Cathelicidin Dosage Guide: Research Protocols, Timing & Reconstitution

Standard Dosage Range

Research dosing range: Vitamin D dosage adjusted to achieve serum 25(OH)D levels of 40-60 ng/mL.

Educational reference only

These dosage ranges are derived from preclinical research and community protocols. No human clinical dose-ranging trials have established therapeutic doses for most research peptides. Always consult a qualified healthcare provider before starting any peptide protocol.

Dosage by Use Case

Immune Enhancement (general)

Variable, based on baseline 25(OH)D levelsDaily

Duration

Ongoing

Vitamin D3 supplementation guided by serum 25(OH)D monitoring. Aim for 40-60 ng/mL. May require 1,000 - 5,000 IU daily, or higher loading doses initially.

Infections (acute respiratory, skin)

Variable, based on baseline 25(OH)D levelsDaily

Duration

Until resolution of infection; then maintenance dose

Higher vitamin D3 doses may be used acutely under medical supervision, but monitoring for hypercalcemia is essential.

Autoimmune Conditions (adjuvant therapy)

Variable, based on baseline 25(OH)D levelsDaily

Duration

Ongoing

Vitamin D supplementation may modulate immune responses in autoimmune disorders. Requires careful monitoring and management by a healthcare provider.

Wound Healing (adjunct)

Variable, based on baseline 25(OH)D levelsDaily

Duration

Until wound closure

Adequate vitamin D levels may support wound healing processes. Topical LL-37 (active peptide derived from cathelicidin) is under investigation but not widely available.

Timing & Frequency

Vitamin D supplements are typically taken with a meal containing fat to enhance absorption. Consistent daily timing is recommended.

Cycle Guidance

Vitamin D supplementation is generally ongoing, rather than cycled, provided serum levels are maintained within the optimal range (40-60 ng/mL).

Reconstitution Reference

Quick reference for reconstituting Cathelicidin. For custom vial sizes and concentrations, use the Reconstitution Calculator.

Common Vial Size	N/A (Cathelicidin itself is not typically administered exogenously)
BAC Water Volume	N/A
Concentration & Draw	N/A
Storage	N/A
Stability	N/A

Use the Reconstitution Calculator → for precise injection volumes based on your exact vial size, water volume, and desired dose.

Frequently Asked Questions

How do I increase my cathelicidin levels?

The primary way to increase cathelicidin (specifically, the LL-37 peptide derived from it) is through vitamin D supplementation. Ensure adequate vitamin D intake or sun exposure and monitor serum 25(OH)D levels to maintain them in the optimal range (40-60 ng/mL).

What is the optimal vitamin D dose for immune support?

The optimal vitamin D dose varies depending on individual factors such as baseline 25(OH)D levels, skin pigmentation, and sun exposure. Start with 1,000 - 5,000 IU daily and adjust based on serum testing to achieve 25(OH)D levels of 40-60 ng/mL. Consult with a healthcare professional for personalized recommendations.

Can I take cathelicidin directly?

Direct exogenous administration of cathelicidin (hCAP-18 or LL-37) is not a common practice. Research focuses on stimulating endogenous production via vitamin D or investigating topical applications of LL-37 for wound healing and skin conditions.

What are the risks of high-dose vitamin D supplementation?

High-dose vitamin D supplementation can lead to hypercalcemia (elevated blood calcium levels), which can cause nausea, vomiting, weakness, and kidney problems. Regular monitoring of serum 25(OH)D and calcium levels is recommended, especially with doses exceeding 5,000 IU daily.