 [ Symptoms ] does cardio equipment accurately calculate the number of calories you have burned [ Disease ] real testosterone supplements are a controlled substance that can only be obtained by prescription the so called male enhancement products you hear advertised cannot by law contain testosterone or any other controlled substance however a number of these male enhancement pills have been recalled and confiscated over the past few years by the u s food and drug administration fda because they contained illegal and unlabeled amounts of prescription drugs designed to treat erectile dysfunction this tells me that these supplements may not be safe to take it may be difficult to tell exactly what is in them if you believe you have low testosterone or have male performance issues i suggest you consult a medical professional he or she will treat your concerns with sensitivity and dignity many of these problems can be effectively treated and no low t is not an epidemic men naturally produce less testosterone as they age for some men this causes problem getting or sustaining an erection loss of libido and loss of energy if you fall into this category you certainly may want to seek treatment because testosterone therapy has been shown to improve these symptoms best wishes to you