blog detail banner

Type 2 Diabetes Questions

Can Metformin cause problems with vision? Is it permanent?

Jul 21, 2016

I’m afraid there is no simple answer to this one. But there is a clear way ahead. Let me explain.

If you get blurry vision as soon as you start the metformin, there are some experts who say that this is could be a good sign. How come? Well, diabetes affects vision and you could have been losing your eyesight gradually, as your sugar levels went up over months and years. You are not even aware of this change in vision, because the loss is so gradual.

As soon as you start the metformin, your sugar suddenly comes under control and your eyes suddenly cannot adjust to the new, lower blood sugar, causing the blurry vision. The answer therefore could be to lower your starting metformin dose and then slowly, increase it over a few weeks/months, giving your body and your eyes a chance to adjust. The blurry vision could disappear with this.

However, if you have started to experience blurry vision after using metformin for a few years, the answer could be very different.

This form of vision loss happens due to loss of Vitamin B12 from the body, because Metformin interferes with our ability to absorb this vitamin from food. Vitamin B12 forms the protective sheath or insulation of all nerves in the body, including the one that is critical for vision, the optic nerve. When the optic nerve is damaged due to prolonged metformin use, the right solution is to immediately supplement with Vitamin B12.

You should also know that with long term use, metformin also interferes with our ability to use two other vital nutrients, Vitamin B9 and Co Enzyme Q10 in the human body. This can cause a range of side effects – from hair loss and insomnia and heart palpitations to unexplained muscle pains.

The real answer – to both immediate blurry vision and later-day blurry vision – could lie in making critical lifestyle changes, such as diet and exercise – and in using natural herbs and dietary supplements to deal with the diabetes, rather than relying only on prescription medicines like metformin.

Our Choice of Vitamin B and CoQ10 available on Amazon:

Sanofi Coenzyme Q10
CoQVit Coenzyme Q10
Unived Coenzyme Q10
Qunol Plus Coenzyme Q10
Biotrex Vitamin B6 Pyridoxine HCL
Palak Notes Folate Vitamin B12

To know more about side effects of Metformin and how you can deal with them

Read this article

DISCLAIMER: We have taken time & effort to pick dietary supplements that are of great quality, have bioavailable ingredients & have nutrients in the correct proportions. Some of the links on this website are affiliate links. Which means we make a commission when you buy, at no extra cost to you. The products we recommend are the ones we believe in.

Sharda Agarwal

Sharda Agarwal

Co-founder, Sepalika. Nutritional Therapy Practitioner (Cert Awaited), Nutritional Therapy Association, USA
Sharda Agarwal is a qualified Functional Nutrition Therapy Practitioner & a Certified Blood Chemistry Analyst. She first used dietary supplements to overcome a debilitating migraine she suffered for years. Since then she has studied the subjects of nutrition and nutrients extensively. She uses this to manage the health of her family at home and with Sepalika.