Legal status · United States
Is Sulforaphane legal in the United States?
Written by Aaron CuhaReviewed Sep 2026
Direct answer
Sulforaphane can be sold in the United States as a supplement or cosmetic ingredient, classified as "Sold as a supplement". That is not drug approval: FDA has not evaluated any health claim, and injectable or "research use only" versions fall outside supplement rules, so that label does not make human use lawful. On the evidence, 7 human studies are cited on its profile.
Sulforaphane in the United States at a glance
| Classification | Sold as a supplement |
|---|---|
| Note | Sold as a dietary supplement. No approved indication. Products are usually standardised to the precursor glucoraphanin, and the delivered sulforaphane dose depends on whether active myrosinase is present. |
| FDA approval status | Not an approved drug for any indication. Sold as a dietary supplement, usually as broccoli seed or sprout extract standardised to glucoraphanin rather than to sulforaphane itself. |
| Human studies cited | 7 of 7 citations on the profile |
| Reviewed | Sep 2026 |
Classification and note come from the Sulforaphane profile, checked against U.S. Food and Drug Administration (FDA) listings at the reviewed date.
What this means
- 01
Sulforaphane can be sold in the United States as a supplement, food or cosmetic ingredient under the classification above, without drug approval.
- 02
Supplement status means FDA has not evaluated any health claim; manufacturers are responsible for safety and labeling, and quality varies by product.
- 03
Injectable or "research use only" versions are not supplements. That label does not make human use lawful, and injectables fall under medicines rules.
What Sulforaphane is
Three randomised trials with prespecified primary endpoints, three misses: PSA slope in 78 men after prostatectomy, fasting glucose in 74 adults with prediabetes, and the autism replication in 45 children. The cleanest positive human result is a urinary detoxification biomarker, a 63.2 percent rise in benzene mercapturic acid excretion in Qidong, China.
Sulforaphane has more genuinely randomised human data behind it than almost any other supplement-aisle compound, which makes it a useful test case, because the pattern in that data is consistent and it is not the pattern the marketing describes. The trials that measured a biomarker got results.
Mechanism: Sulforaphane modifies cysteine residues on KEAP1, which releases the transcription factor NRF2 to enter the nucleus and drive a large battery of phase 2 detoxification and antioxidant genes, including glutathione S-transferases and NAD(P)H quinone dehydrogenase 1. This is why its most reproducible human effect is on the conjugation and excretion of electrophilic toxicants rather than on any disease process: the pathway it activates is literally a disposal system.
Regulatory history: Not an approved drug for any indication. Sold as a dietary supplement, usually as broccoli seed or sprout extract standardised to glucoraphanin rather than to sulforaphane itself.
How FDA treats this kind of product
Approves prescription drugs by indication and polices unapproved products, including peptides sold online. Compounding pharmacies may prepare some compounds under a prescription when the FDA places them on a permitted bulk-substances category.
The classification above is the The Longevity Archive reading of U.S. Food and Drug Administration listings for Sulforaphane at the reviewed date, not a legal opinion. Rules change, and importing, prescribing and possessing a compound can each be treated differently. Check the regulator directly before acting on anything here.
Sulforaphane in other countries
Frequently asked questions
Is Sulforaphane legal in the United States?
Sulforaphane can be sold in the United States as a supplement or cosmetic ingredient, classified as "Sold as a supplement". That is not drug approval: FDA has not evaluated any health claim, and injectable or "research use only" versions fall outside supplement rules, so that label does not make human use lawful. On the evidence, 7 human studies are cited on its profile. Note: Sold as a dietary supplement. No approved indication. Products are usually standardised to the precursor glucoraphanin, and the delivered sulforaphane dose depends on whether active myrosinase is present.
Can I buy Sulforaphane in the United States?
Yes, in supplement or cosmetic form. In the United States Sulforaphane is classified as "Sold as a supplement", so oral, topical or cosmetic products can be sold under supplement rules. Injectable versions and products labeled "research use only" are not supplements and are not approved for human use. Note: Sold as a dietary supplement. No approved indication. Products are usually standardised to the precursor glucoraphanin, and the delivered sulforaphane dose depends on whether active myrosinase is present.
Is Sulforaphane FDA approved?
No. FDA status: Not an approved drug for any indication. Sold as a dietary supplement, usually as broccoli seed or sprout extract standardised to glucoraphanin rather than to sulforaphane itself.. Current US classification: "Sold as a supplement". On the evidence, 7 human studies are cited on its profile.
Related compounds in the United States
Full research profile
Mechanism, cited studies, FDA status and the full legal summary for Sulforaphane live on its compound profile.
Sulforaphane profileThis page is general information about the regulatory status of Sulforaphane in the United States, current as of Sep 2026. It is not legal advice, and classifications change; check U.S. Food and Drug Administration directly or consult a lawyer for a specific situation. Educational use only. This database summarizes published research. It is not medical advice and contains no dosing protocols or recommendations for personal use. The Longevity Archive has no vendor relationships and does not recommend where to buy anything.