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Head-to-head evidence comparison — which supplement is right for you?
Aged Garlic Extract wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Likely helps
14 of 15 studies with measurable effects showed benefit.
Top outcomes
Verdict
Mostly mechanism / observational
Top outcomes
Shared outcomes (1)
Outcomes where both Aged Garlic Extract and Glutathione have evidence — compare verdict strength side-by-side.
600-1200mg aged garlic extract
With meals, Split into 2 doses
Kyolic Aged Garlic Extract (most studied)
250-1000mg/day oral reduced L-glutathione (skin-lightening trials often used ~500mg); liposomal/sublingual forms aim to improve absorption
between-meals
Liposomal or sublingual glutathione (for absorption)
8-12 weeks
12+ weeks
4-8 weeks
4-12 weeks
8-12 weeks
Throughout use
Effects of aged garlic extract on blood pressure in hypertensive patients: A systematic review and meta-analysis of randomized controlled trials
Prostaglandins & other lipid mediators (2024) · Meta analysis · n=584
AGE tea supplementation reduces systolic blood pressure (SBP) (WMD: -4.03; %95CI: -6.87, -1.20; I2: 57.1 %) and diastolic blood pressure (DBP) (WMD: -1.44; 95 % CI= -2.87, -0.02; P = 0.052; I2: 36.8 %; P: 0.105).
Effect of garlic extract on markers of lipid metabolism and inflammation in coronary artery disease (CAD) patients: A systematic review and meta-analysis
Phytotherapy research : PTR (2023) · Meta analysis
The standardized mean difference with 95% CI was calculated using fixed-effect or random-effect models.
A meta-analysis of randomized, double-blind, placebo-controlled trials for the effects of garlic on serum lipid profiles
Journal of the science of food and agriculture (2012) · Meta analysis · n=26
Compared with the placebo groups, serum TC and TG levels in the garlic group were reduced by 0.28 (95% CI, -0.45, -0.11) mmol L⁻¹ (P = 0.001) and 0.13 (95% CI, -0.20, -0.06) mmol L⁻¹ (P < 0.001), respectively.
Randomized controlled trial of oral glutathione supplementation on body stores of glutathione.
European journal of nutrition (2015) · Rct · n=54
Increased glutathione in some body compartments over 6 months
Glutathione as a skin-lightening agent and in melasma: a systematic review.
International journal of dermatology (2025) · Systematic review
Skin-lightening and melasma improvement reported
The clinical effect of glutathione on skin color and other related skin conditions: A systematic review.
Journal of cosmetic dermatology (2019) · Systematic review
Reduced melanin/skin darkening in trials
Meta-analysis shows modest SBP reduction of ~4 mmHg and DBP reduction of ~1.4 mmHg. Effect size is relatively small compared to pharmaceutical interventions. Studies primarily used aged garlic extract forms.
AI-estimated from published studies. Interpret as directional guidance.
Aged Garlic Extract has a higher evidence score (9/10 vs 5.2/10) and wins in 2 of 3 categories.
For reduce inflammation, Aged Garlic Extract has a higher relevance score (90 vs 45).
No known interactions between Aged Garlic Extract and Glutathione have been documented in our database. However, always consult a healthcare provider before combining supplements.