Lactoferricin vs VIP (Vasoactive Intestinal Peptide)
A detailed comparison to help you understand the differences and choose the right peptide for your research goals.
Lactoferricin
Lactoferricin is an antimicrobial peptide derived from lactoferrin, a protein found in milk and other secretions. It has potent antibacterial, antiviral, and antifungal properties.
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 | Lactoferricin | VIP (Vasoactive Intestinal Peptide) |
|---|---|---|
| Dose Range | 100 mcg–500 mcg | 100 mcg–200 mcg |
| Frequency | 1x daily | 1x daily |
| Cycle Length | 2–4 weeks | 2–8 weeks |
| Route | subcutaneous | intranasal |
| Mechanism | Binds to and disrupts microbial membranes through electrostatic interactions. Also binds to lipopolysaccharide (LPS) to neutralize endotoxins and has immunomodulatory effects. | 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 | Research applications vary widely. Oral lactoferrin supplements (containing lactoferricin precursor) typically dosed at 100-400mg daily. | Intranasal: 50-200mcg 1-3 times daily for chronic inflammatory conditions. Some protocols use subcutaneous administration. Dosing varies by condition. |
| Administration | Available through lactoferrin supplementation orally. Purified lactoferricin primarily used in research settings. | Intranasal is most common for inflammatory conditions. Subcutaneous injection also used. Must be stored cold and protected from light. |
| Side Effects | Lactoferrin supplementation is generally well-tolerated. May cause GI upset in some individuals. Derived from milk so caution with dairy allergies. | May cause nasal irritation, flushing, headache, or temporary diarrhea. Generally well-tolerated at standard doses. |
| Best For |
What They Have in Common
Lactoferricin, VIP (Vasoactive Intestinal Peptide) are both commonly used for:
Key Differences
Unique to VIP (Vasoactive Intestinal Peptide):
Which Has Stronger Evidence?
- Immune Support: Lactoferricin has stronger research support.
| Goal | Lactoferricin | VIP (Vasoactive Intestinal Peptide) |
|---|---|---|
| Immune Support | high | medium |
| Gut Health | medium | medium |
Key Studies
Lactoferricin
- Lactoferricin enables adenovirus infection of human skeletal muscle cells.
Npj viruses, 2025
- Lactoferricin, an antimicrobial motif derived from lactoferrin with food preservation potential.
Critical reviews in food science and nutrition, 2024
- Expression and antimicrobial activity of the recombinant bovine lactoferricin in Pichia pastoris.
Synthetic and systems biotechnology, 2024
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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