Coconut aminos vs soy sauce: sodium, gluten, and the best bottles

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Coconut aminos is sold as soy sauce without the downsides.

Less salt, no soy, no gluten, and a pleasant sweet-savory taste. If you've cut out soy or gluten, or you're watching your blood pressure, that sounds like the obvious swap. You've probably also noticed it costs more per ounce, and wondered whether "aminos" means anything at all.

Here's the honest structure of this article. First, what coconut aminos claims. Second, what science can and can't tell us, which is less than you'd hope. Third, how to choose between coconut aminos and soy sauce, and which bottles to buy.

Part 1: The claims

Coconut aminos is sold as a sauce made from the fermented sap of coconut palm flowers, with salt added. The marketing rests on four ideas:

1. Lower sodium than soy sauce.
2. Soy-free, for people avoiding soy.
3. Gluten-free, for people avoiding wheat.
4. "Aminos," implying a source of amino acids, the building blocks of protein.

The second claim is true by definition: there's no soy in it. The others need checking.

Part 2: What the research shows

First, an admission

We searched PubMed for clinical or nutritional studies on coconut aminos itself, and didn't find any peer-reviewed research we could verify. No trials, no published lab analysis of commercial products.

That's unusual for a product this popular. It means anything you read about coconut aminos' health effects is either from a label or borrowed from research on something else. We'll be explicit about which is which.

Sodium: the claim that matters most

Start with why sodium matters.

The strongest evidence linking salt to health comes from large meta-analyses of randomized trials. A Cochrane review of 34 trials with 3,230 people found that cutting salt by about 4.4 g a day lowered systolic blood pressure by about 4.2 mm Hg and diastolic by about 2.1 mm Hg (He 2013). A larger 2020 BMJ meta-analysis of 133 studies found a dose-response relationship: each 50 mmol drop in daily sodium excretion lowered systolic pressure by about 1.1 mm Hg, with bigger effects in older people and those with higher blood pressure (Huang 2020).

That's real. Salt reduction lowers blood pressure.

Now the soy sauce part. Soy sauce is very salty. A 2025 study tested 102 soy sauces sold in Malaysian supermarkets and found salty soy sauces averaged about 4,987 mg of sodium per 100 g, and light soy sauces about 5,710 mg per 100 g (Harun 2025). Those are Malaysian products, so US brands may differ, but they show the scale. Soy sauce is mostly a salt delivery system with flavor attached.

So is coconut aminos lower? On the labels, generally yes. But here's the catch.

We couldn't find an independent lab analysis of commercial coconut aminos to verify the sodium figures on bottles. And sodium varies by brand. "Less sodium than soy sauce" is a comparison to an extremely salty product, and some coconut aminos may still be salty.

Think of it like comparing a light rain to a flood. Both get you wet. The light rain is better, but it's still rain.

The practical answer is simple: read the two labels side by side, using the same serving size. If you're on a low-sodium diet, the milligrams per teaspoon are what count.

What a teaspoon of salt reduction actually buys you

It helps to put the blood pressure numbers in everyday terms. In the Cochrane review, the average salt cut was about 4.4 g a day, roughly three-quarters of a teaspoon of salt (He 2013). That's far more than you'd save by switching one condiment, unless you use soy sauce heavily at every meal.

So the swap is most worth it for two kinds of people. People who pour soy sauce freely, several times a day, will see the largest sodium difference. And people with high blood pressure, who in the BMJ analysis got larger reductions for the same cut in sodium (Huang 2020), have the most to gain from every milligram.

For everyone else, coconut aminos is a reasonable choice for taste, soy avoidance or gluten avoidance. Just don't expect it to fix a salty diet on its own.

Gluten: soy sauce varies

Soy sauce is made from soybeans "with varying amounts of wheat or no wheat at all," according to a review of soy sauce production (O'toole 2019). Traditional brewed soy sauce is made in two fermentation stages and often uses wheat (Devanthi 2019). So many soy sauces contain gluten, but not all.

Coconut aminos contains no wheat, which makes it a straightforward choice if you avoid gluten. If you have celiac disease, look for a certified gluten-free label on whichever sauce you buy, because the ingredient list alone doesn't tell you about cross-contamination.

"Aminos": mostly a name

"Aminos" suggests a meaningful protein source. We found no published analysis showing coconut aminos delivers a nutritionally meaningful amount of amino acids at normal serving sizes. Coconut sap itself is mainly sugars with some minerals and vitamin C (Asghar 2020). You use a teaspoon or two of this sauce. Treat "aminos" as a flavor name, not a nutrition claim.

The sugar side

Because coconut aminos starts as coconut sap, it tastes sweeter than soy sauce. The sap is sugar-rich (Asghar 2020), and coconut products made from it are mostly sugars (Saraiva 2023). Fermentation changes the profile, and we couldn't verify sugar figures for finished commercial aminos. Check the label for carbohydrates per serving, especially if you're watching sugar.

Part 3: How to choose, and what to buy

When coconut aminos makes sense

• You avoid soy for allergy or other reasons.
• You avoid gluten and want a simple, wheat-free option.
• You want less sodium and your label comparison shows a meaningful difference.
• You like the taste, which is milder and sweeter than soy sauce, good in dressings and stir-fries.

When soy sauce is fine

If you don't avoid soy or gluten, and you use small amounts, a reduced-sodium soy sauce may give you similar sodium savings for less money. The Malaysian study showed that reformulated soy sauce with less salt was feasible and well accepted by tasters (Harun 2025). Compare the labels.

Best coconut aminos

Coconut Secret Coconut Aminos is our benchmark bottle. Compare its sodium per teaspoon with your current soy sauce.

Big Tree Farms Organic Coconut Aminos is an organic option from a brand that also makes coconut sugar. Good for stir-fries.

Bragg Organic Coconut Aminos is an organic choice. The brand sells more than one kind of aminos, so make sure the bottle says coconut if you avoid soy.

Thrive Market Organic Coconut Aminos is a value option if you already shop there; compare per-ounce price.

Coconut aminos vs liquid aminos

"Liquid aminos" products are often soy-based, a different thing from coconut aminos despite the similar name. If you're avoiding soy, read the front label carefully. If you're not, compare sodium the same way.

Which bottle to start with

If you're new to it, buy one bottle of Coconut Secret Coconut Aminos or Big Tree Farms Organic Coconut Aminos, use it in a dressing where its sweetness shows, and decide from there.

How to swap it in

1. Start 1:1 in recipes, then adjust, since it's sweeter and less salty.
2. Compare labels at the same serving size.
3. Add a little acid, like rice vinegar or lime, if a dish tastes flat without soy sauce's salt.
4. Count the sodium anyway. The blood pressure benefit comes from total salt in your day, not one swap (Huang 2020).

The bottom line

Coconut aminos is a useful soy-free, wheat-free sauce that's generally lower in sodium than soy sauce. But it has essentially no published research of its own, its "aminos" name promises more than it delivers, and its sodium still needs checking on the label. The real health lever is your total salt intake (He 2013; Huang 2020).

At your next grocery trip, put a bottle of Bragg Organic Coconut Aminos next to your soy sauce, compare the sodium per teaspoon, and use whichever wins in tonight's stir-fry.

This article is for general education and is not medical advice. If you have a health condition, take medication, or are pregnant, talk to a doctor or registered dietitian before changing your diet or skincare.

Sources

1. He FJ et al. (2013). Effect of longer term modest salt reduction on blood pressure: Cochrane systematic review and meta-analysis of randomised trials. BMJ. PubMed: https://pubmed.ncbi.nlm.nih.gov/23558162/ | DOI: https://doi.org/10.1136/bmj.f1325
2. Huang L et al. (2020). Effect of dose and duration of reduction in dietary sodium on blood pressure levels: systematic review and meta-analysis of randomised trials. BMJ. PubMed: https://pubmed.ncbi.nlm.nih.gov/32094151/ | DOI: https://doi.org/10.1136/bmj.m315
3. Harun Z et al. (2025). Reformulation of soy sauce to reduce sodium content and assessment of manufacturer readiness, consumer acceptance, and shelf life. Sci Rep. PubMed: https://pubmed.ncbi.nlm.nih.gov/41315354/ | DOI: https://doi.org/10.1038/s41598-025-26750-2
4. O'toole DK et al. (2019). The role of microorganisms in soy sauce production. Adv Appl Microbiol. PubMed: https://pubmed.ncbi.nlm.nih.gov/31495405/ | DOI: https://doi.org/10.1016/bs.aambs.2019.07.002
5. Devanthi PVP et al. (2019). Soy sauce fermentation: Microorganisms, aroma formation, and process modification. Food Res Int. PubMed: https://pubmed.ncbi.nlm.nih.gov/31000250/ | DOI: https://doi.org/10.1016/j.foodres.2019.03.010
6. Asghar MT et al. (2020). Coconut (Cocos nucifera L.) sap as a potential source of sugar: Antioxidant and nutritional properties. Food Sci Nutr. PubMed: https://pubmed.ncbi.nlm.nih.gov/32328243/ | DOI: https://doi.org/10.1002/fsn3.1191
7. Saraiva A et al. (2023). Coconut Sugar: Chemical Analysis and Nutritional Profile; Health Impacts; Safety and Quality Control; Food Industry Applications. Int J Environ Res Public Health. PubMed: https://pubmed.ncbi.nlm.nih.gov/36834366/ | DOI: https://doi.org/10.3390/ijerph20043671

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