The Amount Of Caffeine Is Not Specified In Dietary Supplements For The Military – Part 2 of 3
In the worst-case scenario, people could become jittery and even develop rapid heartbeats if they use the supplements in conjunction with other caffeine products such as drive drinks or coffee, said Dr John Higgins, who studies caffeine as the chief of cardiology at Houston’s Lyndon B Johnson General Hospital. The study has some holes, however. For one, it didn’t pigeon-hole the 31 supplements that it examined.
The researchers said only that they’re the most popular supplements sold as pills on military bases with labels that indicate that they embrace either caffeine or herbal ingredients that include caffeine. Of the 31 supplements, 20 listed caffeine on their labels. Of those 20, only nine correctly listed the amount, according to the researchers. Five listed amounts between 27 percent and 113 percent off from the existent amount.
Six products listed caffeine as an ingredient but didn’t say how much. The researchers found that they had 210 to 310 milligrams per serving – the same quantity that is in two to three cups of coffee. People often drink coffee or take energy supplements to become more alert, and Cohen said it’s true that the caffeine in two to three cups of coffee can advance performance. But people lose the boost at about five cups. What to do? Higgins, the Texas cardiologist, said manufacturers stress to be required to state properly how much caffeine is in supplements, and the amounts need to be independently verified.