Viridian
High Potency Black Seed Extract 20% QT
High Potency Black Seed capsules contain pure Nigella Sativa seed standardised to 20% thymoquinone. This is our most powerful black seed extract and up to 20 times more potent than other black seed supplements. Rich in active nutrients, black seed has been used in health and beauty regimes for more than 3000 years by cultures across the world.
Thymoquinone (TQ) is the main active constituent of Nigella sativa, and it is the TQ which has been shown to exhibit a vast range of well-researched therapeutic benefits. Most black seed supplements on the market will provide an average of 1%-2% TQ, whereas this high strength extract has been standardised to 20% TQ.
Nigella sativa is one of the most revered plants in the history of mankind. Tutankhamun is even believed to have had a bottle of black seed oil in his tomb. Also known as the ‘Blessed Seed’, black seed is used as a natural support for a wide range of issues and is often hailed as a ‘panacea’.
Conveniently presented in a one-a-day vegan capsule, each dose delivers a potent 250mg of black seed extract, a clinically studied dosage for daily use.
Contains 100% active ingredients, formulated by expert nutritionists with no artificial fillers and no nasties. Sourced according to Viridian’s strict ethical criteria including no animal testing, GMO or palm oil.
Pickup currently unavailable at FETTLE
How to Use
Ingredients
Health & safety
Food supplements should not be used as a substitute for a varied diet. Not recommended during pregnancy or breastfeeding unless on the advice of a healthcare practitioner. If taking prescribed medication, consult a physician before using this product. Do not exceed stated dose unless directed by a healthcare practitioner.
Product information
What delivery options are there?
-
Free Local Delivery: Orders over £30 within a 3-mile radius qualify for free local delivery.
-
Click & Collect: Order online and collect in-store. Most orders are ready within two hours.
-
Nationwide Delivery: We offer delivery across the UK, with free delivery on orders over £50.
Which payment methods do you accept?
We accept all major credit and debit cards, as shown at checkout. You can also pay using:
-
Apple Pay
-
Google Pay
-
PayPal
Please ensure that your billing address matches the address on your card statement. You don’t need an account to shop with us—but creating one allows you to track your orders and manage preferences easily.
How do I return my items?
Returns can be made in-store. Just bring your item(s) along with proof of purchase, such as your order confirmation or receipt.
How can I contact you?
Visit our contact us page for details.
Can I change or cancel my order?
If your order hasn’t been processed yet, we’ll do our best to help. Please contact us as soon as possible.
Fettle is a health store, reimagined.
Built in Holmfirth. Inspired by the wild.
We stock a wide range of curated products - carefully chosen foods, proven supplements, and low-impact home goods—with one aim: to help people feel well, live fully, and tread lightly.
We're guided by four principles:
Roam – move with purpose
Replenish – eat well, choose consciously
Rest – take space to recover
Renew – build resilience, inside and out
We favour quality over quantity, makers over mass production, and brands that back their ethics with action. You’ll find organic staples, therapeutic herbs, and sustainable tools for daily living—all under one roof.
Upstairs, our practitioner room offers tailored support, from nutrition to movement and mental clarity. Downstairs, you’ll find the starting point for your next chapter—whether that’s a new habit, a better meal, or a slower way of being.
Fettle is a basecamp for the everyday explorer.
Come as you are. Leave with what you need.