Doxazosin and Viagra Interactions Checker - Drugs.com

Applies to: doxazosin and Viagra (sildenafil) Talk to your doctor before using sildenafil together with doxazosin. Combining these medications can lower your blood pressure and increase the risk of dizziness, lightheadedness, fainting, flushing, headache, and nasal congestion.

Doxazosin For Erectile Dysfunction: What You Need To Know - HealthMatch

Doxazosin should be taken to treat high blood pressure or BPH and is not intended to be used in the same way as Viagra or Cialis. In other words, this medication should not be taken to achieve an erection, even though it may help erections occur. Taking the medication at bedtime is recommended to prevent side effects such as dizziness or fainting.

Combined oral therapy with sildenafil and doxazosin for the treatment ...

The results were assessed by means of the IIEF questionnaire before the beginning of the study, after 30 days of therapy and after 60 days. Of the 14 patients treated with doxazosin and sildenafil, 11 (78.6%) showed a statistically significant increase of IIEF; in the placebo group, only one patient (7.1%) recorded a significant IIEF increase.

Combined oral therapy with sildenafil and doxazosin for the treament of ...

Of the 14 patients treated with doxazosin and sildenafil, 11 (78.6%) showed a statistically significant increase of IIEF, moving on average from 13.0 (V0) to 21.2 (V2).

Issue 155 Item 8 Warning: Combining Viagra with ... - Diabetes In Control

Many men who take alpha-blockers for BPH also take Viagra. In fact, doxazosin is sometimes combined with Viagra to increase Viagra's effect. Viagra is a modest vasodilator. It can lower blood pressure for several hours after a dose. Now there are reports of postural hypotension and dizziness in men taking Viagra within 4 hours of doxazosin.

Combination of doxazosin and sildenafil exerts an additive relaxing ...

Doxazosin significantly increased the ability of sildenafil to inhibit NE-induced contractions in cavernosal strips. Conclusions: Sildenafil and doxazosin reduced adrenergic tone of prostatic and cavernosal smooth muscle and their combination provided a significant benefit when targeting relaxation of both tissues.

Common questions about doxazosin - NHS

Tell your doctor or pharmacist if you're taking medicines for erectile dysfunction, such as sildenafil, tadalafil or vardenafil. If you take doxazosin with these medicines, you may feel dizzy or light-headed. You may be asked to leave a 6-hour gap between taking the doxazosin and any medicines for erectile dysfunction.