<https://upfitness.com/product/male-fertility-essentials/#product>
<http://schema.org/description>
"Zinc has been shown to increase levels of the luteinising hormone, the natural hormone in men that tells your body to make its own testosterone.  Vitamin D3, among many other positive effects, can also increase testosterone levels in men naturally.  Men who have taken NT Support before bed and D3 Replenish in the morning reported a feeling of better energy, including higher sex drive."
<https://upfitness.com/product/male-fertility-essentials/>