Is there any definitive research on Letrozole and its affect on the immune system? Prior to taking L I might have the odd cold (blocked nose, sinus problems and sore throat) b ut have now had viruses twice in 6 months resulting in chest infection. Also have bad sweats, aches and pains, feeling ancient, sleeping badly. Have been down the different brand route and found Accord was better than the others. However am seriously wondering about stopping taking it especially if my immune system is compromised. Been on it about 18 months.
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