The Difference Between Tylenol, Aspirin, Advil, and Aleve

Mario Tama/Getty Images
Mario Tama/Getty Images

It’s the morning after a wild night out. You stumble to the medicine cabinet and stare blearily at the array of over-the-counter painkillers, wondering which one will bring the quickest relief (and why all the labels have to be so darn bright). Fortunately, you’ve taped this article to the cabinet door, and instead of guessing, you can just check our handy guide below.

TYLENOL (ACETAMINOPHEN)

There are two main types of non-prescription painkillers: acetaminophen and non-steroidal anti-inflammatory drugs (NSAIDs), which includes basically everything that is not acetaminophen. Acetaminophen is the most popular pain-relieving option the world over, and it works by encouraging the brain to stop sending pain signals. 

Best for: Headaches and muscle aches

Not great for: Inflammation and joint pain

Watch out for: Taking too much acetaminophen, or mixing acetaminophen and alcohol, can lead to liver damage, and acetominophen is one of the drugs most frequently involved in overdose. Check the bottle to find out the maximum safe dose, and take it seriously.

ASPIRIN (ACETYLSALICYLIC ACID)

Aspirin and other NSAIDs work by decreasing your body’s production of enzymes that create pain-related chemicals. When prescribed by a doctor and taken every day, a small dose of aspirin can help lower the risk of heart attack or stroke for some people.

Best for: Reducing cardiovascular risk

Not great for: Intense pain  

Watch out for: Aspirin can be hard on the gut, liver, and kidney. Talk to your doctor to find out if it’s safe for you. Use caution when giving aspirin to children.

ADVIL AND MOTRIN (IBUPROFEN)

Ibuprofen is a pretty versatile drug, with the power to help with a broad range of aches, pains, and other complaints. 

Best for: Hangover (there you go!), menstrual cramps, sore or injured muscles, sinus pain, earaches, and toothaches

Not great for: Chronic headache

Watch out for: Ibuprofen carries most of the same risks as aspirin but is often available in higher doses, which can be even harder on your body. It’s also fast-acting and fast-fading, which might lead to more frequent doses.

ALEVE (NAPROXEN)

Naproxen is slow to kick in but longer lasting than ibuprofen, making it a good choice for people with mild-to-moderate chronic pain.

Best for: Inflammation, hangover, lasting headache, arthritis

Not great for: Quick pain relief

Watch out for: Like all NSAIDs, naproxen carries some cardiovascular risk and is associated with stomach distress.

THE UPSHOT

Taking too much of any painkiller is bad for you, and not just in the ways we’ve already discussed. People who rely on over-the-counter medication for daily headaches often find that the medication itself can cause additional headaches, called rebound headaches. If you find yourself taking over-the-counter drugs for the same reason every day, it’s time to talk to your doctor about the underlying issue and other treatment options.

A Simple Skin Swab Could Soon Identify People at Risk for Parkinson's

iStock.com/stevanovicigor
iStock.com/stevanovicigor

More than 200 years have passed since physician James Parkinson first identified the degenerative neurological disorder that bears his name. Over five million people worldwide suffer from Parkinson’s disease, a neurological condition characterized by muscle tremors and other symptoms. Diagnosis is based on those symptoms rather than blood tests, brain imaging, or any other laboratory evidence.

Now, science may be close to a simple and non-invasive method for diagnosing the disease based on a waxy substance called sebum, which people secrete through their skin. And it’s thanks to a woman with the unique ability to sniff out differences in the sebum of those with Parkinson's—years before a diagnosis can be made.

The Guardian describes how researchers at the University of Manchester partnered with a nurse named Joy Milne, a "super smeller" who can detect a unique odor emanating from Parkinson's patients that is unnoticeable to most people. Working with Tilo Kunath, a neurobiologist at Edinburgh University, Milne and the researchers pinpointed the strongest odor coming from the patients' upper backs, where sebum-emitting pores are concentrated.

For a new study in the journal ACS Central Science, the researchers analyzed skin swabs from 64 Parkinson's and non-Parkinson's subjects and found that three substances—eicosane, hippuric acid, and octadecanal—were present in higher concentrations in the Parkinson’s patients. One substance, perillic aldehyde, was lower. Milne confirmed that these swabs bore the distinct, musky odor associated with Parkinson’s patients.

Researchers also found no difference between patients who took drugs to control symptoms and those who did not, meaning that drug metabolites had no influence on the odor or compounds.

The next step will be to swab a a much larger cohort of Parkinson’s patients and healthy volunteers to see if the results are consistent and reliable. If these compounds are able to accurately identify Parkinson’s, researchers are optimistic that it could lead to earlier diagnosis and more effective interventions.

[h/t The Guardian]

World’s Oldest Stored Sperm Has Produced Some Healthy Baby Sheep

A stock photo of a lamb
A stock photo of a lamb
iStock.com/ananaline

It’s not every day that you stumble across a 50-year-old batch of frozen sheep sperm. So when Australian researchers rediscovered a wriggly little time capsule that had been left behind by an earlier researcher, they did the obvious: they tried to create some lambs. As Smithsonian reports, they pulled it off, too.

The semen, which came from several prize rams, had been frozen in 1968 by Dr. Steve Salamon, a sheep researcher from the University of Sydney. After bringing the sample out of storage, researchers thawed it out and conducted a few lab tests. They determined that its viability and DNA integrity were still intact, so they decided to put it to the ultimate test: Would it get a sheep pregnant? The sperm was artificially inseminated into 56 Merino ewes, and lo and behold, 34 of them became pregnant and gave birth to healthy lambs.

Of course, this experiment wasn’t just for fun. They wanted to test whether decades-old sperm—frozen in liquid nitrogen at -320°F—would still be viable for breeding purposes. Remarkably, the older sperm had a slightly higher pregnancy rate (61 percent) than sheep sperm that had been frozen for 12 months and used to impregnate ewes in a different experiment (in that case, the success rate was 59 percent).

“We believe this is the oldest viable stored semen of any species in the world and definitely the oldest sperm used to produce offspring,” researcher Dr. Jessica Rickard said in a statement.

Researchers say this experiment also lets them assess the genetic progress of selective breeding over the last five decades. “In that time, we’ve been trying to make better, more productive sheep [for the wool industry],” associate professor Simon de Graaf said. “This gives us a resource to benchmark and compare.”

[h/t Smithsonian]

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