Common Dehydration, Decreased potassium level in blood, Decreased magnesium level in blood, Increased blood uric acid.

Expert advice for Frusenex Tablet
Frusenex helps removes excess water from your body and lower blood pressure. Take it in the morning with breakfast to avoid getting up at night to urinate. May cause dizziness in the initial days of treatment. Monitor your blood pressure after starting Frusenex, and notify your doctor if it hasn't gone down. Notify your doctor if you experience dizziness, tiredness, or muscle weakness that doesn't go away. Take potassium supplements or potassium-rich diet (banana, spinach, coconut water etc) as Frusenex can decrease your potassium levels and lead to dehydration. Requires routine blood tests to monitor your kidney function.

Q. How is Frusenex different from Torasemide?
Both Frusenex and Torasemide are loop diuretics and are used to treat high blood pressure and edema caused by an underlying liver, kidney or lung diseases but Frusenex is also used in the treatment of hypercalcemia (high calcium levels in the blood). However, Torasemide has a long duration of action and is safe to use in patients with renal failure as compared to furosemide.