Ceylon Cinnamon: Benefits, Safety & How to Buy Real Ceylon

Ceylon cinnamon is sold as the safe cinnamon. That’s half true.

Ceylon has trace amounts of coumarin, the compound that can push a daily teaspoon of supermarket cinnamon past Europe’s liver-safety limit. But it isn’t lower in lead. In a 2025 test, 8 of 10 Ceylon powders carried more lead than typical regular cinnamon.

And the “7,200 mg” softgel in your Facebook feed holds 600 mg of extract.

Key takeaways

Use Ceylon for anything you eat daily. Cassia is fine for occasional baking.
Buy on proof: C. verum on the label, Sri Lanka origin, and a lab report showing low lead.
Expect a small blood sugar effect at best. Only 9 of 49 trials in the largest review tested Ceylon.
Ignore the big number on softgels. Read “from X mg of N:1 extract.”
On diabetes medicine, a statin or a blood thinner? Ask your doctor first (see our medical disclaimer).

What is Ceylon cinnamon?

Ceylon cinnamon is the inner bark of Cinnamomum verum (synonym C. zeylanicum), grown mainly in Sri Lanka. Ceylon is Sri Lanka’s old name. Sellers call it true cinnamon.

Workers roll thin strips of bark into quills. A Ceylon stick looks like a cigar of paper-thin, light tan layers.

Since 2022, EU law reserves the name “Ceylon Cinnamon” for cinnamon grown in Sri Lanka, with coumarin capped below 0.004% (Sri Lanka Export Development Board).

The grades, from Alba to Hamburg

Sri Lanka grades quills by thickness. Thinner quills sell for more.

Grade	Quill thickness	What it means
Alba	Up to 6 mm	The thinnest quills, top price
Continental (C5, C4 and others)	Under 16 mm	Standard export quills
Mexican (M5, M4)	Under 19 mm	Thicker quills
Hamburg (H1 to H3)	Under 32 mm	The coarsest quills
Quillings, featherings, chips	Broken pieces and trimmings	The lowest grades

Powder comes from peelings and trimmings, so “Alba” on a cheap powder deserves suspicion.

Ceylon vs cassia vs Saigon cinnamon

All four are real cinnamon. Their coumarin levels differ by up to 400 times.

	Ceylon	Chinese cassia	Indonesian (Korintje)	Saigon
Species	C. verum	C. cassia	C. burmannii	C. loureiroi
Grown in	Sri Lanka	China	Indonesia	Vietnam
Coumarin in authentic bark	17 mg/kg	310 mg/kg	2,140 mg/kg	6,970 mg/kg
Stick	Many thin, papery layers	One thick, hard roll	One thick roll	One thick roll
Taste	Mild, sweet, floral	Spicy	Spicy-sweet	Hottest
Typical US price	$1.10 to $5.50/oz	Rarely sold by name	$0.80 to $2.30/oz	$0.50 to $1.30/oz

Coumarin figures come from authenticated bark (Wang 2013). The same study traced most US supermarket cinnamon to Indonesian cassia.

Which brands are Ceylon?

Simply Organic sells Ceylon only in the jar labeled “Ceylon” (C. verum). Its plain “Cinnamon” is a different product.
McCormick lists no ground Ceylon on its site, and McCormick Gourmet Organic is Saigon.
Costco and Trader Joe’s both sell Saigon.

If the label names no species, assume cassia.

Ceylon cinnamon benefits: what the research shows

Cinnamon lowers fasting blood sugar slightly in type 2 diabetes. Every other benefit rests on weak evidence.

Most studies didn’t test Ceylon

The largest review (2025) pooled 49 trials. Sixteen used cassia, 9 used Ceylon, and 24 never named the species. The authors rated the certainty of every result very low (Jafari 2025).

When a site says “studies show Ceylon lowers blood sugar,” the studies usually used cassia or an unnamed species.

Claim	What trials found	Which cinnamon	Verdict
Fasting blood sugar (type 2 diabetes)	About 11 to 15 mg/dL lower on average	Mostly cassia or unnamed	Small effect, low certainty
A1C	A small drop in some reviews, none in Cochrane and others	Mixed. No Ceylon subgroup dropped	Inconsistent
Insulin resistance	Modest improvement	Mixed	Weak to moderate
Cholesterol and triglycerides	Small drops in some reviews, none in others	Mixed. A Ceylon trial built to lower LDL failed	Weak
Blood pressure	About 5/3 mmHg in one review, nothing in another	Mixed	Weak
Weight	Under 1 kg, none in the largest review	Mixed. Ceylon at 3 g a day changed nothing	Not a weight-loss aid
PCOS	Lower insulin resistance in small trials	Mostly unnamed	Weak to moderate
Memory	No human trial	None	Unsupported

Sources: de Moura 2025, Zarezadeh 2023, Cochrane 2012, Krittanawong 2021, Hadi 2020, Yazdanpanah 2019, Xiaomei 2024.

The Ceylon trials

In Brazil, 160 people with type 2 diabetes took 3 g of C. verum a day for 90 days. A1C fell 0.2 points more than with placebo, and weight didn’t change (Lira Neto 2021).
In Sri Lanka, 150 adults with high LDL took 1 g of standardized extract a day for 12 weeks. LDL, the main target, didn’t move, but fasting glucose ended 8.6 mg/dL lower than with placebo (Muthukuda 2025).
In a second Sri Lankan trial, 210 people with type 2 diabetes took 250 or 500 mg of extract a day for 4 months, and their glucose and A1C fell from baseline. The authors hold a patent on the extract (Ranasinghe 2025).
In Sweden, 6 g taken with a sugar drink did nothing for 10 people with prediabetes (Wickenberg 2011).

No trial has compared Ceylon and cassia head to head, so nothing shows Ceylon works better. Its advantage is that it’s safer to eat daily.

Buyer reviews show the same spread. One reviewer’s A1C stayed “EXACTLY THE SAME (6.5)” after months on it, while others report small drops.

Is Ceylon cinnamon like Ozempic?

No. The “melts belly fat like Ozempic” videos rest on one study of 15 healthy people who ate a single meal with 3 g of cassia. GLP-1 rose, but blood sugar and fullness didn’t change (Hlebowicz 2009).

Pooled weight loss from cinnamon is under 1 kg. For drugs that work on GLP-1, see oral GLP-1 options.

Is Ceylon cinnamon a nootropic?

Not in humans. The “honey and cinnamon cure” list started as a 1995 Weekly World News tabloid item. Of 40 cinnamon-and-brain studies in a 2023 review, 2 involved people (Nakhaee 2023).

The memory claims come from Rush University mice that “learned better” on cinnamon (Modi 2016). The same lab has since had several papers retracted, including one on the same compound. See do brain supplements really work?

Is Ceylon cinnamon safe?

In food amounts, yes, for most people. Two risks matter: coumarin and lead.

Coumarin and your liver

At high daily doses, coumarin can harm the liver in sensitive people. Europe’s limit is 0.1 mg per kg of body weight per day (EFSA). Cassia averages about 3,000 mg/kg and reaches 10,000 (BfR). Ceylon samples in a 2025 EU survey had a median of 3.5 mg/kg (Ghidotti 2025).

Your weight	Typical cassia hits the limit at	Ceylon hits the limit at
15 kg (33 lb) child	About ⅕ teaspoon	About 14 teaspoons
60 kg (132 lb) adult	About ¾ teaspoon	About 58 teaspoons
70 kg (154 lb) adult	About 0.9 teaspoon	About 67 teaspoons

The Ceylon column assumes Sri Lanka’s 40 mg/kg maximum. A teaspoon weighs 2.6 g (USDA). EFSA considers short spells over the limit harmless, so the concern is a daily habit.

Mislabeled Ceylon changes that math. Market surveys have found “Ceylon” with several hundred mg/kg of coumarin, which means cassia was mixed in, and only a coumarin result on a lab report settles it.

Liver injury is rare. NIH’s LiverTox rates cinnamon a “possible rare cause,” based on at least three cases (LiverTox). In one, a 73-year-old woman developed hepatitis a week after adding a cinnamon supplement to her statin (Brancheau 2015).

Lead: why Ceylon isn’t automatically safer

No cinnamon is lead-free, and Ceylon often tests higher than cassia.

Consumer Reports tested 36 cinnamons in 2024 and found 12 above 1 ppm. None of the six cleanest was Ceylon, and the only Ceylon tested, from Penzeys, measured 0.78 ppm (Consumer Reports).
Mamavation found 500 ppb or more in 8 of 10 Ceylon powders in 2025 (table below).
The EU Joint Research Centre found 2 of 44 Ceylon samples over Europe’s lead limit in 2025 (JRC).

FDA’s lead alerts since March 2024 name more than 20 brands, mostly cheap ground cinnamon. None is labeled Ceylon (FDA), and we found no US recall of a Ceylon product.

Ceylon powder (Mamavation, one sample each)	Lead (ppb)
One Farm Organic Ceylon	4,257
Anthony’s Ceylon Organic	1,259
Terrasoul Organic Ceylon	985
Micro Ingredients Organic Ceylon	821
Spicely Organics Ceylon	728
From Great Origins Organic Ceylon	570
Frontier Co-op Organic Fair Trade Ceylon	552
True Organic Ceylon	509
Diaspora Co. Peni Miris	223
Simply Organic Ceylon	0.44 (an outlier next to every other result)

Lead level (1 ppm = 1,000 ppb)	Lead per teaspoon	Share of California’s daily limit
0.04 ppm (cleanest in Consumer Reports’ test)	0.1 µg	21%
0.78 ppm (Penzeys Ceylon)	2 µg	About 400%
2 ppm (FDA alert level)	5.2 µg	About 1,000%

California’s Prop 65 limit (0.5 µg a day) is a strict warning line, not a poisoning line. New York recalls spices above 1 ppm, the EU caps them at 2 ppm, and the US sets no federal limit.

Lead matters most for kids. One parent gives a toddler “1/4 tsp cinnamon in a cup of milk” several times a day. For daily use like that, look for a lot test near 0.2 ppm or lower, the range of Consumer Reports’ best picks.

“Lead-free” has no legal meaning for spices, and FDA says some lead in food is unavoidable. A brand that claims it should show the lab report and its detection limit.

Kidneys and oxalate

Cinnamon is high in oxalate, but only about 6% dissolves. In a small trial, 3 g a day didn’t raise urinary oxalate (Tang 2008). The 12-week Sri Lankan extract trial found no change in kidney function in healthy people.

No data exist for kidney disease. With CKD or kidney stones, ask your doctor before supplement doses. For kidneys, lead is the bigger risk.

Who should talk to a doctor first

If you…	What to know
Take metformin or other diabetes medicine	Trials added cinnamon on top of medication. It can’t replace it. Watch for lows.
Take a statin	Hepatitis has been reported with a cinnamon supplement plus a statin.
Take a blood thinner	MSKCC says cinnamon may in theory raise prothrombin time. No trial has checked.
Are pregnant or breastfeeding	NCCIH says larger amounts of Ceylon in pregnancy are considered unsafe.
Have liver disease	Ask first. Your liver handles coumarin.
Are allergic to Peru balsam	The EU monograph says don’t use it.
Have surgery coming up	Tell your surgical team about every supplement.

Some buyers quit metformin on their own (one “slowly weaned” off 2,000 mg a day). Don’t change your medication yourself. Keep checking your meter and tell your prescriber.

Trial side effects were mild. Stomach upset was as common on placebo.

How to tell if cinnamon is real Ceylon

Sticks you can judge by eye. Powder you can’t.

A Ceylon stick is many thin, papery layers that crumble in your hand. Cassia is one thick, hard layer curled in from both sides. Once ground, Germany’s food risk agency calls telling them apart by eye “hardly possible,” and color doesn’t help.

Fraud is common. In the EU’s 2025 survey, 9% of “Ceylon” products were partly or fully cassia. About 5% passed every quality, fraud and safety check, and all of those were whole sticks.

Proof, strongest first:

A lab report (COA) for your lot, with coumarin and lead. See how to read a certificate of analysis.
The EU PGI logo or Sri Lanka’s “Pure Ceylon Cinnamon” mark, plus “Product of Sri Lanka.”
Whole quills you grind yourself.
Cinnamomum verum or C. zeylanicum in the ingredients. NOW Foods’ Cinnamon Bark label allows “C. verum and/or C. aromaticum and/or C. burmannii,” so “and/or” lists fail this check.
A believable price. Bulk organic Ceylon costs $1.10 to $2.60 an ounce. “Ceylon” at Costco-Saigon prices (about $0.50) needs a lab report.

Skip the iodine test from social media. It only detects starch filler.

Taste gives a clue. Real Ceylon is mild, sweet and floral. If it burns like Red Hots, it’s probably cassia, and many “tastes like sawdust” reviews come from buyers expecting that burn.

Powder, capsules, extract or MCT softgels?

Form	Good for	Watch out for
Sticks	The only form you can verify by eye	You need a grinder
Powder	Cheapest per gram, and richer in polyphenols than capsules (ConsumerLab)	Lead varies by lot
Capsules	A measured dose, no taste	2.5 to 3 times the cost per gram
Extract	A small pill, sometimes standardized	Few trials, and the ratio can’t be checked without a lab report
MCT softgels	Easy to swallow	The same dose as cheaper pills, plus subscription traps

What “7,200 mg” means on the label

The front number counts the bark that went into the extract, not what’s in the softgel. A 600 mg dose of 12:1 extract becomes “7,200 mg equivalent.” FDA rules put the extract’s own weight on the Supplement Facts panel (FDA). Look for “from X mg of N:1 extract.”

Product	Real extract per day	Ratio	Front label	Cost per day (Oct 2026)
Lirae	600 mg (1 softgel)	12:1	7,200 mg	$1.17
Metabolae	600 mg (1 softgel)	12:1	7,200 mg	$1.00
Micro Ingredients	600 mg (3 softgels)	Not listed	7,200 mg	$0.27
Horbaach	600 mg (3 capsules)	10:1	6,000 mg	$0.31
Nature’s Truth	200 mg (1 capsule)	10:1	2,000 mg	$0.17

The declared dose is the same, but the daily price varies up to fourfold.

One buyer cut softgels open and “only found oil inside. No cinnamon!” (Reddit). Extracts can taste weak, so that alone proves nothing. A lab report showing species and dose would settle it.

Does MCT oil help absorption?

No study has tested MCT oil with cinnamon extract. The absorption claim borrows from rat studies of purified cinnamaldehyde in engineered emulsions. In a softgel, MCT is liquid filler.

Cinnulin PF and CinSulin aren’t Ceylon

Both branded extracts come from cassia: Cinnulin PF from Indonesian cassia (Rafehi 2012), CinSulin from cassia water extract (Anderson 2015).

Are Metabolae, Lirae and Primal Remedies legit?

The products appear real, and the label math adds up. The problems are price, proof and billing.

Five brands (Elorita, Primal Remedies, Resia, Lirae and Metabolae) run near-identical Facebook ads. Lirae and Metabolae print word-for-word identical Supplement Facts panels.
None publishes a lab report for species, coumarin or lead. Their “lab tested” badges name no lab.
Lirae’s terms list no company name or address and say orders “cannot be canceled” (Lirae terms).
Metabolae calls its softgels vegan. The capsule is gelatin.
The top complaint across all five is a 28-day auto-renewing subscription buyers say they never chose. About 50 people described it in the reviews and Reddit threads we read (Trustpilot).

One buyer wrote: “Despite me reading everything before I ordered, they still signed me up for a subscription that renews every 28 days.”

Before you pay:

Tick the one-time purchase box, and screenshot it.
Check the cancel window. Some brands allow only a few hours.
Find a phone number. A contact form alone is a warning sign.
Read the refund policy itself. Several limit “money back” to the first order.
Buy direct or from a retailer you trust. Buyers report counterfeits from third-party Amazon sellers.

How much Ceylon cinnamon do people take?

No dose is established. Trials ranged from 120 mg of extract to 6 g of powder a day.

Ceylon powder trials used 1 to 3 g a day, about ⅓ to 1 teaspoon.
Ceylon extract trials used 250 to 1,000 mg a day.
The EU’s traditional-use monograph lists 0.5 to 1 g as tea, up to four times a day, for mild bloating.

One gram holds about 2.5 calories, so “breaking a fast” depends on your rules. Treat these as study amounts and ask your doctor about yours.

How to choose the best Ceylon cinnamon

Pick on proof, not on the word “Ceylon.” Run the authenticity checks above, then require these three.

Lead on a lot report near 0.2 ppm or lower, never above 1.
Coumarin in single or low double digits (mg/kg).
Non-irradiated, with no ethylene oxide.

Avoid:

Any brand on FDA’s cinnamon lead alert list.
“Ceylon” blends that are mostly cassia. New Chapter Cinnamon Force has 105 mg cassia and 35 mg Ceylon per softgel.
Formulas that hide the cinnamon dose behind berberine or chromium.
Subscription-only brands with no company address.

Our shortlist

No Ceylon product carries an NSF, USP or ConsumerLab seal. We ranked on what you can verify: species, origin, public test data and price. Request a current lot report before you commit.

Pick	Why	Watch out for
Premium powder: Diaspora Co. Peni Miris	C. verum from named Sri Lankan forest gardens, mill date on the label. Lowest lead (223 ppb) among the Ceylon powders with consistent results in Mamavation’s test.	About $10.90 an ounce. No public lab report.
Value powder: Frontier Co-op Organic Fair Trade Ceylon	C. verum from Sri Lanka, organic, non-irradiated. About $1.80 an ounce by the pound.	One sample tested 552 ppb lead. Ask for a lot report for daily use.
Easiest to find: Simply Organic Ceylon	C. verum, organic, non-irradiated. Told Consumer Reports it tests every shipment against a 1 ppm limit.	Origin not stated. Its 0.44 ppb result is an outlier.
Budget capsule: Spring Valley Ceylon (Walmart)	NIH’s label database confirms organic C. verum, Product of Sri Lanka. About $0.14 a day.	No testing claim.
Tested capsule: Druera	One Sri Lankan farm, and the only Ceylon capsule we found with a named-lab heavy metal report (all four metals not detected, July 2026).	Brand-paid test. An independent test found lead in its powder.
Extract: Nature’s Truth Concentrated Ceylon	200 mg of 10:1 C. verum, honest label math. About $0.17 a day.	No testing claim.

The cheapest option is half a teaspoon of tested bulk powder a day.

Where to buy Ceylon cinnamon

Store	Sells Ceylon?
Walmart	Yes. Simply Organic, Frontier, Spring Valley capsules
Whole Foods	Yes. Simply Organic Ceylon (its 365 cinnamon isn’t Ceylon)
Amazon	Yes. Almost every brand, plus many look-alike sellers
Thrive Market	Yes. Simply Organic Ceylon
Costco	No. Kirkland is Saigon from Vietnam
Trader Joe’s	No. Its organic cinnamon is Saigon

Stock changes. Check the label.

Frequently asked questions

Is Ceylon cinnamon better than regular cinnamon?

It’s safer for daily use because it has trace amounts of coumarin. It isn’t proven to work better for blood sugar. Bake with either. For a daily teaspoon, use Ceylon.

Which Ceylon cinnamon is lead-free?

None. All cinnamon contains some lead, and “lead-free” has no legal meaning for spices. Look for a lot lab report with lead in ppm. Consumer Reports’ cleanest products tested 0.02 to 0.15 ppm.

Was Ceylon cinnamon recalled?

No. FDA’s cinnamon lead alerts since March 2024 name more than 20 brands, and none is labeled Ceylon. Ceylon still contains lead, so buy a tested brand.

How much Ceylon cinnamon per day is safe?

A teaspoon a day stays far under Europe’s coumarin limit. Trials used 1 to 3 g of powder a day. If you take medication, ask your doctor what fits you.

Can Ceylon cinnamon cause liver damage?

Rarely. NIH’s LiverTox calls cinnamon a “possible rare cause” of liver injury, mostly linked to coumarin, which Ceylon barely contains. Take extra care with statins or liver disease.

Can I take Ceylon cinnamon with metformin?

Many trial participants did. Ask your doctor first and keep checking your blood sugar. Never cut or stop metformin on your own. Cinnamon can’t replace it.

Does Ceylon cinnamon lower A1C?

Slightly, at best. In a Brazilian trial, 3 g a day for 90 days lowered A1C 0.2 points more than placebo. Cochrane and other reviews found no clear A1C effect.

When is the best time to take Ceylon cinnamon?

With a carb-containing meal. Most trials gave it that way, and single-meal studies show effects only when cinnamon goes in with the food. No study has tested bedtime dosing.

What are the benefits of Ceylon cinnamon for women?

Small trials in women with PCOS found lower insulin resistance, and one matched metformin on that measure over 8 weeks. The evidence is weak. Larger amounts during pregnancy are considered unsafe.

Bottom line

Use Ceylon for anything you eat daily, buy a brand that shows you a lead number, and don’t expect it to replace a medicine.

What we don’t know

How safe daily supplements are beyond a few months.
Which products ConsumerLab approved in 2025 (its results are paywalled).
Whether MCT oil changes absorption.
How Ceylon affects people with kidney disease. A trial is underway.