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A member asked:

Taking 1mg of tenex (guanfacine) every night made me somewhat hypersexual. however, taking 2mg several days ago made me impotent. can someone please explain how alpha-2 agonists cause impotence?

A doctor has provided 1 answer
Dr. Carrie Cannon answered

Specializes in Family Medicine

Alpha 1&2 receptors: Try one and one half. It seems that alpha 2 blockade is used in impotence to increase nitric oxide, but it seems you need both alpha 1 and 2 blockade to block vasoconstriction, since alpha 2 also block the release of norepinephrine and that will increase with alpha blockers. http://www.ncbi.nlm.nih.gov/pubmed/10845761

Dr Fowler and 2 doctors agreed

Answered 9/21/2014

3.7k views

Thank

Related Questions

A member asked:

Son, 9, started on Tenex (guanfacine) for ?ADHD 4 days ago. Today took his BP and was 88/59. Is this ok? BP was 114/69 at psychiatrist prior to med. f/u w dr in 2w

A doctor has provided 1 answer

A member asked:

If I suddenly stopped taking cymbalta (40mg), Buspar (buspirone) (30mg) and Tenex (2.5mg) what, if any, withdrawl symptoms can I expect? I'm also not eating much.

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A member asked:

My son is gdd(globely developmently delayed((sp?)) )hes been on tenex, adderall, vyvance.Concerta, and now on wellbutrin. Hes seven years old and the concerta drove him nuts th other stuff just made him "mad" easily aggetatted(sp?) and mean please help

3 doctors weighed in across 2 answers

A member asked:

I had a 5mm tear on my plantar fascia and also had chronic heel pain. I decided to go with tenex procedure and had it done. Did I make a good choice?

A doctor has provided 1 answer

A member asked:

I use to take linstropril (sp ?) htcz for my blood pressure and my new doc changed me over to Tenex (guanfacine) but that does that have a water pill

A doctor has provided 1 answer

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People also searched for:

Will my abdominal cramping and erectile dysfunction from taking 2mg of Tenex (guanfacine) every night going to be permanent even after I stop taking it?
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