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IGF-1 is a naturally occurring anabolic hormone, and growth hormone (HGH) also acts through IGF-1. The two commonly used hormones associated with IGF-1 are IGF-1 LR3 and des(1-3)IGF-1, and to understand the relationship between these three, we also need to understand another hormone associated with IGF-1, IGFBP. IGF-1 IGF-1, short for insulin-like growth factor 1, also known as growth regulator …

Triiodothyronine T3 is not an anabolic steroid, but it plays a similar role to anabolic steroids to some extent. Although it is a drug used to treat hypothyroidism, but as a hormone (thyroid hormone),  use T3 for bodybuilding, there will be corresponding side effects. Thyroid axis inhibition The first is the inhibition similar to that of anabolic steroids. Exogenous T3 …

With the increase of age, natural testosterone levels will gradually decline, and will have a certain impact on the body, supplementing exogenous testosterone will promote the health of the body. However, testosterone is available by prescription. Can I get a prescription for testosterone? Whether you can get a it, you first need to measure whether your testosterone level is lower …

Dehydroepiandrosterone (DHEA) is a hormone that occurs naturally in the body and is produced primarily by the adrenal glands. It is a precursor to several other hormones, including testosterone. The conversion of DHEA to testosterone is a key process that affects various physiological functions in both men and women. Many people think that using DHEA can replace the effects of …

There are three FDA-approved testosterone injection formulations for use: TC (Test Cypionate),TE (Test Enanthate), and TU (Test undecanoate). They are both testosterone and have different half-lives because they attach to ester chains of different lengths. TU has the longest ester chain, consisting of 11 carbon atoms, so it has the longest half-life and lasts longer after injection. TC and TE …

If we don’t know exactly what testosterone does, we can easily name a few, including muscle growth aand fat reduction. If you ask how testosterone works, most people probably don’t know. Today, we will take a brief look at it. What’s the use of that, you might say? Who knows, maybe one day you’ll need it, maybe someone just needs …

When bodybuilders use Triiodothyronine T3, it is usually used during the cutting phase, which increases the basal metabolism, reduces fat and prevents muscle loss. Previously, T3 increased the basal metabolism and reduced fat, and today we will focus on how it can prevent muscle loss. In the cutting stage, it is mainly necessary to lose the fat stored during weight …

Natural testosterone refers to the testosterone naturally secrete by the body, which mainly produce by the testicles and regulate by positive and negative feedback of HPTA. Exogenous testosterone refers to testosterone introduced into the body from the outside, including testosterone replacement therapy (TRT) or anabolic steroids (AAS). Exogenous testosterone plays a role similar to natural testosterone, but it does not …

Since its discovery and in-depth study by biologists, testosterone has provided many new directions for human health and disease treatment. When use testosterone for medical purposes, it usually comes in the form of exogenous testosterone, which use to supplement or replace the body’s naturally  testosterone and has an irreplaceable role. There are various forms of medical testosterone available, and This …

In the human body, the thyroid hormones T3 and T4 exist simultaneously, one acting quickly and the other providing a slow and long-lasting effect. Rather than using one of them alone, the ideal idea for many BodyBuilders is to use them together. If use T3 and T4 together, how should we allocate the dose ratio of them? We can start …

When understanding the half-life of a testosterone derivative, we will propose that its half-life is relate to the length of the ester , and the longer the length of the ester chain, the longer the half-life of the corresponding compound. The half-life of testosterone is very short, only a few hours, and the testosterone after the addition of ester has …

Testosterone is a naturally occurring male sex hormone in the human body. It produce mainly in the testicles of men and in small amounts in the ovaries and adrenal glands of women. Testosterone is a steroid compound with a typical sterane core structure consisting of three carbon five-membered rings and one carbon four-membered ring. It has the formula C19H28O2 and …