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The library

149 compounds. Every one graded.

Filter by research area or by how strong the evidence actually is. Profiles graded Animal or Anecdotal are not hidden they are labelled, which is more useful.

Clinical
15
Human-limited
61
Animal
54
Anecdotal
19

25 of 149 profiles

Muscle & Growth

Gonadorelin Acetate

Clinical

Preserve natural testosterone via HPG axis activation

Gonadorelin Acetate is a synthetic decapeptide identical to endogenous gonadotropin-releasing hormone (GnRH), produced and secreted by the hypothalamus. It stimulates the pituitary gland to release luteinizing hormone (LH) and follicle-stimulating hormone (FSH), thereby supporting endogenous testosterone and estrogen production. It is used clinically to assess pituitary function, treat hypogonadism, support fertility, and is increasingly used alongside anabolic protocols to preserve testicular function.

0 RCT · 0 human · 0 preclinical

sexual

Human Chorionic Gonadotropin (HCG)

Clinical

The LH Mimic for Hormonal Restoration

Human Chorionic Gonadotropin (HCG) is a glycoprotein hormone naturally produced by the placenta during pregnancy, structurally similar to luteinizing hormone (LH). In clinical and research settings, it is used to stimulate testosterone production in men, support fertility, and maintain testicular function during or after anabolic steroid use. It acts directly on the gonads to mimic LH signaling, making it a cornerstone of hormonal restoration protocols.

0 RCT · 0 human · 0 preclinical

sexual

Human Growth Hormone (HGH)

Clinical

The master anabolic and lipolytic growth hormone

Human Growth Hormone (HGH) is a 191-amino acid peptide hormone naturally secreted by the anterior pituitary gland that regulates growth, body composition, and metabolism. In clinical and performance contexts, recombinant HGH (rhGH) is administered exogenously to mimic or augment endogenous GH signaling. It is one of the most studied anabolic and lipolytic compounds in endocrinology, with established uses in GH deficiency, muscle-wasting conditions, and anti-aging protocols.

0 RCT · 0 human · 0 preclinical

growth

Human Menopausal Gonadotropin (HMG)

Clinical

Dual gonadotropin for fertility and testicular function

Human Menopausal Gonadotropin (HMG) is a purified preparation of gonadotropins extracted from the urine of postmenopausal women, containing both Follicle-Stimulating Hormone (FSH) and Luteinizing Hormone (LH) activity in approximately equal ratios. In clinical medicine it is used to stimulate ovulation in women and spermatogenesis in men, particularly those with hypogonadotropic hypogonadism. In performance and fertility contexts, HMG is used alongside or after hCG to restore or maintain testicular function, intratesticular testosterone production, and sperm output.

0 RCT · 0 human · 0 preclinical

sexual

Triptorelin Acetate

Clinical

GnRH analogue for hormonal axis modulation

Triptorelin Acetate is a synthetic decapeptide analogue of gonadotropin-releasing hormone (GnRH) used clinically to treat hormone-sensitive conditions such as prostate cancer, endometriosis, and central precocious puberty. Upon initial administration it causes a transient surge in luteinizing hormone (LH) and follicle-stimulating hormone (FSH), followed by sustained suppression of gonadal steroid production through pituitary receptor desensitization. In research and off-label contexts, single low-dose administration has been explored as a means to transiently restore hypothalamic-pituitary-gonadal (HPG) axis function in individuals with post-anabolic-steroid-induced hypogonadism.

0 RCT · 0 human · 0 preclinical

sexual

CJC-1295

Human-limited

Long-acting GHRH analog for GH elevation

A long-acting GHRH analog that extends the half-life of endogenous growth hormone releasing hormone, producing sustained elevation of GH and IGF-1.

0 RCT · 0 human · 0 preclinical

growth

CJC-1295 (No DAC) + Ipamorelin 5mg Blend

Human-limited

Synergistic GH pulse amplifier for body and recovery

CJC-1295 (without DAC) + Ipamorelin is a synergistic peptide blend combining a growth hormone-releasing hormone (GHRH) analogue with a selective growth hormone secretagogue. Together, they stimulate the pituitary gland to release growth hormone in a pulsatile, physiologically natural manner. This combination is widely used for body composition improvement, recovery, anti-aging, and sleep quality enhancement.

0 RCT · 0 human · 0 preclinical

growth

CJC-1295 (Without DAC)

Human-limited

Natural GH Pulses for Growth and Recovery

CJC-1295 without DAC (also known as Modified GRF 1-29) is a synthetic analog of growth hormone-releasing hormone (GHRH) that stimulates the pituitary gland to release growth hormone in a pulsatile, physiologically natural pattern. It consists of the first 29 amino acids of GHRH with four key amino acid substitutions that enhance stability and receptor affinity compared to the native peptide. It is widely used in research settings for its potential to promote lean muscle growth, fat loss, recovery, and anti-aging effects.

0 RCT · 0 human · 0 preclinical

growth

CJC-1295 with DAC

Human-limited

Long-acting GHRH analog for sustained GH release

CJC-1295 with DAC is a synthetic, long-acting analog of growth hormone-releasing hormone (GHRH) that incorporates a Drug Affinity Complex (DAC) to dramatically extend its half-life. By binding covalently to serum albumin, it maintains sustained elevation of growth hormone (GH) and insulin-like growth factor 1 (IGF-1) for up to two weeks per injection. It is used in research settings to study GH secretion, body composition changes, and recovery processes.

0 RCT · 0 human · 0 preclinical

growth

GHRP-2

Human-limited

Potent GH secretagogue for muscle and recovery

Growth hormone releasing peptide-2 for lean mass & recovery.

0 RCT · 0 human · 0 preclinical

growth

Hexarelin

Human-limited

Potent growth hormone releasing peptide

Potent GH secretagogue with cardioprotective effects.

0 RCT · 0 human · 0 preclinical

growth

Hexarelin Acetate

Human-limited

Potent GH secretagogue with cardiac benefits

Hexarelin Acetate is a synthetic hexapeptide and potent growth hormone secretagogue (GHS) that stimulates pituitary release of growth hormone (GH) by mimicking the action of ghrelin. It binds to the GHS-R1a receptor with high affinity and also exhibits direct cardioprotective effects independent of GH release. Developed originally as a potential treatment for GH deficiency, it is one of the most potent GH-releasing peptides studied in clinical research.

0 RCT · 0 human · 0 preclinical

growth

HGH Fragment 176-191

Human-limited

Targeted fat-loss fragment of growth hormone

HGH Fragment 176-191 is a synthetic peptide derived from amino acids 176–191 of the C-terminus of human growth hormone (hGH). It was specifically engineered to retain the lipolytic (fat-burning) properties of hGH while eliminating its growth-promoting and insulin-desensitizing effects. Research, primarily in animal models, suggests it stimulates fat breakdown and inhibits the formation of new fat cells.

0 RCT · 0 human · 0 preclinical

fat-loss

Ipamorelin

Human-limited

GH-releasing peptide for lean mass and recovery

A selective growth hormone secretagogue and ghrelin mimetic that stimulates pituitary GH release with high specificity and minimal effect on cortisol or prolactin.

0 RCT · 0 human · 0 preclinical

growth

Ornithine Alpha-Ketoglutarate (OKG)

Human-limited

Dipeptide for nitrogen retention and muscle recovery

Dipeptide precursor for muscle protein synthesis.

0 RCT · 0 human · 0 preclinical

growth

FST 344

Animal

Myostatin blocker for serious muscle hypertrophy

FST 344 is a recombinant isoform of follistatin, a naturally occurring glycoprotein that binds and neutralizes myostatin and activin, two potent inhibitors of muscle growth. By suppressing these negative regulators, FST 344 promotes skeletal muscle hypertrophy, enhances recovery, and may support bone density. It has been investigated in gene therapy and preclinical contexts for muscular dystrophy and sarcopenia, though human clinical data remain very limited.

0 RCT · 0 human · 0 preclinical

growth

GDF-8 (Myostatin)

Animal

The Master Brake on Muscle Growth

GDF-8, also known as myostatin, is a TGF-β superfamily member that acts as a potent negative regulator of skeletal muscle mass. It limits muscle fiber size and number by inhibiting myoblast proliferation and differentiation. Research into myostatin inhibition has generated significant interest for applications in muscle wasting diseases, metabolic disorders, and athletic performance.

0 RCT · 0 human · 0 preclinical

growth

GHRP-3

Animal

Third-generation GH secretagogue with refined selectivity

GHRP-3 is a synthetic hexapeptide and member of the growth hormone releasing peptide family, designed to stimulate the pulsatile release of growth hormone (GH) from the anterior pituitary gland. It acts primarily as a ghrelin mimetic and GHS-R1a agonist, amplifying natural GH secretion pulses. GHRP-3 is structurally related to GHRP-2 and GHRP-6 but exhibits a modified amino acid sequence intended to reduce appetite-stimulating side effects while maintaining GH secretagogue potency.

0 RCT · 0 human · 0 preclinical

growth

GHRP-6

Animal

GH-releasing peptide with orexigenic effects

Growth hormone releasing peptide with appetite stimulation.

0 RCT · 0 human · 0 preclinical

growth

IGF-1 LR3

Animal

Long-R3 insulin-like growth factor for muscle differentiation

Long-acting IGF-1 analog for muscle growth & differentiation.

0 RCT · 0 human · 0 preclinical

growth

Mechano Growth Factor (MGF)

Animal

Local muscle repair signal for accelerated recovery

Mechano Growth Factor (MGF) is a splice variant of Insulin-like Growth Factor 1 (IGF-1) that is produced locally in muscle and other tissues in response to mechanical stress or damage. It plays a critical role in activating satellite cells (muscle stem cells) to initiate repair and hypertrophy. MGF is primarily of interest to researchers studying muscle regeneration, athletic recovery, and tissue repair.

0 RCT · 0 human · 0 preclinical

growth

ACE-031

Anecdotal

ACVR2B-Fc myostatin/activin trap

ACVR2B-Fc fusion protein for myostatin & activin inhibition.

0 RCT · 0 human · 0 preclinical

growth

Follistatin-344

Anecdotal

Myostatin antagonist for muscle hyperplasia

Myostatin inhibitor for extreme muscle growth.

0 RCT · 0 human · 0 preclinical

growth

GHRP-4

Anecdotal

Pituitary GH secretagogue for growth and recovery

GHRP-4 is a synthetic hexapeptide ghrelin mimetic designed to stimulate the pituitary gland's release of endogenous growth hormone. It belongs to the same family as GHRP-2 and GHRP-6 but is a less extensively characterized analog with a modified structure aimed at optimizing GH release with a potentially reduced appetite-stimulating side effect profile. Research on GHRP-4 specifically is limited compared to its better-studied relatives, and most mechanistic understanding is extrapolated from the broader GHRP class.

0 RCT · 0 human · 0 preclinical

growth

PEG-MGF

Anecdotal

PEG-MGF for muscle hyperplasia and repair

PEGylated Mechano Growth Factor for muscle stem cell activation.

0 RCT · 0 human · 0 preclinical

growth

Reference information for research purposes. Not medical advice, and not a recommendation to use any compound. Many entries describe substances that are not approved for human use.