Zombie Eyes: What Causes Dark Circles Under Eyes And 6 Foods To Erase Them. Whether you have a full night of shut-eye or havenât slept in 24 hours, you find yourself plagued with dark circles. Concealers, eye creams, and eye exercises seldom tone down the shadowy effect of the dark or blue-black tints under your eyes. Now, before you succumb to the tall tales of an infomercial product, itâs important to know first what causes them.
Why Acyclovir Helps Cold Sores. Zovirax (Acyclovir 5 percent cream) is also FDA-approved for the treatment of recurrent cold sores. In studies, frequent application of the cream reduced the time to healing by about 12 hours.
Even so, some of the older antihistamines, such as brompheniramine and chlorpheniramine, can bring relief. Newer antihistamines like fexofenadine and loratidine have not been shown to work for cold symptoms. Are Decongestants and Antihistamines Safe? A decongestant called phenylpropanolamine (PPA) was used for years as an ingredient in many cold drugs to clear up a stuffy nose.