The male contraceptive injections
One of the most recent concepts introduced in the United States is that of the male contraceptive injections. The idea was visualised by an Indian scientist. It consists of an injection which reduces the sperm count and disables the spermatozoa which traverses through the sperm pathways. Actually, the injections comprise of a number of chemicals which formulate gels against the sperms. The life of this gel is between 10 to 15 years. Thus, once injected, the injection solution remains viable for a long time. So far, the results have been 100% effective.
For over a decade now, this male pregnancy shot is on trial in India. Now, the project has been kick started in the United States as well. Initially, the sperm stunting potential of the injection was considered as a toxic side-effect but when experimented by laboratories, the idea appears lucrative enough.
But now, scientists have revealed a male contraceptive injection could soon be available.
The shot, called Vasalgel, is non-hormonal and long-acting – and has been shown to block sperm for up to 12 months.
Clinical testing of the shot is set to begin this year, according to the non-profit Parsemus Foundation, of Berkeley, California.

Scientists have discovered several possible methods to control male fertility in the past few decades – but none have made it to market thus far.
Furthermore, research has focused on hormonal approaches – even though many men favor non-hormonal options, due to side effects and safety risks.
But in a new study, Parsemeus confirmed that Vasalgel has the potential to fill the gap in the male contraception market.
The shot consists of styrene-alt-maleic acid (SMA) that is dissolved in dimethyl sulfoxide.
Vasalgel could be the first long-acting, non-hormonal, potentially reversible male contraceptive to reach market, researchers noted.

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