Testosterone is a steroid hormone from the androgen group and is found in humans and other vertebrates. In humans and other mammals, testosterone is secreted primarily by the testicles of males and, to a lesser extent, the ovaries of females. Small amounts are also secreted by the adrenal glands.It is the principal male sex hormone and an anabolic steroid.n average, in adult males, levels of testosterone are about 7â8 times as great as in adult females. As the metabolic consumption of testosterone in males is greater, the daily production is about 20 times greater in men. Females are also more sensitive to the hormone. Testosterone is observed in most vertebrates.
If the product was purchased from a Nerium International Brand Partner website, you must contact Nerium International by email at support@nerium.com or by phone at 855-463-7486 (855-4-NERIUM) to obtain a Return Preauthorization. Number (RPN). A Return Preauthorization Number is valid for ten (10) business days.
Phone Contact Numbers. In the digital age, phone numbers are quickly being replaced with online forms and email addresses. We were able to find a few important customer service phone numbers, but not as many as we expected from a huge publication like the New York Times. 1  Customer Service (Home Delivery): 1-800-698-4637.  Customer Service (International Herald): 1-212-556-7194.