I have been on Losartan since 2008. Shortly after starting Losartan I starting having trouble with a high pitch hissing in my left ear.
I realize this answer is very, very late but may help someone in future.
Tinnitus does not appear to be a known side effect of losartan ... but then it could be a new and rare side effect. I hope this has resolved for you.
- Losartan Information for Consumers
- Losartan Information for Healthcare Professionals (includes dosage details)
- Side Effects of Losartan (detailed)
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