Viagra could reduce men's fertility - New Scientist

The team is now studying the effects of Viagra on the sperm of men actually taking the drug. The initial findings in 17 men show Viagra does speed up sperm. Advertisement

Does erectile dysfunction affect sperm count? - Medical News Today

Erectile dysfunction (ED) does not necessarily cause a low sperm, but some conditions can cause both ED and low sperm count. Learn more.

Does Sildenafil impact your fertility? - PostMyMeds

CAN SILDENAFIL LOWER YOUR SPERM COUNT? ... Viagra) can affect eggs being fertilised. There were some studies carried out in 2002 to state that the drug may affect the sperm's ability to fertilise, however, the NHS has said that there is no solid evidence proving this theory [2].

Can Drugs Lower Your Sperm Count? - Cleveland Clinic Health Essentials

"Long-term opioid use can disrupt the signals that control testosterone production, which can cause low testosterone and decrease both the quantity and quality of your sperm," Dr. Vij explains.

Does Viagra affect fertility? - Give Legacy

These factors play an important part in determining how effectively a sperm can swim to fertilize an egg. ... prolonged sexual abstinence of at least 7 days affected all sperm parameters, with volume and count increasing as swimming ability and shape decreased in quality. Thus, the blog noted, sildenafil-based drugs like Viagra can have a ...

(PDF) 216. The effects of Viagra on sperm function and ... - ResearchGate

The effects of Viagra on sperm function and early embryo development. August 2004; ... was added in vitro at the lower concentration of 2.5 mmol/L. However, Smith and Scott (13) found inhibitory ...

Viagra may harm fertility - Nature

Viagra may affect male fertility, warns new research from Queen?s University Belfast. The famous impotence drug appears to scupper sperm and reduce pregnancies in mice, in contrast to human ...