The National Health Service (NHS) website issues a cautionary note regarding the use of metformin, particularly for individuals on long-term treatment with the drug. Metformin is a commonly prescribed medication for managing type 2 diabetes and gestational diabetes.
Primarily recommended for those at risk of developing type 2 diabetes, metformin aids in lowering blood sugar levels by improving insulin sensitivity in the body. When lifestyle adjustments like diet and exercise are insufficient to control blood sugar levels, metformin is often prescribed for diabetes management.
Metformin stands out as the most frequently prescribed drug for type 2 diabetes treatment in England, with approximately 26.4 million metformin hydrochloride treatments dispensed in 2024. Available in various forms such as tablets, liquid solutions, and powder sachets, metformin plays a crucial role in diabetes treatment.
If kidney function is compromised, patients are advised to discontinue metformin and switch to an alternative medication under medical guidance. Abruptly stopping metformin without consulting a healthcare provider can lead to elevated blood sugar levels and worsening diabetes symptoms.
Like any medication, metformin may cause side effects, though not everyone experiences them. Typical side effects occur in more than one in 100 individuals, but strategies can be implemented to manage these effects effectively.
Of note, the NHS highlights a potential risk of vitamin B12 deficiency associated with prolonged metformin use. Symptoms of vitamin B12 deficiency can range from fatigue, breathlessness, and faintness to nerve damage, cognitive impairment, and severe complications like dementia.
Regular monitoring for vitamin B12 deficiency is recommended for individuals on metformin, especially those at higher risk or exhibiting symptoms of deficiency. Dietary adjustments and potential supplementation may be necessary to maintain adequate B12 levels and prevent associated health complications.
It is essential for individuals taking metformin to undergo annual testing for vitamin B12 levels to address any deficiencies promptly. Healthcare providers can offer guidance on managing both diabetes and potential vitamin deficiencies effectively.