Garlic
Garlic supplements in capsules, softgels and tablets, from odourless garlic oil to aged garlic extract. We explain how the forms differ, what allicin and SAC mean on a label, and how to take garlic daily.Read more →
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Odourless garlic, allicin and aged garlic extract explained
What is actually inside a garlic supplement
Garlic is the bulb of Allium sativum. An intact clove contains alliin, a stable sulphur compound. Crush or cut the clove and an enzyme called alliinase turns alliin into allicin. Allicin gives fresh garlic its smell and its bite, and it breaks down quickly. That single piece of chemistry explains why two garlic products can look almost the same on the shelf and be very different inside.
Labels make this harder than it needs to be. One pack states a fresh garlic equivalent of 5,000mg, another gives an allicin yield in micrograms, a third names S-allyl cysteine, usually shortened to SAC. The standardised compound is the useful number, not the equivalent. An equivalent only tells you how much raw garlic the extract started from. It says nothing about what survived drying, heating or extraction. Across herbal supplements, garlic is one of the clearest examples of that gap.
The main forms are not interchangeable
- Odourless garlic oil softgels. Garlic distilled or steeped in oil. Mild and easy to take, containing the oil-soluble compounds that allicin turns into.
- Enteric coated garlic powder tablets. The coating survives stomach acid, so allicin can still form further down. Here a stated allicin yield means something.
- Aged garlic extract. Garlic aged for many months. It contains no allicin and is standardised to SAC instead, which is water soluble and stable.
- Black garlic. Slowly heated garlic, mild in taste, also measured by SAC rather than allicin.
Because the compounds differ, findings on one form do not automatically apply to another. That is why we name the form and the standardisation on every product page, next to related bulbs and roots such as ginger root.
How we choose the garlic we stock
We look at three things before a garlic product goes live: the form, what it is standardised to, and the daily dose. We prefer labels that state an allicin yield or a SAC content, because a fresh garlic equivalent on its own tells you very little. Very high equivalent numbers without standardisation do not impress us. We buy directly from the brands, so you get what the label says, and our compliance team checks every product before it goes online. We test products ourselves and independent labs spot-check batches. You can read how we select our brands.
Who it suits and what to expect
Most people take garlic in capsule form as a steady daily habit alongside cooking with fresh cloves. A supplement is a convenient, measured amount, not a replacement for garlic in food. If odour or aftertaste has put you off before, an enteric coated tablet or an aged extract is the practical answer, since both keep the reactive compounds away from your mouth and stomach.
Take garlic with a meal to reduce the chance of reflux or a warm stomach, and give it two to three weeks of consistent daily use before you judge it. Softgels often use bovine gelatine, so check the shell if you eat plant based. Be honest with yourself about the evidence too: the European food safety authority has approved no health claim for garlic, so we describe compounds, forms and doses rather than promise outcomes. If you take anticoagulant medicine, or have surgery or dental work planned, speak to your GP or pharmacist first.
Frequently asked questions
A garlic supplement is a measured amount of Allium sativum, the same bulb you cook with, processed into a capsule, softgel or tablet. Depending on the method, it may contain garlic powder, a concentrated extract, garlic oil or aged garlic extract. People choose it for convenience and consistency: one capsule gives the same amount every day, without peeling cloves and without the smell that fresh garlic leaves behind.
