Physician warns some common drugs, including BP medicines, can reduce sodium and produce weakness

Doctors caution that several routinely prescribed medications, including treatments for high blood pressure, can lead to a drop in the body's sodium level. This condition, known as hyponatremia, often causes fatigue, lightheadedness or confusion and can become serious if ignored.

Clinicians say many people taking daily pills for hypertension, depression or heart conditions do not realise these drugs can quietly disturb the body's salt balance. The effect arises because some medicines prompt the kidneys to lose excess sodium or make the body retain extra water.

Sodium is essential for regulating blood pressure, fluid balance and the healthy function of nerves and muscles. When sodium falls too low, cells may swell, producing symptoms such as tiredness, muscle aches and, in extreme cases, seizures.

Experts note that older adults are especially vulnerable, particularly those taking multiple medications or living with chronic illnesses like diabetes, kidney disease or heart failure.

Several categories of medicines have been linked with sodium loss: diuretics (water pills) used for blood pressure and swelling, certain antidepressants such as SSRIs, some pain medications, and drugs used for diabetes or epilepsy.

Patients are advised not to stop prescribed medicines abruptly. Instead, they should contact their doctor if they notice new symptoms such as weakness, confusion, cramps or nausea.

Signs of low sodium can vary — ongoing tiredness, dizziness, vomiting, muscle cramps or headaches are common. When sodium drops severely, a person may faint or experience convulsions.

Doctors add that people with kidney or liver disease, older adults and those who overhydrate during exercise face higher risk. Women, particularly older women, appear to be slightly more susceptible.

To reduce risk, medical professionals recommend regular blood tests for anyone on long-term antihypertensive or antidepressant therapy. Maintaining a balanced diet, sensible fluid intake and seeking prompt medical attention for sudden weakness can help prevent complications.

Dr. Anil Mehta, a senior physician, said, "Low sodium is often mistaken for ordinary tiredness. Left unchecked, it can be dangerous. Regular checks and patient awareness are crucial."

He urged people not to fear their medications but to understand them: "Medicines do more good than harm, but we should use them carefully and watch for side effects," he said.

With timely testing, clear medical advice and simple precautions, low sodium can usually be prevented or managed, allowing patients to continue their treatment safely.