The Chinese herbal supplement, “Nin Jiom Pei Pa Koa,” is in large demand by U.S. citizens due to remarkable effects it has in treating the common cold.

People in the U.S. are going through the worst flu epidemic seen in recent years this winter due to which nearly 56,000 people in the country’s 49 states have died of flu.

As antiviral drugs including Tamiflu were almost sold out in the U.S., American people are eager to purchase the aforementioned Chinese herbal supplement after it was introduced in an article “Herbal Supplement Has Some New Yorkers Talking, Instead of Coughing” published in the Wall Street Journal.

According to the article, Alex Schweder, an architect and professor of design at Pratt Institute, has been super sick for a week and half and couldn’t stop coughing, but he just stopped coughing only 15 minutes after taking the supplement.

American actor Matthew Modine also noted that his cough was obviously relieved after taking the supplement. Many consumers in the U.S. all expressed their love for it, and some even add the supplement to their food.

The Chinese herbal supplement is a minty, thick and sweet syrup that treats cough and sore throat, usually sold in 300-milliliter bottles.

Due to popularity of the herbal supplement among American consumers, its price surged to even $70 from $10. Despite the high price, the supplement is still in short supply.

As for the crave wave related to the herbal supplement, the U.S. Food and Drug Administration reminds the public to still follow the doctor’s advice before taking the supplement in case of overdose or potential health risks.