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Contraceptive injection for men
We tell you several facts that you probably did not know about the method that promises to revolutionize the spectrum of contraceptive methods
In the eighteenth century condoms were already available in the market in different qualities and forms, the German doctor Richard Richter started modern intrauterine contraception in 1928 and it has been more than half a century since the use of the pill in the United States was approved.
However, today, in full 2016, the range of options for birth control is not much greater.
Therefore, the male contraceptive promises to be a revolution, since it will allow men to participate more in family planning.
It is expected that the first product of this type to go on the market is Vasalgel, and that it will do so by 2018. We tell you what is known about the greatest novelty in contraception of the last 55 years.
1. What is it?
It is a non-hormonal contraceptive for men designed by the Parsemus Foundation, a non-profit medical research organization in the United States whose objective is “to find low-cost solutions ignored by the pharmaceutical industry”.
Vasalgel, the product they are focusing all their efforts on, is not a pill, but a synthetic injectable hydrogel.
Parsemus acquired the patent for a method that the team of Dr. Sujoy K. Guha was already investigating in India, the Reversible Inhibitor and with Guide of Espema (RISUG, for its acronym in English).
2. How does it work?
A dose of this synthetic gel is injected into the tube through which the sperm passes, just at the end where it joins the scrotum. That is, the injection is not applied directly to the penis.
The process is completed in about 15 minutes and once injected, the gel is fixed and acts as a filter, allowing the passage of fluid but not the sperm. Therefore, it does not preclude ejaculation or orgasm, says the Parsemus Foundation.
3. How effective is it?
According to the Parsemus Foundation, it is as effective as vasectomy, a generally irreversible procedure that consists in the sectioning and ligation of the vas deferens. That is an efficiency greater than 99%.
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The organization bases such affirmation in clinical tests carried out with animals. “In a one-year trial with rabbits there was no transmission of sperm and we also observed that effectiveness in baboons,” the foundation explains on its website.
4. How is it different from female contraceptives?
Since it is not a hormonal method, Vasalgel does not have the side effects that such treatments usually have for women.
And is that the contraceptive pill can cause migraines, weight changes and decreased libido, IUD pelvic discomfort and increased bleeding.
For its part, the vaginal ring and the adhesive patch can cause irritation in areas of the body in contact with the device.
In addition, several studies published in the British Medical Journal and the Spanish Heart Foundation (FEC) have warned that women who use hormonal contraceptives are at increased risk of thrombosis.
5. Does it replace the condom?
No, because not being a barrier method, it does not protect against sexually transmitted diseases.
Therefore, it is proposed as a substitute for female contraception or as complementary treatment.
6. Is it irreversible?
Unlike vasectomy – it consists of the section and ligature of the vas deferens -, this method is reversible in all cases, besides being less invasive.
The filter gel will remain in place until ten years after being injected. So if the man wanted to have children at that time, he would have to undergo another outpatient intervention.
The restoration of the complete flow of sperm “is achieved by removing the Vasalgel from the vas deferens with the injection of a solution of baking soda,” explains the Parsemus Foundation on its website.
At least that is what the studies carried out so far have shown, says the foundation. The last came to light this May and was made with rabbits.
7. So, why is not it available yet?
The Parsemus Foundation says that it is carrying out the necessary tests so that it goes on the market “with all the guarantees” in 2018. But for this it needs the approval of the United States Federal Food and Drug Administration (FDA, for its acronym in Spanish). English), something that has not happened yet.
Such tests are expensive, and so far no large pharmaceutical company has invested in the development of the method.
“Maybe it’s because it’s more lucrative to sell hormonal birth control methods for women,” says the Parsemus Foundation, who says he embarked with Vasalgel on a “social adventure.”
“Large pharmaceutical companies control most of the market in developed countries, so selling a method for women’s partners cannibalize existing sales.”
That same opinion is shared by several experts, including the legendary chemist Carl Djerassi, known for his contributions to the development of the contraceptive pill.
“The resistance (of the big pharmaceutical companies to investigate and finance male contraceptives) has nothing to do with science,” the Austrian-German said in an interview in 2014.
“We know perfectly how to develop them, but there is not a single pharmaceutical company that wants to get involved in it, for economic and sociopolitical rather than scientific reasons,” he said. “They are more focused on the population increase in geriatric age and diabetes, obesity, cardiovascular diseases, Alzheimer’s.
Thus, the Parsemus Foundation says that the Vasalgel is a “social adventure”. But once it goes on the market, will men be willing to use it?