Garlic sauce: strong garlic trials, but a spoon of this is mostly oil

In a meta-analysis of 108 trials with 7137 adults, most of which tested garlic powders and extracts at fixed doses, garlic lowered total cholesterol by about 10 mg/dL and systolic blood pressure by about 3.7 mmHg. Neither confidence interval touches zero: 6.7 to 13.7 mg/dL for cholesterol, 2.4 to 5.1 mmHg for pressure. What those trials did not use is garlic sauce. We found no study of toum or aioli itself, and nobody has measured how much garlic a serving delivers. What we do know is the calories. The US survey food Garlic sauce has 683 calories per 3.5 oz (100 g), which works out to about 109 calories in a 16 g tablespoon, recalculated from the 100 g value for a sauce whose recipes vary widely. The one trial that fed people real raw garlic went the other way. In 192 adults with moderately high LDL, raw garlic equal to a 4 g clove, 6 days a week for 6 months, had no statistically or clinically significant effect on LDL cholesterol. It is a single trial set against the pooled supplement data.

As people eat it, per 3.5 oz (100 g)

How much is actually in it

• The US survey food Garlic sauce has 683 calories per 3.5 oz (100 g), so one 16 g tablespoon carries about 109 calories. — US survey food Garlic sauce, FNDDS code 81301000, fdc_id 2710169 Evidence E source
  683 calories per 3.5 oz (100 g); 109 calories per tablespoon (16 g); 191 calories per dipping-size container (28 g)
• The US survey food Garlic sauce has 473 mg sodium per 3.5 oz (100 g), about 76 mg in a 16 g tablespoon and 132 mg in a 28 g dipping cup. — US survey food Garlic sauce, FNDDS code 81301000, fdc_id 2710169 Evidence E source
  Sodium 473 mg per 3.5 oz (100 g); 75.7 mg per tablespoon; 132.4 mg per dipping-size container

What cooking and storage change

• In 13 volunteers, acid-minced raw garlic delivered about 66% of the allicin of crushed raw garlic, while boiled garlic gave 16% and roasted 30%. — 13 volunteers; allicin bioavailability measured by breath allyl methyl sulfide over 32 h (n = 13) Evidence B source
  Allicin bioequivalence vs homogenized raw garlic (100%): acid-minced 66%, roasted 30%, pickled 19%, boiled 16%, black garlic 5%

What it does to your health

• A meta-analysis of 108 trials with 7137 adults found garlic lowered total cholesterol by about 10 mg/dL and systolic blood pressure by about 3.7 mmHg. — Adults in randomized controlled trials of garlic intake, searched to June 2024 (n = 7137) Evidence A source
  Total cholesterol -10.21 mg/dL (95% CI -13.69 to -6.74); SBP -3.71 mmHg (-5.07 to -2.36)
• A meta-analysis of 27 trials with 1619 adults found garlic supplements lowered fasting glucose by about 2.8 mg/dL and HbA1c by 0.53 percentage points. — Adults in randomized controlled trials of garlic supplementation, searched to January 2026 (n = 1619) Evidence A source
  FBG -2.76 mg/dL (95% CI -5.11 to -0.41); HbA1c -0.53% (-0.86 to -0.20); insulin and HOMA-IR not significant

Safety, limits and interactions

• In a crossover RCT of 12 healthy men, 2 weeks of garlic did not change how a single 25 mg warfarin dose was handled or how it affected clotting. — 12 healthy male subjects of known CYP2C9 and VKORC1 genotype; 2 weeks garlic pretreatment then 25 mg warfarin (n = 12) Evidence B source
  No significant change in warfarin pharmacokinetics or INR with garlic (cranberry raised INR AUC by 30%)
• In a 2024 Canadian case of botulism that required intubation, viable C. botulinum type A was recovered from diced garlic kept in a repurposed coffee container. — One 74-year-old woman, Newfoundland and Labrador, 2024 (n = 1) Evidence C source
  Viable C. botulinum type A1(B5) recovered from both feces and the garlic; whole genome sequencing showed highly similar isolates

What people believe that the data does not support

• In an RCT of 192 adults with high LDL, eating raw garlic equal to a 4 g clove 6 days a week for 6 months did not lower LDL cholesterol. — 192 adults with LDL-C 130-190 mg/dL; raw garlic, powdered supplement, aged extract or placebo; 6 months (n = 192) Evidence B source
  6-month LDL-C change: raw garlic +0.4 mg/dL (SD 19.3) vs placebo -3.9 mg/dL (SD 16.5); no significant effect

Who this works differently for

• In the same 13-person study, enteric-coated garlic tablets delivered 36-104% of raw garlic allicin, falling to 22-57% when taken with a high-protein meal. — 13 volunteers; 13 garlic supplements compared with homogenized raw garlic (n = 13) Evidence B source
  Enteric tablets 36-104%, with high-protein meal 22-57%; non-enteric tablets 80-111%; enteric tablets disintegrated slower in women

What is still unknown

• A Cochrane review found only one eligible trial of garlic for colds, with 146 people, so evidence that garlic prevents or treats the common cold is insufficient. — Randomized trials of garlic vs placebo for the common cold, searched to August 2014 (n = 146) Evidence A source
  Single trial with a 180 mg allicin supplement: 24 vs 65 colds over 12 weeks; recovery time similar (4.63 vs 5.63 days)

The bottom line

The same survey food carries 473 mg sodium per 3.5 oz (100 g), about 76 mg in a tablespoon and 132 mg in a 28 g dipping cup, from one composite, and salt in home and restaurant toum varies. In 13 volunteers, acid-minced raw garlic delivered about 66% of the allicin of crushed raw garlic, measured by a breath marker, against 30% for roasted, 19% for pickled and 16% for boiled. A sauce made with lemon was not itself tested, so acid-minced garlic is the nearest stand-in. In the same study, enteric-coated garlic tablets delivered 36 to 104% of raw garlic allicin, falling to 22 to 57% when taken with a high-protein meal. Garlic supplements also nudge blood sugar. A meta-analysis of 27 trials with 1619 adults found fasting glucose 2.76 mg/dL lower (95% CI 0.41 to 5.11) and HbA1c 0.53 percentage points lower (0.20 to 0.86) in trials of supplements, and the authors call the improvement modest. For colds, a Cochrane review found only one eligible trial, with 146 people taking an allicin supplement, and judged the evidence insufficient to say garlic prevents or treats them. Two cautions have data behind them. In a crossover trial of 12 healthy young men, 2 weeks of a garlic supplement did not significantly change how a single 25 mg dose of warfarin was handled or how it affected clotting, which says nothing yet about patients on long-term warfarin. People on blood thinners have reason to raise garlic supplements with a doctor. The second is storage. In 2024 a 74-year-old woman in Newfoundland and Labrador needed intubation for botulism, and viable Clostridium botulinum type A was recovered from diced garlic she had kept in a repurposed coffee container. The garlic carried live bacteria even though no toxin was detected in it. A single case cannot show how common this is, and the abstract does not describe how the garlic was stored. Homemade garlic preparations kept in oil or sealed containers, which is what toum is, are the kind it concerns. Nothing on this page covers allergy to garlic or to the other ingredients of a sauce.

Sources

1. gsau-daily-r7-01 · dataset
   Garlic sauce, FNDDS code 81301000, fdc_id 2710169: Energy 683 KCAL per 100 g; 1 tablespoon 16 g; 1 dipping-size container 28 g; Quantity not specified 32 g
   USDA FoodData Central, FNDDS survey foods, release 2024-10-31 · checked 2026-09-30
2. gsau-daily-r7-02 · dataset
   Garlic sauce, FNDDS code 81301000, fdc_id 2710169: Sodium, Na 473 MG per 100 g; 1 tablespoon 16 g 75.7 MG; 1 dipping-size container 28 g 132.4 MG
   USDA FoodData Central, FNDDS survey foods, release 2024-10-31 · checked 2026-09-30
3. gsau-daily-r7-03 · bioavailability RCT
   Cooked or acidified garlic foods, which have no alliinase activity, gave higher ABB than expected: boiled (16%), roasted (30%), pickled (19%), and acid-minced (66%). Black garlic gave 5%.
   Nutrients, 2018 · checked 2026-09-30
4. gsau-daily-r7-05 · meta-analysis of RCTs
   Ultimately, 108 trials involving 7137 participants were incorporated into this meta-analysis. ... total cholesterol (WMD: -10.21, 95% CI: -13.69 to -6.74 mg/dL), ... systolic blood pressure (WMD: -3.71, 95% CI: -5.07 to -2.36 mmHg)
   Nutr Rev, 2026 · checked 2026-09-30
5. gsau-daily-r7-06 · meta-analysis of RCTs
   Twenty-seven RCTs (n = 1,619 participants) were included. Garlic supplementation significantly reduced FBG (WMD = -2.76 mg/dL; 95% CI: -5.11, -0.41) and HbA1c (WMD = -0.53%; 95% CI: -0.86, -0.20)
   Diabetes Res Clin Pract, 2026 · checked 2026-09-30
6. gsau-daily-r7-09 · RCT
   Co-administration of garlic did not significantly alter warfarin pharmacokinetics or pharmacodynamics.
   Br J Pharmacol, 2008 · checked 2026-09-30
7. gsau-daily-r7-10 · case report
   Food history investigation included some diced garlic in a repurposed coffee container that tested negative for botulinum neurotoxins by mouse bioassay, but viable C. botulinum type A was recovered from the sample.
   Can J Microbiol, 2026 · checked 2026-09-30
8. gsau-daily-r7-07 · RCT
   None of the forms of garlic used in this study, including raw garlic, when given at an approximate dose of a 4-g clove per day, 6 d/wk for 6 months, had statistically or clinically significant effects on LDL-C or other plasma lipid concentrations in adults with moderate hypercholesterolemia.
   Arch Intern Med, 2007 · checked 2026-09-30
9. gsau-daily-r7-04 · bioavailability RCT
   For enteric tablets, ABB varied from 36⁻104%, but it was reduced to 22⁻57% when consumed with a high-protein meal, due to slower gastric emptying. Independent of meal type, non-enteric tablets gave high ABB (80⁻111%), while garlic powder capsules gave 26⁻109%.
   Nutrients, 2018 · checked 2026-09-30
10. gsau-daily-r7-08 · Cochrane review
    There is insufficient clinical trial evidence regarding the effects of garlic in preventing or treating the common cold. A single trial suggested that garlic may prevent occurrences of the common cold but more studies are needed to validate this finding.
    Cochrane Database Syst Rev, 2014 · checked 2026-09-30