Bitter Almond

Botanical

What is it

Bitter almond (Prunus dulcis var. amara) is the seed of certain almond varieties that contain amygdalin, a cyanogenic glycoside that releases hydrogen cyanide when chewed or hydrolyzed. It is a separate variety from the common sweet almond.

Evidence for 1 use

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Flavoring use (processed)

Mixed Evidence

Used for marzipan and bakery flavor; not a health supplement.

How it works

Bitter almonds contain amygdalin, which is enzymatically broken down by beta-glucosidase (in plant cells and gut bacteria) to release glucose, benzaldehyde, and toxic hydrogen cyanide. Cyanide blocks mitochondrial cytochrome c oxidase, halting cellular ATP production. Bitter almond essential oil is processed to remove cyanide before food use. Raw bitter almonds are toxic; as few as 7-10 raw bitter almonds may cause acute poisoning in adults, and as few as one or two may harm children.

Dosage

Raw bitter almonds: no safe dose for self-use. Processed bitter almond oil (FFPA, free from prussic acid) is used in trace flavoring amounts.

When and how to take it

Processed almond extract is used in baking at trace amounts.

2 commercial forms

Compare the main delivery options and what they’re best suited for.

FFPA bitter almond oil (food grade)

Used in baking flavors.

Cyanide removed.

Raw bitter almonds

Sale is restricted in many jurisdictions.

Toxic.

Safety

Raw bitter almonds: acute cyanide poisoning risk (vomiting, headache, dizziness, seizures, coma, death). Processed almond extract is safe at culinary levels.

Who should be cautious

Avoid raw bitter almonds entirely. Especially dangerous for children, pregnant women, and people with B12 deficiency.

Interactions

Cyanide content interacts with vitamin B12 metabolism in chronic exposures.

Frequently asked questions

Can I eat bitter almonds?⌄

No. Raw bitter almonds contain toxic cyanide and are not safe to consume.

Is laetrile (amygdalin) a cancer treatment?⌄

No. Laetrile has been studied and found ineffective and toxic; it is not an approved cancer therapy.

References

Bitter Almond on Wikidata — Wikidata link

Bitter Almond on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Bitter Almond (PubMed search) — PubMed link

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.