Diabetic News: Vitamin B12 Monitoring and Metformin Users


Do you know your vitamin B12 level?

Are you taking Metformin and have been doing so for some time now? If so, what then is your vitaminB12 level? Do you even know what that is? Should you be concerned? Please continue to read.

Today I will share with you some news I read about vitamin B12 monitoring and Metformin users. It is felt, based on a study which was done that when we use Metformin for a long time, it lowers our vitamin B12 levels.

Some Notes from the Research

  • Veterans 50 years and older were used in the study.
  • Some of the participants had type 2 diabetes and were taking Metformin (3,687).
  • The remaining 13,258 participants did not have diabetes and they were not taking Metformin.
  • Long-term was defined as taking 500mg or more for at least 6 months.
  • The study revealed that less than half of the adults with diabetes who were taking Metformin over a long-term period had their vitamin B12 levels tested.
  • The group taking Metformin had a lower vitamin B12 level.
  • Approximately 7% of the diabetic patients were considered vitamin B12 deficient.
  • They concluded that long-term users of Metformin should be monitored for the possibility of vitamin B12 deficiency so that they can be given B12 replacement therapy.

I can well imagine that your eyebrows are less than relaxed at this moment and you are now depending on me to tell you something about this vitamin B12. Surprised face Yes, I will do that now. Please stay tuned for more and remember that you can subscribe to our newsletter for more diabetic news and my journey to rid my life of diabetes.

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Ok, as promised, let’s now take a look at vitamin B12.

Vitamin B12 Notes

  • It is a water-soluble vitamin.
  • More people have a vitamin B12 deficiency than we are made aware.
  • The best way to get vitamin B12 is from eating animal protein. This includes eggs and organ meats. Meat
  • Our bodies need only a little vitamin B12.
  • We have to get this vitamin on a daily basis in order to have enough to supply our bodies’ needs.
  • If we consume excess vitamin B12, it is flushed from our body via our urine. I would, however, not be comforted by this fact and stick to the recommended dose.

Vitamin B12 Health Benefits

  • Good for our cardiovascular system.
  • Can help to control high blood pressure.
  • Vitamin B12 could benefit those with high cholesterol levels.
  • It could also prevent a build-up of plaque in our arteries.
  • Aids digestion.
  • Helps with memory.
  • Good for hair.
  • Benefits our heart.
  • Mood booster.
  • Good for our skin.
  • Can help with energy level.
  • Helps with enzyme production.
  • Great for DNA synthesis.
  • Protects against hormonal imbalance.
  • Provides help for our nervous system.
  • Prevents adrenal fatigue.
  • Help to keep depression at bay.
  • Could help to keep Alzheimer’s away.

Vitamin B12 Symptoms

  1. Issues with your heart such as palpitations.
  2. Muscle aches.
  3. Muscle weakness.
  4. Feeling tired all/most of the time.
  5. Shortness of breath or issues breathing.
  6. Pain in the joints.
  7. Depression or feeling sad most of the time.
  8. Feeling anxious too often.
  9. The inability to focus. Some people suffer from attention disorders as a result of a deficiency in vitamin B12.
  10. Poor memory.
  11. Feeling dizzy.
  12. Loss of appetite or poor eating habits.
  13. Nausea.
  14. Diarrhea.
  15. Tummy cramps.
  16. Pernicious anemia, which can result in dementia.


Taking 500mg per day of Metformin could leave us with many health issues due to a deficiency in vitamin B12. It is, therefore, smart to ask one’s doctor to test to see if we have the correct level of vitamin B12 essential for optimal health.

It is indeed good news to know that we can get our full supply of vitamin B12 from animal proteins. However, for those of us who eat mostly plant-based foods to ensure that we have better blood glucose levels, then it may become necessary to take a vitamin-B12 supplement.

We must be careful that we look at the whole being and take the necessary steps to be healthy whilst we continue the struggle to rid our lives of diabetes and other lifestyle illnesses. Until next time, please continue to take the necessary steps to be diabetic-free.

Medical Disclaimer


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  1. // Reply

    Thanks for the good information about the effects of Metformin to our Vitamin B12 levels. It is an interesting fact that you have shared. But I have to be honest that I know little about Metformin. Can you enlighten me with what it is?

    1. // Reply

      Thanks, ht, Metformin is one of the first drugs doctors prescribe for diabetics. It is argued that it is relatively safe when compared with the other prescribed drugs. Thanks and all the best ht.

  2. // Reply

    Hello Josephine, a well written call to action post.
    Often when people are diagnosed with diabetes (whichever type), they seem to think they have to live with it and be on pills for life. There is nothing that cannot be cured/gotten rid of once we know what to, how to and be willing to take the steps necessary to do it. Changing our lives takes effort but it can be done.

    ‘Looking at the whole being’ is a great way of seeing it as what affects one part of our being has a knock on effect on another part. Thank you for helping others to see/know what they can do to help themselves.

    1. // Reply

      EJ, you are perfectly correct that when one part of our being is affected, it can hurt other parts. That is definitely why we need a holistic approach. Thank you for bringing this view to the table and all the best.

  3. // Reply

    Hello Josephine
    Thank you for sharing such an informative and helpful information of the relevance and sources of B12 vitamin. Where can I possibly by the supplement at a friendly cost?

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