Three numbers on an aged garlic label decide what you're getting, and learning how to read aged garlic labels comes down to finding all 3: the extract ratio, the serving size multiplier, and the S-allyl cysteine content. Most bottles print them. Few explain them, and the third is usually the smallest type on the panel.
What aging does to garlic
Raw garlic is dominated by alliin, an odorless compound that turns into allicin when the clove is crushed. Allicin is unstable and disappears within hours. Aging chopped garlic in ethanol and water for 18 to 24 months converts alliin into S-allyl cysteine, or SAC, a stable, water-soluble thiosulfinate that survives digestion and shows up in blood.
That conversion is the whole point of the process. A fresh garlic powder and an aged garlic extract are not the same product at different prices, and the label should make the difference visible.
How to read the extract ratio first
You'll see something like "10:1" or "aged garlic extract 600 mg (from 6,000 mg fresh garlic)." The ratio tells you how much raw material went in. A 10:1 product at 600 mg used 6,000 mg of garlic. A 5:1 product at 600 mg used 3,000 mg.
That sounds like more is better. It isn't necessarily. A higher ratio can mean a longer, gentler extraction that preserves SAC, or it can mean more processing that destroys it. The ratio describes input, not output.
Does the serving size actually multiply to what you think?
This is the line people skip. A panel that reads "600 mg per serving" and "serving size: 2 gummies" means each gummy holds 300 mg. If the bottle holds 60 gummies, you have 30 servings, not 60.
Run that arithmetic before you compare prices. A $20 bottle of 60 gummies at 300 mg each is 18,000 mg total. A $24 bottle of 60 capsules at 600 mg each is 36,000 mg total, and the second is cheaper per milligram despite the higher sticker.
You'll also want to know how many days the bottle lasts at the label's suggested serving. That number is the honest basis for comparison, and it takes about fifteen seconds to work out.
Compound weight or elemental weight
Garlic is simpler than minerals on this point, because there's no elemental fraction to separate. The milligram figure describes the extract itself. What matters is the SAC figure inside it, usually printed as "S-allyl cysteine 1.2 mg" or "SAC 5,000 mcg."
Typical aged garlic extracts run about 0.2% to 0.5% SAC by weight. A 600 mg extract at 0.3% gives you roughly 1.8 mg of SAC. Two products can both say 600 mg and differ by a factor of two on the number that actually matters, and only the SAC line will tell you.
If a label gives no SAC figure at all, it is telling you something too. Either the extract is standardized on something else or it isn't standardized, and you can't tell which.
Our aged garlic extract gummies list the extract amount per serving on the panel, and comparing that line against the serving size is the fastest way to see how the format works.
The lines most readers miss
Check the "other ingredients" line for sugar alcohols. Gummies carry them, and 4 to 6 gummies can add up to enough sorbitol or maltitol to cause gas. That's not a safety problem, but it's a reason people stop taking a product after a week.
Check whether the extract is listed as "aged" or just "garlic extract." Aging is a specific 18 to 24 month process, and a product that skips the word is probably a standard extract with a different compound profile.
Check the storage instruction. SAC is stable, which is one of its advantages, but gummies still pick up moisture. A bottle kept in a bathroom cabinet will go soft before the date on the base.
Our daily essentials collection groups the products people most often stack, and the full product range shows how serving sizes are declared across formats. If you're comparing garlic against a TUDCA and milk thistle gummy or a liver support liquid drop, read the serving multiplier on all three before you read the price.
A thirty second check
Read the serving size. Divide the per serving figure by the number of units in a serving. Multiply by units per bottle to get total milligrams. Find the SAC figure and compare it across products. That's the whole method, and it works on every bottle in the category.
Garlic is one of the better-documented botanicals in the supplement aisle, with decades of research behind the aged form specifically. The label is where that research either reaches you or doesn't, and most of the time it comes down to whether you read the fourth line on the panel.
Label reading questions
What does the serving size actually multiply to?
It tells you the amount per unit. Two gummies at 600 mg per serving means each gummy holds 300 mg, and the bottle lasts half as long as you assumed.
Compound weight or elemental weight?
Neither, strictly. Garlic labels show extract weight, and the figure to compare is the SAC content, typically 0.2% to 0.5% of the extract.
Which line is the one people skip?
The serving size. Readers compare the per serving milligram figure and the price, and never divide by units per serving to get the real per unit amount.
Two bottles at the same price and the same headline number can differ by a factor of two in SAC. The label has everything you need to tell them apart, and none of it is in the largest font.