Not really new, but its unpopular. This is actually because it is rendered illegal by some countries. Rohypnol is a drug that is dangerous. When consumed, it takes some few minutes for the person to become weak and unstable. Sadly, rapists and armed robbers have started using it to attack people. One other deadly thing you must know about Rohypnol is that it causes memory loss, if a rapist uses it on a girl and finally rapes her, she may never remember anything that happened again, therefore, she cannot provide any useful information for investigation. Rohypnol also prevents pregnancy, research shows that girls who repeatedly consume Rohypnol may not be able to bear children.
MORE INFO ON ROHYPNOL
Rohypnol is a brand name for flunitrazepam (a benzodiazepine), a very potent tranquilizer similar in nature to valium (diazepam), but many times stronger. The drug produces a sedative effect, amnesia, muscle relaxation, and a slowing of psychomotor responses. Sedation occurs 20-30 minutes after administration and lasts for several hours. The drug is often distributed on the street in it's original "bubble packaging" which adds an air of legitimacy and makes it appear to be legal.
It is known by several street names: Roachies, La Roche, Rope, Rib, Roche, Rophies, Roofies, Ruffies, Mexican valium, or the "forget (me) pill." Rohypnol is especially dangerous because it is inexpensive; a tablet may cost $1 to $5. This makes it popular in high schools, college campuses, clubs, bars, and at private parties.
Rohypnol became (in) famous because it can cause memory "blackouts," periods of memory loss that follow ingestion of the drug with alcohol. Victims who have been raped with Rohypnol have report waking up in strange rooms, with or without clothing, sometimes with a used condom on the bed, occasionally with bruises on their body... but they have no memory of the previous night.
A Common Scenario:
• The victim is at a party or bar and has something to drink. The attacker somehow slips a Rohypnol tablet into the liquid - perhaps when the victim turns their head or leaves their drink to go to the bathroom.
• About twenty minutes after finishing their drink, the victim begins to feel very disoriented, or "drunk." Victims of Rohypnol have often only had one or two drinks, and they remember feeling much more drunk than they should have been.
• The attacker volunteers to escort the "sick" or "drunk" person home. Once out of the public eye, the attacker may take the victim to a hotel, to the victim's home, or to other places.
• Several hours later, the victim wakes up feeling very disoriented. They can't remember what happened after they left the party, but they may find evidence that something was done to their body while they were "asleep."
• Many victims raped under the influence of Rohypnol are unsure whether or not they were raped, because they have no memory of the event. It can take several days to piece together a story from eyewitness reports.
• Rohypnol has been used to rape both men and women.
What Rohypnol Looks and Feels Like:
• Rohypnol is similar to Valium but about 10 times as strong. In Europe and South America, it is a prescription drug used as a preanesthetic agent and as a potent sedative.
• Rohypnol comes as a small pill that can be dropped into the drink of an unsuspecting victim. The pill can dissolve in either alcoholic or non-alcoholic drinks, and the drug is odorless and tasteless.
• Initially, Rohypnol causes muscle relaxation, dizziness, and headaches, slows psychomotor responses, and lowers inhibitions. Victims may have difficulty moving or speaking. Victims often remember the effects of the drug as a feeling of being "drunk." Rohypnol takes 20-30 minutes to take effect.
• Rohypnol has a synergistic effect with alcohol. When taken with alcohol, Rophypnol can cause severe disorientation and a loss of memory. These memory blackouts are typically 8-12 hours long. The victim may or may not appear "awake" during this time.
• Victims often feel nauseous the day after they have received Rohypnol.
• Rohypnol is a physically addictive drug. Repeated use will lead to addiction.
• There are multiple forms of the drug on the market. The original tablets, marketed by the pharmaceutical company Hoffman La Roche (see picture on right), look like aspirin and dissolve rapidly in liquid. In response to widespread abuse of this drug, Hoffman La Roche changed the tablets; the new tablets dissolve more slowly and will turn a drink blue. "Copycat" flunitrazepam tablets have also been produced by pharmaceutical companies in South Africa, South America, and possibly Egypt-the copycat tablets are reddish-brown to white and dissolve well in liquids.
• Rohypnol can be found in large urban areas and even in rural areas. The drug is most common in the southern and eastern parts of the U.S., where there have been several widely publicized seizures and rape cases.
• A less common use of Rohypnol: the tablets are crushed, often mixed with other drugs, and snorted. This route of administration is more common for recreational drug users than for rapists.


Reducing Your Risk:
• Never leave your drink unattended. If you have to go to the bathroom, either finish your drink or throw it away.
• Beverages that come in sealed containers (unopened cans or bottles) are much safer than mixed drinks.
• If you order a mixed drink, watch the person who mixes it.
• Do not take any open beverages, including alcohol, from someone you do not know well and trust.
• Never drink anything out of a common punch bowl.
• If someone offers to buy you a drink, go up to the bar with them to accept the drink.
• Subscribe to the "buddy system": always party with one or more friends, and keep an eye on each other. If someone begins to appear "too drunk," get them to a safe place. More than one attempted Rohypnol rape has been prevented by watchful friends.


source:
http://dawn.thot.net/rohypnol.html

Thank you so much bro

But this is not entirely correct. In fact it's a drug (rohypnol also known as flunitrazepam) given to insomnia patient to induce sleep. This is why rapist use it. But it doesn't cause sterility. You can check Wikipedia
https://en.m.wikipedia.org/wiki/Flunitrazepam
And
https://www.hoax-slayer.net/progesterex-sterility-date-rape-drug-hoax/