Hi there ,
Welcome to Just answer !
Well, i can understand how frustrating it has been for you , for not being able to enjoy intercourse and have orgasms , but , i am afraid to say that taking viagra ( sildenafil ) will not be of any consequence and use for your purpose , as it is a drug which is used for erectile dysfunction ( that is inability to have an erection ) , but it has no use for anorgasmia and decreased libido , and these are actually the problems which you are suffering from . The cause of your anorgasmia is 1) your depression and 2) use of SNRI s like venlafaxine currently and SSRI s previously as both these groups of anti depressants are known to cause sexual side effects such as decreased libido and anorgasmia .
I am mentioning below a few links which will throw more light on the basic use of viagra and the sexual side effects of venlafaxine
http://www.rxlist.com/effexor-xr-drug.htm (see side effects )
So, now the solution to your problem is that you need to 1) switch over from venlafaxine as it is aggravating your anorgasmia which is incidently there due to depression and 2) to treat depression and anxiety in order to treat the root cause of your sexual problems .
So, i suggest that you switch over from venlafaxine to wellbutrin ( bupropion ) which does not have such sexual side effects , and continue on nortriptyline and other drugs . This switch over from venlafaxine to wellbutrin will not only remove the trigger venlafaxine , that is aggravaing anorgasmia , but will also help you to treat the depression and anxiety which is the root cause of your sexual side effects .
And again i will like to stress that viagra is not to be used for anorgasmia , as it is basically used in erectile dysfunction.
So, i suggest that you discuss this with your prescribing doctor and do the mentioned changes , and i am quite hopeful that this is going to help your cause.
I wish you best of health.
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