What Is 191-XT?
191-XT is a premium, all-natural source of orally bioavailable IGF-1 - one of the most anabolic peptide hormones in the human body. Not only does 191-XT increase your IGF-1 naturally, it also boosts other anabolic and fat-burning hormones in your body, including testosterone and growth hormone. And don’t worry, 191-XT doesn’t contain any synthetic, harsh compounds that shut down your endocrine system.

How Does 191-XT Work?
191-XT contains the only orally efficacious source of IGF-1, from deer antler velvet. Normally, your body would breakdown the peptide bonds of IGF-1 if you consumed it orally, but the IGF-1 in deer antler velvet is absorbed intact and rapidly increases plasma IGF-1. 191-XT also contains a blend of natural ingredients that increase your testosterone and growth hormone levels, thereby helping you burn more body fat and build more muscle.

What 191-XT Was Designed To Do For YOU!
191-XT gives you the ingredients that make your body a natural anabolic and fat-burning machine. You will pack on more lean body mass and shred more body fat (while retaining your hard-earned muscle tissue), as well as experience enhanced libido, erectile function, and sleep quality.

IGF-1… The Next-Level In Muscle Building Agents

Ever wonder why so many athletes and bodybuilders use human growth hormone (HGH) to take their performance and physique to the next level? Because HGH increases insulin-like growth factor-1 (IGF-1)!

191-XT contains the purest natural source of IGF-1 available, coming from the immature tissue surrounding viable deer antlers (which are rich with IGF-1). Still not sure why IGF-1 kicks ass for building lean size and cutting body fat? Read on...

“What is IGF-1 and why is it so important for muscle building and getting lean?”

IGF-1 is a peptide hormone structurally similar to insulin and has strong anabolic and anti-catabolic actions in the human body.

Research demonstrates that IGF-1 is a potent activator of the AKT signaling pathway in muscle cells, which promotes both growth and proliferation.3 Another highly beneficial aspect of IGF-1 is that it blunts skeletal muscle protein breakdown (i.e. it’s anti-catabolic and muscle-sparing).4

Usually, your body produces small amounts of IGF-1 when growth hormone reaches your liver. In fact, growth hormone in and of itself is not an anabolic hormone - it’s IGF-1 secreted from elevated growth hormone levels that makes your body anabolic.

This is why 191-XT blows HGH out of the water! Best of all, 191-XT is natural and non-suppressive, meaning you don’t need to cycle it, nor will you get flagged on a drug test.

Benefits of Supplementing with 191-XT

IGF-1 has both local and systemic actions throughout your body, promoting muscle growth and other anabolic processes. Similarly, growth hormone acts throughout your body to mobilize fat tissue so that it can be burned for energy. Testosterone is also one of the most anabolic hormones your body naturally produces and is a primary controller of anabolic and anti-catabolic processes in muscle tissue.

After using 191-XT for at least one month, you can expect:

  • Increased levels of anabolic, anti-catabolic, and fat-burning hormones
  • More muscle growth
  • Drastically increased strength, power, and stamina
  • Faster fat loss
  • Enhanced sex drive and feelings of “Alpha” drive
  • Better sleep and more energy throughout the day

The 191-XT Ingredient Profile: Naturally Increase Growth Hormone,
IGF-1, and Testosterone!

We all know how important testosterone is for men. If you’re testosterone levels are at rock bottom, you’re not going to be packing on much muscle, nor will you be able to cut off stubborn body fat...Not to mention your sex drive will be nonexistent.

In males, the synthesis of testosterone is controlled by highly intricate interplay between the hypothalamus, pituitary gland, liver, and testes (called the hypothalamic–pituitary–testes axis).

When serum levels of free testosterone drop significantly enough, the hypothalamus creates gonadotropin-releasing hormone (GnRH); GnRH signals the pituitary gland to secrete luteinizing hormone (LH); LH signals the testes to manufacture testosterone. Notice how these hormones ultimately act as a cascade.

Furthermore, IGF-1 and growth hormone secretion are likewise controlled by this exact same HPT axis. Your hypothalamus produces growth hormone-releasing hormone (GHRH), which then tells the pituitary gland to secrete GH in pulses. GH then influences your liver to synthesize IGF-1.

What makes 191-XT such a powerful supplement is that it contains ingredients that act on your HPT axis to increase testosterone, growth hormone, and IGF-1, as well as provide your body with pure IGF-1 from Deer Antler Velvet extract.

Research behind the 191-XT Formula

Along with Deer Antler Velvet extract, 191-XT is loaded with a potent blend of anabolic hormone optimizers to help you build lean mass and shed body fat fast! Here’s the science behind these ingredients:

L-Arginine HCl

L-Arginine HCl is a highly bioavailable, acidic form of L-arginine. Research demonstrates that L-arginine acts on the hypothalamus to promote the secretion of GnRH (gonadotropin-releasing hormone) and GHRH (growth hormone-releasing hormone), which then act downstream to increase testosterone, GH, and IGF-1.1

Epimedium (Epimedium Sagittatum)

Epimedium sagittatum, known commonly as horny goat weed, has been used for ages in Ayurvedic medicine as a natural treatment for weak erections and erectile dysfunction. Horny goat weed contains a high amount of icariin - a flavonoid that has been shown to block the actions of PDE type-5 enzymes, thereby enhancing blood flow to the penis and promoting stronger erections.2

Tribulus (Tribulus Terrestris)

Tribulus terrestris has been used in Ayurvedic medicine for many years as a natural testosterone booster and aphrodisiac. Tribulus is an annual herb and member of the Zygophyllaceae family found throughout many tropical and temperate regions of the world, including east Asia, South America, and parts of Europe.

Tribulus contains a specific steroidal saponin known as protodioscin that appears to support natural testosterone levels by elevating serum luteinizing hormone (LH).3

Longjack (Eurycoma Longifolia)

Eurycoma longifolia, also known as Tongkat Ali or longjack, is one of the most potent herbal supplement for increasing low testosterone levels. It works by boosting luteinizing hormone (LH) and follicle-stimulating hormone (FsH) production, two key hormones that stimulate your body to produce more testosterone. In fact, studies suggest that longjack can elevate natural testosterone levels by upwards of 200% in just six weeks!4 Longjack has natural aromatase inhibiting actions, thereby controlling estrogen production.

Get Results Guaranteed! Try 191-XT Now!


1. Merimee, T. J., Rabinowitz, D., & Fineberg, S. E. (1969). Arginine-initiated release of human growth hormone: factors modifying the response in normal man. New England Journal of Medicine, 280(26), 1434-1438.

2. Shindel, A. W., Xin, Z. C., Lin, G., Fandel, T. M., Huang, Y. C., Banie, L., ... & Lue, T. F. (2010). Erectogenic and neurotrophic effects of icariin, a purified extract of horny goat weed (Epimedium spp.) in vitro and in vivo. The journal of sexual medicine, 7(4pt1), 1518-1528.

3.  Qureshi, A., Naughton, D. P., & Petroczi, A. (2014). A systematic review on the herbal extract Tribulus terrestris and the roots of its putative aphrodisiac and performance enhancing effect. Journal of dietary supplements, 11(1), 64-79.

4. Tambi, M. I. B. M., Imran, M. K., & Henkel, R. R. (2012). Standardised water‐soluble extract of Eurycoma longifolia, Tongkat ali, as testosterone booster for managing men with late‐onset hypogonadism?. Andrologia, 44, 226-230.