How long for Vitamin B12 treatment to show effectiveness?

How long does it take for Vitamin B12 treatment to be effective?

  • Submitted on 29/07/2025

3 specialists answered

  • For which purpose do you have to take such medication?

    Amédée Nkeshimana

    Ophthalmologist

    |

    Nalinnes

    Amédée Nkeshimana
  • After 3–6 months
    Full resolution of symptoms in many cases, especially if treated early

    Rami Abdo

    Ophthalmologist

    |

    Molenbeek-Saint-Jean

    Rami Abdo
  • You need to repeat the blood test to see if the value becomes normal

    Siham Faouji

    General practitioner

    |

    Dilbeek

    Siham Faouji

The content provided is strictly informational and should not be considered a replacement for professional advice from doctors or healthcare providers.

Have a question? Ask our specialists

Ask anonymously Ask for free

Ask our specialists

We’ll email you here as soon as a specialist answers your question

QnA guideline for submitting question

Provide context and detail about your health concerns
Be short and to the point so specialists can give you a clear answer
Avoid offensive or abusive content, as well as name references
Do not ask about prices, prescriptions, or diagnoses
Submit your question
We’ll email you here when there is an answer
We got your question

We’ll email you when a specialist replies.

We couldn’t submit your question

An unexpected error occurred but we’re working on it. Please try again.