To select the best testosterone boosters of 2026, we worked with a certified nutrition coach to test and evaluate over 140 different supplements. Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition. As men age, testosterone levels naturally decline, which can affect strength, metabolism, and vitality. However, these levels may fall below average, resulting in adverse symptoms. A man with low testosterone may experience symptoms such as a low sex drive, erectile dysfunction, tiredness, and low mood. Plus, they will only indicate whether a person’s levels are high or low and are unlikely to indicate the cause. However, the results of at-home tests should not replace care from a healthcare professional. A doctor will discuss what else may be causing their symptoms and order appropriate tests. At-home tests or healthcare professionals will likely recommend testing in the morning to gain the most accurate result. You should not use this information as self-diagnosis or for treating a health problem or disease. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. For additional information about a product, please contact the manufacturer. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. Power your day with the multivitamin engineered for men who demand more from their nutrition. It’s important to remember that supplementation alone won’t build muscle—consistent strength training with progressive overload and a balanced diet are both vital to maximizing your gains. That said, while this product provides 91% of your daily zinc value, this ingredient alone won’t produce muscle gain. Still, he hedged his recommendation of the product as not being necessary for all potential users. "Swolverine’s ZMT is a combination testosterone booster and nighttime sleep aid. "I took Swolverine’s ZMT supplement about 30 minutes before bed," he said. When it comes to actual function, though, Pete was happy with the results, rating the side effects a 5 out of 5. This product involves 6 vegetarian capsules per serving, though, on the bright side, you only need to take the serving once before bed. After then cleaning your finger with the alcohol wipe provided in the kit, it’s time to use a lancet to make a small incision in your fingertip. Lois Zoppi tested the at-home testosterone kit by LetsGetChecked. Results will appear on a person’s online account within 2 to 5 days. Upon receiving the kit, an individual should follow the instructions to activate the test on the company’s website and take their sample in the morning. Clinical trials of common ingredients typically find inconclusive results or only small effects on testosterone in healthy men. Since ingredients can vary in these types of supplements, your doctor can help with suggestions on the most optimal product. D-Aspartic Acid may help raise testosterone levels and increase muscle mass and strength when taken consistently, over time. "That said, most of these benefits occur in older men with lower testosterone levels and generally don’t have too much of an effect on healthy individuals with normal testosterone levels." "Two of the ingredients in this formula, the ashwagandha and the tongkat ali (Eurycoma longifolia) have the strongest clinical data supporting small to moderate increases in testosterone," Pete said. "Overall, if someone already has normal testosterone levels and focuses on nutrition and high quality sleep then this supplement will likely have a minimal effect if any," Pete said. Tesamorelin is an FDA-approved peptide for lipodystrophy or abnormal distribution of fat in the body. The weight lost by the 1mg group was slightly more than that achieved by the world’s largest selling prescription obesity medication in similar trials over the same period, without its troublesome side effects. The enzyme aromatase, found in the adipose tissue, converts testosterone to estrogen. It helps people with obesity lose body fat by stimulating the pituitary gland and speeding up the body’s metabolism for faster weight loss.