Sulforaphane is a naturally occurring compound found in cruciferous vegetables, especially broccoli seeds. Unlike glucoraphanin (its inactive precursor), the sulforaphane in this Sulfodyne extract is already in active form, giving optimal bioavailability without depending on enzymatic conversion by myrosinase. Typically only 20-40% of glucoraphanin is converted into sulforaphane through ordinary food intake, and that conversion depends on the freshness of the vegetable, how it is prepared (cooking destroys myrosinase) and each person’s gut microbiome. A 200 mg capsule of this extract provides the equivalent of nearly 380 g of raw broccoli.

Because the active compound is already stabilised, this extract removes the uncertainty of digestive conversion and delivers a consistent, measurable dose of sulforaphane every time — a genuine advantage over glucoraphanin-based products that rely on unpredictable conversion rates.

Sulforaphane is studied for its antioxidant properties and its capacity to support the body’s natural cellular defence mechanisms. The 5% minimum concentration in this Sulfodyne extract ensures a precise, reproducible dose of active molecule in every capsule. A patented manufacturing process, including microencapsulation, protects the sulforaphane against oxidation and heat degradation — two factors that limit the effectiveness of many competing extracts.

The broccoli seeds (Brassica oleracea var. italica) are grown in Europe and processed in France; encapsulation takes place immediately after extraction to protect the active compound. Production is ISO 9001 and ISO 22000 certified, with no excipients, no GMOs, no nanoparticles, and no animal testing. The capsule shell is made from plant-based pullulan, suitable for vegetarians and vegans. Sulfodyne® is a registered trademark of Ingood by Olga.

Take 1-2 capsules a day with a large glass of water, ideally with a meal. A 200 mg capsule provides 10 mg of active sulforaphane; a 100 mg capsule provides 5 mg. Dosage can be adjusted to individual needs and a healthcare professional’s advice. We recommend starting with one capsule for two weeks to check tolerance before adjusting further. Sulforaphane can be taken over a course of several weeks to several months; a 60-capsule bottle covers one to two months depending on the dose used.

This food supplement is not recommended for pregnant or breastfeeding women. If you are undergoing medical treatment, particularly anticoagulant or thyroid therapy, consult your doctor before use. People with a known sensitivity to cruciferous vegetables should also seek medical advice. Do not exceed the recommended daily dose. A food supplement is not a substitute for a varied, balanced diet and a healthy lifestyle. Store in a cool, dry place away from light and humidity.

What is the advantage of already-active sulforaphane?

Active sulforaphane is directly absorbed by the body without depending on each person’s gut microbiome converting glucoraphanin. This guarantees a consistent, high bioavailability regardless of how food is prepared or individual digestive variation.

How much broccoli would I need to eat for the same intake?

A 200 mg capsule of Sulfodyne extract (10 mg active sulforaphane) is roughly equivalent to 380 g of raw broccoli. Cooking destroys much of the myrosinase needed to convert glucoraphanin, so the supplement offers a far more reliable and practical intake than diet alone.

Can sulforaphane be taken long term?

Yes, sulforaphane can be taken over an extended course of several weeks to months. We recommend starting with a moderate dose (one capsule a day) for two weeks, then adjusting according to tolerance and goals. Consult a healthcare professional for very long-term use.

Herba Barona is an independent specialist supplement shop in the heart of Paris — established in 2006. What you order is genuinely on our shelves: we ship from our own stock, with no dropshipping and no long waits.

Visit us at 10 rue Théophile Roussel, Paris 12 — or use Click & Collect and pick up your order in-store. We also deliver across France and Europe. Friendly, expert advice in English from our team.

Where is the shop?

Herba Barona is at 10 rue Théophile Roussel, 75012 Paris — a two-minute walk from Ledru-Rollin (line 8), close to Bastille. Open Tuesday to Saturday, 9:30 am–6:30 pm.

Can I order online or collect in store?

Yes. We ship across France and Europe under the same conditions as our French store, or choose Click & Collect to pick up your order for free at our Paris shop.