Reading the label for allicin

Allicin on a supplement label is a potential figure, not an amount you actually swallow, and a typical 500 mg garlic tablet claims around 5,000 mcg of allicin potential per serving. That number describes what the alliin and alliinase enzyme pair could produce in a perfect reaction. Walking the panel line by line shows you which row carries the real information.

The front of the bottle is the last place I'd look.

Where the allicin line sits on the panel

Supplement Facts runs top to bottom in a fixed order: serving size, then the nutrient rows, then the other ingredients. A garlic product usually lists its extract weight first, say 500 mg, and the allicin yield below it as 5,000 mcg. Those two figures answer different questions. The first is what's in the capsule. The second is a calculated maximum, worked out from how much alliin the raw material carries and how completely the enzyme converts it.

What trips people up is the word potential. Once garlic is dried, the enzyme and its substrate sit side by side but don't react until water arrives, so the figure assumes a conversion that your gut only partly delivers. Some brands state allicin yield instead, which is marginally more honest about the same arithmetic.

There's a third version you'll run across, which is enteric-coated tablets designed to survive stomach acid and release their contents lower down. Those quote the same potential figure but make a stronger case for it, since the release point is chosen to favour the reaction. I don't buy the coating as proof, but it does explain why two 500 mg tablets with identical potential figures can behave differently in practice.

The conversions are worth memorising, because labels mix units freely. 5,000 mcg is 5 mg. A product that says 5 mg and another that says 5,000 mcg are the same claim written two ways, and neither one has told you how much of the finished tablet that represents.

How that compares with aged garlic extract

Aged garlic extract barely mentions this row at all, because 20 months of soaking converts those unstable sulphur compounds into water-soluble ones. Its label leads with extract weight, typically 600 mg, and standardises on a different marker entirely. Neither approach is wrong. They're describing two different preparations, and the panel row that matters changes accordingly.

If you're comparing two garlic products side by side, match the rows before you match the prices. One product quoting 5,000 mcg of potential and another quoting 1.2 mg of a stable compound aren't in the same units, and neither number tells you anything about the other.

Price per effective figure is the comparison that survives contact with a shop shelf. Divide the bottle price by the number of servings, then divide again by the standardised figure that actually matters to you. A $14 bottle of 60 servings at a genuinely standardised row can beat a $9 bottle of 30 servings at a vague one, and the arithmetic takes less time than reading the marketing copy.

The odourless products deserve their own warning. Odourless usually means the sulphur compounds have been aged or converted, which is a legitimate process, but some versions simply carry less of the active material and lean on the garlic name. The panel row tells you which is which in about 5 seconds.

The other ingredients worth a glance

Below the nutrient rows sits the other ingredients list, and it's part of what you swallow. Capsule material, flow agents like magnesium stearate, and any sweetener all show up there. I read that section once per product rather than at every purchase, since formulations rarely change, but a change in capsule material is the one thing that has made me switch brands before.

A vague panel is the other signal. If a label lists a garlic blend at 1,200 mg with no breakdown at all, there is no way to know how much of anything you're getting. Email the seller and ask for amounts. A partial disclosure is a partial claim, and I treat it that way.

Batch numbers and dates sit at the bottom of the panel, and they matter more for garlic than for most supplements, because the enzyme reactions that produce the active compounds drift over a long shelf life. A product two years past its date hasn't become dangerous, but the figures on its label describe a younger version of itself.

None of this makes label reading hard. It makes it specific. The habit that covers all of this takes about 30 seconds per bottle: check the serving size first, read the nutrient row that matches the preparation, and only then look at the front of the box, which is where the marketing lives and the least information does.