Human Growth Hormone (HGH) vs VIP (Vasoactive Intestinal Peptide)
A detailed comparison to help you understand the differences and choose the right peptide for your research goals.
Human Growth Hormone (HGH)
Human Growth Hormone (somatropin) is a 191-amino acid protein identical to naturally produced GH. FDA-approved for growth hormone deficiency, Turner syndrome, and other conditions. Widely used off-label for anti-aging and performance.
Full details →VIP (Vasoactive Intestinal Peptide)
VIP is a 28-amino acid neuropeptide with wide-ranging effects throughout the body. It acts as a neurotransmitter, neuromodulator, and immune regulator with particular importance in gut and lung function.
Full details →Side-by-Side Comparison
| Aspect | Human Growth Hormone (HGH) | VIP (Vasoactive Intestinal Peptide) |
|---|---|---|
| Dose Range | 200 mcg–2 mg | 100 mcg–200 mcg |
| Frequency | 1x daily | 1x daily |
| Cycle Length | 12–24 weeks | 2–8 weeks |
| Route | subcutaneous | intranasal |
| Mechanism | Binds to GH receptors throughout the body, stimulating IGF-1 production in the liver. Promotes protein synthesis, fat metabolism, and cellular regeneration across multiple tissues. | Binds to VPAC1 and VPAC2 receptors to modulate immune responses, regulate circadian rhythms, promote vasodilation, and support barrier function in gut and lungs. Has potent anti-inflammatory effects. |
| Typical Dosage | Medical: 0.1-0.3mg/kg/week divided into daily doses. Anti-aging: 1-2 IU daily. Performance: 2-6 IU daily, sometimes higher. | Intranasal: 50-200mcg 1-3 times daily for chronic inflammatory conditions. Some protocols use subcutaneous administration. Dosing varies by condition. |
| Administration | Subcutaneous injection, preferably at night to mimic natural pulsatile release. Rotate injection sites. Store refrigerated. | Intranasal is most common for inflammatory conditions. Subcutaneous injection also used. Must be stored cold and protected from light. |
| Side Effects | Joint pain, water retention, carpal tunnel syndrome, potential insulin resistance, and acromegaly features with long-term high doses. | May cause nasal irritation, flushing, headache, or temporary diarrhea. Generally well-tolerated at standard doses. |
| Best For |
What They Have in Common
Human Growth Hormone (HGH), VIP (Vasoactive Intestinal Peptide) are both commonly used for:
Key Differences
Unique to Human Growth Hormone (HGH):
Unique to VIP (Vasoactive Intestinal Peptide):
Which Has Stronger Evidence?
- Sleep Quality: Human Growth Hormone (HGH) has stronger research support.
| Goal | Human Growth Hormone (HGH) | VIP (Vasoactive Intestinal Peptide) |
|---|---|---|
| Sleep Quality | medium | low |
Key Studies
Human Growth Hormone (HGH)
- Transgenic Artifacts Caused by Passenger Human Growth Hormone.
Trends in endocrinology and metabolism: TEM, 2018
- [Human growth hormone and Turner syndrome].
Anales de pediatria (Barcelona, Spain : 2003), 2017
- Significance of the disulphide bonds of human growth hormone.
Endokrynologia Polska, 2013
VIP (Vasoactive Intestinal Peptide)
- Distribution of vasoactive intestinal peptide (VIP) immunoreactivity in the rat pallial and subpallial amygdala and colocalization with γ-aminobutyric acid (GABA).
Anatomical record (Hoboken, N.J. : 2007), 2024
- Increased Vasoactive Intestinal Peptide (VIP) in polycystic ovary syndrome patients undergoing IVF.
Frontiers in endocrinology, 2024
- Therapeutic Potential of Vasoactive Intestinal Peptide and its Derivative Stearyl-Norleucine-VIP in Inflammation-Induced Osteolysis.
Frontiers in pharmacology, 2021
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