I have been on 150mg of Effexor XR for years and have never experienced shortness of breath.
It may be that you are experiencing a rare side effect of the medication. To put your mind at rest you must see a doctor, only they can advise what is causing your problem.
Let us know how you get on.
- Effexor Information for Consumers
- Effexor Information for Healthcare Professionals (includes dosage details)
- Side Effects of Effexor (detailed)
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