First of all, let me state that my conscience is perfectly clear:

However, unlike yours truly, if you have an impure mind I suggest you take it up with Merriam-Webster.

Having dispensed with that trivial distraction, can someone please explain to me what is going on below? 

Many have questioned the efficacy of the common antidepressant medications known as selective serotonin reuptake inhibitors (SSRIs).

They don't work for many people, studies have found, and even when they work they lose effectiveness quickly. Psychiatric medications have also been the common denominators in tragedies like mass shootings, which has increased concern about whether or not it is better to be depressed than homicidal.

The U.S. Food and Drug Administration has approved Neupogen,  the first approved drug to treat the deleterious effects of radiation exposure following a nuclear incident. 
The U.S. Centers for Disease Control and Prevention estimates that drug-resistant bacteria sicken two million U.S. residents annually and cause about 23,000 deaths. Federal officials have called combating antibiotic resistance a national priority.

To aid in that effort, a second-generation antibiotic has shown early effectiveness against common bacterial infections that pose a serious health threat to children and adults. Researchers discovered it by changing the chemical structure of an old antibiotic named spectinomycin, a safe but weak drug first introduced in the 1960s.
Around a quarter of people experience depression at some point in their lives, two-thirds of whom are women.

Each year more than 11 million working days are lost in the UK to stress, depression or anxiety and there are more than 6,000 suicides. The impact of depression on individuals, families, society and the economy is enormous.

Dogs who suffer with separation anxiety become more optimistic when taking the animal equivalent of Prozac during behavioral treatment, according to a paper in which the authors say they revealed how the animals feel during the clinical treatment of behaviors associated with negative emotions.
The use of novel psychoactive substances, synthetic compounds with stimulant or hallucinogenic effects, is on the rise and the diversity and breadth of these substances - a change in one atom means an illegal drug is no longer illegal - has led policymakers, law enforcement officers, and healthcare providers to feel overwhelmed. 

A recent review has led to proposing a "forecasting method" for policymakers and researchers to focus on what is likely to happen with new recreational drugs. Dr. John Stogner of UNC Charlotte says a five step forecasting method will rely on the availability of a potential user base, the costs of the drug (legal and otherwise), the subjective experience, the substance’s dependence potential, and the overall ease of acquisition.

The new 9-valent human papillomavirus vaccine, can potentially prevent 80 percent of cervical cancers in the United States if given to all 11- or 12-year-old children before they are exposed to the virus, according to a seven-center study published in the Journal of the National Cancer Institute

Generic drugs are the same as a name brand. The only difference is that a generic company does not research or clinical trials and since the product is outside patent, they only have the cost of manufacturing, so costs are lower and the product is cheaper.

Yet we are increasingly in a precautionary principle world, in everything from vaccines to food, so it is little surprise that patients prefer name brand drugs more. Though large pharmaceutical companies are being attacked in a culture war, they are still considered more trustworthy than a generic, which most people equate with lower quality materials.

There is always interest in exploring new therapeutic uses for existing drugs, because existing medications are probably generic, and therefore less expensive because generic companies don't have to do any creative science or fund clinical trials, and popular drugs already have known side effect profiles.