Pfizer says not part of failed Dutch pregnancy trial

July 26, 2018

Pfizer Thursday insisted its anti-impotency Viagra drug was not used in a Dutch study seeking to help pregnant women whose babies were not growing properly, halted after 11 infants died.

"Pfizer was never involved in this study and neither supplied drugs or funding to it," the company said in a statement sent to AFP.

Amsterdam University Medical Centre, which carried out the research along with 10 other hospitals in the Netherlands, announced Monday the study had been stopped after the deaths of the babies, and after others developed lung disease having been born prematurely.

It said 183 women had been involved in the trial launched in 2015, in which 93 were given the generic anti-impotency drug sildenafil. The other 90 women were given a placebo.

None of the mothers were affected by the drug.

But out of the 93 women using the drug, 19 babies died, 11 of them possibly due to a form of in the lungs which may be linked to the drug.

The university said in a tweet that sildenafil "is also known as Viagra" but in an updated statement stressed "neither Pfizer Viagra or Pfizer Sildenafil were used as medicines in this study".

"The results of the study... are extremely sad and disappointing for the people involved and the researchers," Pfizer added.

It stressed that Viagra is a drug to treat adult erectile dysfunction and its safety and effectiveness had been proven in more than 15,000 patients.

The Dutch scientists had hoped sildenafil's properties in dilating blood vessels could help promote a better flow of blood into the placenta and "stimulate the growth of the unborn child" whose development had been retarded in the mother's womb, the hospital said in a statement.

Explore further: Dutch halt Viagra in pregnancy trial after 11 babies die

Related Stories

Dutch halt Viagra in pregnancy trial after 11 babies die

July 24, 2018
Dutch doctors and scientists have halted a ground-breaking study into using Viagra to help pregnant women whose babies were not growing properly in the womb after 11 infants died.

Canada high court voids Pfizer's Viagra patent

November 8, 2012
Canada's top court on Thursday stripped Pfizer of its patent for Viagra, saying the pharmaceutical giant failed in the patent to identify the active compound in the drug.

Pfizer, Teva reach deal to allow generic Viagra

December 17, 2013
Pfizer says it reached a settlement with Teva Pharmaceuticals that allows the generic drugmaker to launch a copycat version of its popular erectile dysfunction drug Viagra in 2017.

Study reveals Viagra to be 'ineffective' for fetal growth restriction

December 8, 2017
A University of Liverpool led international clinical trial has found an anti-impotence drug to be ineffective at improving outcomes for pregnancies complicated by fetal growth restriction.

Viagra turns 20: chronicle of a global success

March 26, 2018
Launched in the United States 20 years ago, Viagra has sold in the billions and become an unexpected source of revenue for its maker Pfizer, as well as copycats worldwide.

Viagra to be sold without prescription in Britain

November 29, 2017
Britain is to become the first country in the world where the erectile disfunction drug Viagra can be bought without the need for a doctor's prescription from 2018, its maker Pfizer said.

Recommended for you

US approves first generic competitor to Mylan's EpiPen

August 16, 2018
US regulators Thursday approved the first generic alternative for the EpiPen, a life-saving emergency allergy medicine, two years after soaring prices for the original version owned by Mylan stoked controversy.

Study: What patients really think about opioid vs non-opioid medications for chronic pain

August 14, 2018
Prescriptions of opioids for chronic pain has increased dramatically since the 1990s in spite of their known harms. Despite a shortage of scientific studies on the long-term effectiveness of opioids such as morphine, oxycodone ...

Doctors nudged by overdose letter prescribe fewer opioids

August 9, 2018
In a novel experiment, doctors got a letter from the medical examiner's office telling them of their patient's fatal overdose. The response: They started prescribing fewer opioids.

Benzodiazepine and related drug prescriptions have increased among young people in Sweden

August 7, 2018
The prevalence rate of prescriptions for benzodiazepines and benzodiazepine-related drugs (BZD)—medications used to treat anxiety, insomnia, epilepsy and other neuropsychiatric conditions—increased by 22% between 2006 ...

Unwise opioids for wisdom teeth: Study shows link to long-term use in teens and young adults

August 7, 2018
Getting wisdom teeth removed may be a rite of passage for many teens and young adults, but the opioid painkiller prescriptions that many of them receive could set them on a path to long-term opioid use, a new study finds.

Behavioral nudges lead to striking drop in prescriptions of potent antipsychotic

August 1, 2018
A study led by Columbia University's Mailman School of Public Health has found that letters targeting high prescribers of Seroquel (quetiapine), an antipsychotic with potentially harmful side effects in the elderly, significantly ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.