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Date of last update: 10/15/2017.

Forum Name: Gastroenterology Topics

Question: drug induced pernicious anemia

 fleecy - Fri Nov 11, 2005 4:56 am

Recently I was diagnosed with a drug induced pernicious anemia that has caused some severe neurological symptoms along with some heart problems.
I was started on b12 injections 3 months ago. Doctor is only giving once a month. I am still having new neurological symptoms cropping up.

My questions are:
Is once a month shot enough?
If you are deficeint in b12 does this cause other dificiencies.
I am bruising alot. Counter over 32 bruises on legs thighs and arms.
I have also had some heart problems. arrythmeias and shortness of breath, along with extreme fatigue and some pain on excertion.

Can this condition damage the heart. Should I consult a cardiologist.
Will the Hcl in my stomach ever return.
I get severe pain if I do not eat, and also have been woken up early morning with abdominal pain.

Thanks for your reply in advance
 Dr. Safaa Mahmoud - Mon Dec 11, 2006 6:26 pm

User avatar Hello,

Many diseases result in interference with the absorption and metabolism of vitamin B-12 and cobalamin (Cbl) deficiency,. This will result in the development of a macrocytic anemia and neurological complications.

Although a list of drugs interfere with Cbl uptake in the ileum as they causes mucosal damage, they rarely cause symptomatic vitamin B-12 deficiency because it needs long time to deplete body stores of Cbl.

These drugs include:
- neomycin,

Many active forms of vit B12 are used for treatment (e.g.Cyanocobalamin).

The usual dose is 100 mcg IM qd for 1 wk, followed by 100 mcg IM qwk for 5-6 wk, then 100 mcg IM qmo for life. Other dosing schedules are prescribed by specialized doctors.

It would be helpful if you can inform us what kind of therapy that caused your problem, how the diagnosis is made, and what is the full report of your last blood picture and other tests done?

Follow up with your doctor is essential.
Best regards.

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