Electrolytes are key minerals like sodium, potassium and calcium that play crucial roles in the body. They help regulate muscle contractions, maintain proper hydration and balance pH levels. Additionally, electrolytes support nerve function, heart health and healthy blood pressure. They're essential for preventing dehydration and ensuring smooth bodily functions, which is why they're commonly included in sports drinks or available as supplements to replenish what’s lost through sweating.

In moderate cases of electrolyte imbalance, symptoms may include confusion, irritability, diarrhoea or constipation, fatigue, headaches and irregular heartbeats. You might also experience muscle cramps or weakness, nausea, vomiting and numbness or tingling in your limbs. Severe dehydration, which can also lead to an electrolyte imbalance, may cause dark-coloured urine, intense thirst, dizziness and infrequent urination.

Taking electrolyte supplements usually doesn’t cause serious problems for most people. But taking too much can lead to issues like dizziness, weakness, swelling in the ankles or feet, mood changes and seizures. Overuse might also result in heart rhythm issues, fatigue and nausea.