daytime sleepiness

It also soothes dry, irritated scalps and reduces flaking

Am J Hum Genet 106:717725

Mild and transient effects observed in research include: Localized injection-site reactions, including redness, mild swelling, or irritation

Cells were cultured for 48 h in a 37 C incubator at 5% carbon dioxide