Brief Answer: Side Effect of Losartan Detailed Answer: Hello, I went through your history.As you are a hypertensive and diabetic, Losartan is a wonderful drug for treating hypertension in patients with diabetes. This drug delays the progression of diabetic nephropathy (end stage kidney disease) in hypertensive patients and also helps in preventing stroke. Losartan belongs to a class of drugs called angiotensin receptor blockers.It acts by blocking the action of angiotensin and dilates blood vessels thereby reducing blood pressure. Definitely Losartan is a wonderful drug but it's not free of side effects. Most common side effects that i have noticed in my patients are headaches, dizziness ,light headedness and mild allergic reactions. It is also known to cause dry cough,insomnia(loss of sleep), muscle cramps and nasal congestion. so the headaches and the reactions you are experiencing are surely the side effects of this drug. If the reactions are severe ,i would suggest you to consult your treating doctor for further evaluation. Hope I have cleared all your queries.Feel free to post any other query related to this. Thank you.

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