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SupplementScience

Types of Garlic: Forms & Bioavailability

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Forms Comparison

FormBioavailabilityBest For
Aged Garlic Extract (AGE/Kyolic)High (stable S-allyl cysteine)Daily immune support — odorless, standardized, best clinical evidence for immune modulation
Allicin-Standardized CapsulesModerate (allicin is unstable)Antimicrobial focus — enteric-coated capsules preserve allicin for intestinal release
Raw GarlicHigh (fresh allicin)Maximum allicin content — crush and let stand 10 minutes before consuming for peak allicin formation
Garlic Oil CapsulesLow-ModerateBudget option — but typically low in active compounds compared to AGE or allicin-standardized forms

Aged Garlic Extract (AGE/Kyolic)

Bioavailability: High (stable S-allyl cysteine). Best for: Daily immune support — odorless, standardized, best clinical evidence for immune modulation.

Allicin-Standardized Capsules

Bioavailability: Moderate (allicin is unstable). Best for: Antimicrobial focus — enteric-coated capsules preserve allicin for intestinal release.

Raw Garlic

Bioavailability: High (fresh allicin). Best for: Maximum allicin content — crush and let stand 10 minutes before consuming for peak allicin formation.

Garlic Oil Capsules

Bioavailability: Low-Moderate. Best for: Budget option — but typically low in active compounds compared to AGE or allicin-standardized forms.

Full Garlic Guide

References

  1. (). Preventing the common cold with a garlic supplement: a double-blind, placebo-controlled survey. Advances in Therapy. DOI
  2. (). Supplementation with aged garlic extract improves both NK and gamma-delta T cell function and reduces the severity of cold and flu symptoms. Clinical Nutrition. DOI