Garlic oil macerate: reading small numbers correctly
A garlic oil macerate listed as 500 mcg is 0.5 mg, so the unit, not the dose, explains most of the gap between two labels. Divide any mcg figure by 1,000 and you have milligrams. That one line settles more label arguments than any review.
I keep a pen next to the laptop for this. Not because the math is hard. Because it's easy to skip when the number on the front label is four digits and the one in the supplement facts is a decimal.
Shops don't help. Product photography puts the largest printable figure on the label face, and the smallest one in the panel you have to scroll to, so the first number you see is the one most likely to be in micrograms.
Why a garlic oil macerate ends up in micrograms
Oil macerates are dilute by design. You steep crushed garlic in a carrier oil for weeks, then jar the oil, and the amount of active sulphur compound that survives per millilitre is small. A single softgel might hold 300 mg of oil and a few hundred micrograms of the compounds that matter. Liquid extracts labelled by drop land in the same range, which is why the numbers read in mcg more often than mg.
Dry powders go the other way. 500 mg of garlic powder is a weight of the whole food, not a weight of allicin, and the two figures describe different things. That distinction is where the mg vs mcg confusion really bites.
Reading both columns before you add anything to the cart
Start with the serving size. A 60 softgel pack at two per serving is 30 servings, and the bottle lasts a month. Then convert. Then ask what the figure describes.
Here is a worked example from a label I read last winter. Front panel said 1,000 mcg. Supplement facts said 1 mg per softgel, two softgels per serving. Both correct. Two softgels give 2 mg of the concentrate and the bottle cost 24 euros for 60 softgels, so the cost was 0.80 euros a day. A rival label printed 5 mg in large type on the front and turned out to mean 0.5 mg of the concentrate plus 4.5 mg of carrier oil. Same category, four times the price per active milligram.
Where conversion stops helping
Unit math tells you what is inside the softgel. It says nothing about how much your body keeps. Absorption from an oil base depends on taking it with a meal that contains some fat, and on your own digestion, and on how long the stock sat in a warehouse. I've had two batches of the same product feel different to me, which is not evidence of anything except that oils are variable.
Whole food sources have the same limitation from the other direction. Two cloves of garlic from my kitchen and two from a supermarket in February are not the same dose, and nobody prints a number on either.
What I do now
I write the converted milligram figure on the lid with a marker. It sounds fussy. It takes ten seconds and it means I never redo the arithmetic in a shop aisle while someone waits behind me.
The other habit is comparing cost per milligram rather than cost per container, since a 120 count jar at twice the price can still be the cheaper option. You only find that out after the division.
A third habit, slower to build: I stopped trusting any figure without a unit attached, including the ones in reviews. Three of the reviews I read for that first purchase confidently compared 1,000 mcg to 1,000 mg and concluded one product was a thousand times stronger. Whoever wrote it meant well. The arithmetic was simply absent, and it was repeated in the replies.
Small numbers deserve the same care as large ones.
Frequently asked questions
What is the difference between mg and mcg?Show answerHide answer
A microgram is a thousandth of a milligram, so the number looks much larger.
Why do some labels use IU?Show answerHide answer
Older units like IU describe biological activity rather than weight.
How do I compare across units?Show answerHide answer
Convert to the same unit first, then compare per serving.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
