Viagra News and Research

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Sildenafil citrate, sold as Viagra, Revatio and under various other trade names, is a drug used to treat erectile dysfunction and pulmonary arterial hypertension (PAH). It was developed and is being marketed by the pharmaceutical company Pfizer. It acts by inhibiting cGMP specific phosphodiesterase type 5, an enzyme that regulates blood flow in the penis. Since becoming available in 1998, sildenafil has been the prime treatment for erectile dysfunction; its primary competitors on the market are tadalafil (Cialis) and vardenafil (Levitra). It is frequently called the 'blue pill'.

New advances in sickle cell disease

Excruciating pain episodes, recurrent pneumonias, strokes, severe infections, chronic hemolytic anemia, and secondary pulmonary hypertension are common complications of sickle cell disease, a life-threatening inherited defect in blood that causes normally disc-shaped red blood cells to take on a sickle shape.

6 Dec 2004

Study will help cancer survivors treated with radical hysterectomy regain their sexual health

When Linda Mercer underwent a radical hysterectomy to treat her cancer, she found herself and her husband struggling to regain a satisfying sex life.

4 Dec 2004

Pfizer submits regulatory filings for Revatio (sildenafil citrate) as a treatment for pulmonary arterial hypertension

Sildenafil is the active ingredient in Viagra, Pfizer's erectile dysfunction medication used by more than 23 million men worldwide.

4 Dec 2004

FDA commits to use of radio frequency identification (RFID) technology

The U.S. Food and Drug Administration (FDA) is stepping up its efforts to improve the safety and security of the nation's drug supply through the use of radio frequency identification (RFID) technology.

16 Nov 2004

Sildenafil tablets will soon have small radio frequency tags

In an effort to combat drug counterfeiting and protect patients, Pfizer has announced a new initiative to use radio frequency identification (RFID) tags that will enable wholesalers and pharmacies to authenticate all Viagra sold in the United States.

16 Nov 2004

FDA has warned consumers not to purchase or to consume Actra-Rx or Yilishen, promoted as "dietary supplements" for treating erectile dysfunction

The Food and Drug Administration today warned consumers not to purchase or to consume Actra-Rx or Yilishen, two products promoted and offered for sale on Web sites as "dietary supplements" for treating erectile dysfunction and enhancing sexual performance for men.

9 Nov 2004

FDA warns against use of Actra-Rx and Yilishen

The U.S. Food and Drug Administration has warned consumers not to purchase or to consume Actra-Rx or Yilishen, two products promoted and offered for sale on Web sites as "dietary supplements" for treating erectile dysfunction and enhancing sexual performance for men.

4 Nov 2004

Ecstasy study identifies potentially lethal combination

Some ecstasy users are using a variety of pharmaceutical drugs to increase the effect of ecstasy or to combat the negative effects of the drug a new study released today has found. The results suggest that some of these combinations are potentially lethal and could result in 'serotonin syndrome'.

12 Oct 2004

Half of sildenafil samples purchased on the internet were fake

Around half of the Viagra samples purchased on the Internet were counterfeit, according to researchers who are today announcing a new technique that detects counterfeit medicines at the British Pharmaceutical Conference.

27 Sep 2004

Pfizer files lawsuits against eighteen internet sites for selling illegal copies of LIPITOR

Pfizer has filed lawsuits against a second group of operators of eighteen internet sites for selling unapproved and illegal copies of Pfizer’s leading cholesterol medicine, LIPITOR®, the company said today.

2 Sep 2004

Prescription drugs from bogus Canadian website are all fake

A Food and Drug Administration (FDA) analysis of three commonly prescribed drugs purchased from a Web site advertised as Canadian showed that so-called "Canadian Generics" bought from the Web site were fake, substandard and potentially dangerous.

15 Jul 2004

Women's health study findings

AllPoints Research today announced the results of a women's health study regarding behavior and perception about sexual and cardiovascular health by women aged 40 and older.

16 Jun 2004

Oral sildenafil improved exercise tolerance, cardiac output and quality of life in 22 patients with primary pulmonary hypertension

Oral sildenafil (Viagra®) improved exercise tolerance, cardiac output and quality of life in 22 patients with primary pulmonary hypertension, according to the results of the first randomized, placebo-controlled, double-blind, crossover study, reported in the April 7, 2004 issue of the Journal of the American College of Cardiology.

6 Apr 2004

Research shows sildenafil can have an adverse effect on the morale of men

The launch of sildenafil (Viagra) had an adverse effect on the morale of men who found it did not work, according to new research. It also reveals that men are more distressed by impotence than has generally been realised.

28 Mar 2004

Study shows Levitra enhances patients' self-esteem by improving erections

The first clinical study to evaluate LEVITRA™ (vardenafil HCl) in men with mild Major Depressive Disorder (MDD) and erectile dysfunction (ED) showed LEVITRA produced statistically significant improvements over baseline in all measures of erectile function (EF) and depression/self-esteem. In the study, men taking Levitra were nearly three times more likely to report improved erections than men taking placebo.

24 Mar 2004