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 perspective on the causes, effects and potential treatment of sexual dysfunction

Couples' treatment for sexual problems and other innovative approaches to improving sexual health for men and women are on the agenda of sexual medicine experts.

23 Jun 2009

Bartering for health care rises

With no health insurance and little money, Gilberto Carrasco, a Reno, Nev., auto mechanic, didn't see much point in getting a physical. At 50, he felt healthy and couldn't afford treatment even if a doctor found a medical problem.

17 Jun 2009

Warning on athletes’ use of prescription drugs

Athletes could be putting their lives at risk by doping themselves with powerful prescription drugs, a leading academic has warned. Professor Declan Naughton, Professor of Biomolecular Sciences at Kingston University in South West London, cautioned sportsmen and women against trying to improve their performance by taking drugs known as nitrites without clinical supervision.

28 May 2009

Pfizer to give away 70 of its most widely prescribed drugs to those who lost jobs

Pfizer on Thursday announced a new program that would provide some of its existing customers access to more than 70 types of medications at no cost if they have recently been laid off or lost their prescription drug coverage, USA Today reports. The program -- called MAINTAIN, or Medicines Assistance for Those who Are in Need -- will begin July 1.

15 May 2009

Protein that regulates hormones critical to women's health found in pituitary

University of Wisconsin-Madison researchers have solved the mystery surrounding a "rogue protein" that plays a role in the release of neurotransmitters and hormones in the brain.

12 Jan 2009

Sildenafil may help protect heart from high blood pressure damage

Johns Hopkins and other researchers report what is believed to be the first direct evidence in lab animals that the erectile dysfunction drug sildenafil amplifies the effects of a heart-protective protein.

5 Jan 2009

Scientists map steps to block enzyme phosphodiesterase 5's action in heart failure

Taking a cue from the way drugs like Viagra put the biological brakes on a key enzyme involved in heart failure, scientists at Johns Hopkins have mapped out a key chemical step involved in blocking the enzyme.

12 Nov 2008

Exercise-induced fatigue in muscular dystrophies, study points to potential new therapies

A University of Iowa study suggests that the prolonged fatigue after mild exercise that occurs in people with many forms of muscular dystrophy is distinct from the inherent muscle weakness caused by the disease.

26 Oct 2008

New Zealand issues warning on 'dodgy' treatments for erectile dysfunction

New Zealand's Director-General of Health, Stephen McKernan, is warning people about the potential health dangers associated with three products promoted and sold in New Zealand for sexual enhancement or the treatment of erectile dysfunction which may contain an undeclared therapeutic substance.

8 Aug 2008

Viagra and Levitra ED drugs shown to allow more chemo to reach brain tumors

In a study using laboratory animals, researchers found that medications commonly prescribed for erectile dysfunction opened a mechanism called the blood-brain tumor barrier and increased delivery of cancer-fighting drugs to malignant brain tumors.

28 Jul 2008

U.S. authorities seize Xiadafil VIP tablets after company refuses to recall product

At the request of the U.S. Food and Drug Administration, U.S. Marshals seized nearly $74,000 worth of Xiadafil VIP tablets, Lots 6K029 and 6K209-SEI, distributed by SEI Pharmaceuticals, Inc. of Miami, Fla. Although marketed as a dietary supplement to treat erectile dysfunction (ED) and for sexual enhancement, these lots represent an illegally marketed drug containing an undeclared ingredient.

24 Jul 2008

Scientists predict new uses for existing drugs from their side effects

Researchers from the European Molecular Biology Laboratory (EMBL) discovered a new way to make use of drugs' unwanted side effects. They developed a computational method that compares how similar the side effects of different drugs are and predicts how likely the drugs act on the same target molecule. The study, published in Science this week, hints at new uses of marketed drugs.

10 Jul 2008

Watermelon provides Viagra-like effects

A cold slice of watermelon has long been a Fourth of July holiday staple. But according to recent studies, the juicy fruit may be better suited for Valentine's Day.

30 Jun 2008

Ranbaxy and Pfizer settle on Lipitor patent litigation

Ranbaxy Laboratories Limited (Ranbaxy), announced today that it has entered into an agreement with Pfizer Inc. to settle most of the patent litigation worldwide involving Atorvastatin (Lipitor), the world's most-prescribed cholesterol-lowering medicine.

19 Jun 2008

Stiff competition for Viagra in the pipeline

Scientists in Scotland are in the process of developing a drug which could offer stiff competition to the drug Viagra.

20 May 2008

Erection problems may signal serious heart disease

Erectile dysfunction is always a matter of the heart, but new research shows that more than romance is at stake. Two new studies of men with type 2 diabetes found that erectile dysfunction (ED) was a powerful early warning sign for serious heart disease, including heart attack and death.

19 May 2008

Sildenafil could become a treatment for Duchenne muscular dystrophy

A new study appears to have found another use for the drug Viagra other than for treating problems such as erectile dysfunction.

15 May 2008

Drug therapy for phenylketonuria reverses heart damage

A pricy drug used to treat a rare but well-known genetic disorder may hold wider promise as a treatment for millions of Americans with potentially lethal enlarged hearts, due mainly to high blood pressure, a study from Johns Hopkins shows.

13 May 2008

Women's sexual disorders get medical attention in new Stanford program

Medicine is finally opening the bedroom door to women. When the male erectile dysfunction drug Viagra was approved by the U.S. Food and Drug Administration in 1998, many middle-aged men experienced a new lease on life, or at least on life in the bedroom.

19 Mar 2008