Register for an account

X

Enter your name and email address below.

Your email address is used to log in and will not be shared or sold. Read our privacy policy.

X

Website access code

Enter your access code into the form field below.

If you are a Zinio, Nook, Kindle, Apple, or Google Play subscriber, you can enter your website access code to gain subscriber access. Your website access code is located in the upper right corner of the Table of Contents page of your digital edition.

Health

What Is This? A Psychedelic Peacock?

whatis-0.jpg

Newsletter

Sign up for our email newsletter for the latest science news

These are crystals of the antiarrhythmic drug, Quinidine, which was created to treat abnormal heart rhythms. Studies have shown that some antiarrhythmic drugs can increase the risk of death from heart malfunctions, and so the drug is used only to treat life-threatening arrythmias. Quinidine and its stereoisomer, quinine (the stuff that is found in tonic water) have been shown to ward off malaria in certain scenarios.

2 Free Articles Left

Want it all? Get unlimited access when you subscribe.

Subscribe

Already a subscriber? Register or Log In

Want unlimited access?

Subscribe today and save 70%

Subscribe

Already a subscriber? Register or Log In