Side-by-Side Comparison · 2026

Beta-Defensin-1 vs Theta-Defensin

Beta-Defensin-1 vs Theta-Defensin — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

Beta-Defensin-1
Antimicrobial Peptide

Human beta-defensin-1 (HBD-1) is a constitutively expressed antimicrobial peptide produced by epithelial cells of the skin, respiratory tract, and genitourinary system. Unlike inducible defensins, HBD-1 is present at steady-state levels as a component of basal innate immune defen...

Calculate Beta-Defensin-1 dose →
Theta-Defensin
Antimicrobial Peptide

Theta-defensins are the only known cyclic peptides produced in the animal kingdom. Found in rhesus macaques and other Old World primates, they are formed by ligation of two 9-residue alpha-defensin gene products into an 18-residue macrocyclic structure....

Calculate Theta-Defensin dose →
Key Parameters
Parameter Beta-Defensin-1 Theta-Defensin
Category Antimicrobial Peptide Antimicrobial Peptide
Research Preclinical Preclinical
Half-Life Hours Extended (cyclic stability)
Typical Dose N/A (endogenous) N/A (research only)
Frequency Constitutive N/A
Route Endogenous Systemic (research)
FDA Status Not approved Not approved

Calculate doses for both

Use ASCEND's free reconstitution calculator to get exact syringe draw amounts for your vial.

Calculate Beta-Defensin-1 Calculate Theta-Defensin
Frequently Asked Questions
What is the difference between Beta-Defensin-1 and Theta-Defensin?
Beta-Defensin-1: Human beta-defensin-1 (HBD-1) is a constitutively expressed antimicrobial peptide produced by epithelial cells of the skin, respiratory tract, and genitourinary system. Unlike inducible defensins, HBD... Theta-Defensin: Theta-defensins are the only known cyclic peptides produced in the animal kingdom. Found in rhesus macaques and other Old World primates, they are formed by ligation of two 9-residue alpha-defensin ge...
Which has a longer half-life, Beta-Defensin-1 or Theta-Defensin?
Beta-Defensin-1 half-life: Hours. Theta-Defensin half-life: Extended (cyclic stability).
Can you stack Beta-Defensin-1 and Theta-Defensin?
Beta-Defensin-1 and Theta-Defensin are in the same category and used together in research protocols. Always consult relevant literature and follow appropriate guidelines.

For research use only. Not medical advice. ASCEND does not conduct or endorse any specific research protocol. Always consult relevant scientific literature and regulatory guidelines.