Free UK delivery for orders over £50
365 Day Returns
£20 off orders over £100 – code APR20
Free UK delivery for orders over £50
365 Day Returns
£20 off orders over £100 – code APR20
Free UK delivery for orders over £50
365 Day Returns
£20 off orders over £100 – code APR20
Free UK delivery for orders over £50
365 Day Returns
£20 off orders over £100 – code APR20
Free UK delivery for orders over £50
365 Day Returns
£20 off orders over £100 – code APR20
Free UK delivery for orders over £50
365 Day Returns
£20 off orders over £100 – code APR20
Free UK delivery for orders over £50
365 Day Returns
£20 off orders over £100 – code APR20

L-Arginine - 1,000 mg

L-Arginine, an essential amino acid crucial for protein synthesis, converts to nitric oxide to enhance blood flow, stimulates insulin release, supports urea metabolism and DNA synthesis.

£9.89
Free sample each month
Pause or cancel anytime
365 day free returns
In stock. Next day delivery available.

Buy now, pay later from £2.75/mo with

Free UK shipping over £50, free returns.
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Key Benefits

  • Facilitates the dilation of blood vessels. 

  • Pharmaceutical grade source of essential amino acid.

  • Reduces blood pressure. 

This supplement created by NOW Foods contains a pharmaceutical grade of l-arginine which is made and quality tested in the USA with globally sourced ingredients and the bottle is made from 100% PCR (post-consumer recycled) resin.

L-Arginine is one of the 20 essential amino acids which are the building blocks of all natural protein. When l-arginine is ingested it gets converted into a chemical called nitric oxide (NO), which causes blood vessels to open wider for improved blood flow. It can also stimulate the release of insulin and is involved primarily in urea metabolism in the liver and excretion in the kidneys, as well as in DNA synthesis and protein production.   

This amino acid can be found in foods such as red meat, poultry, fish, and dairy, making it particularly difficult for vegan or vegetarian individuals to intake a sufficient amount of l-arginine. 

NOW Foods is a family owned company since its start in 1968, and has relentlessly been making the natural supplement and products industry better since. Its mission has always been and is to provide value in their products which empower people to lead healthier lives all around.   

With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.

Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.

Pharmaceutical Grade L-Arginine, Microcrystalline Cellulose, Hydroxypropyl Cellulose, Stearic Acid (vegetable source), Croscarmellose Sodium, Silicon Dioxide and Vegetarian Coating (hypromellose, calcium, carbonate, glycerin).

Shipping

At Healf, we prioritize safe and fast delivery for all our customers. Our carefully selected couriers are Royal Mail and DPD.

UK standard delivery

Enjoy free standard delivery on orders above £50, this option usually requires 2-3 working days. If your order is under £50, this delivery option is available for £3.99.

Next working day

For when you need our products urgently, we offer next working day shipping for £5.99. For orders placed before 12.00, we will ship it the same day to ensure you receive your order the next working day.

International

International deliveries can take 7 working days, and up to 4 weeks. The cost is £22.99 for orders below £50, £49.95 for orders above.

Returns

If for any reason you are not satisfied with your order, we provide free 365-day UK returns for all our customers. To initiate your return, simply contact us at team@healf.com, and we'll send you a return slip and help arrange a collection. The item you return must be sent in the same condition as received and inside the original packaging. Once received, we will notify you via email.

For international returns, we unfortunately do not cover the cost. However, we work with an array of carriers and can offer self-posting returns for customers shopping from outside the UK.

Take 1 tablet twice daily as needed with at least 8 oz. of water.
Take between meals or at bedtime.
Store in a cool, dry place after opening.

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Frequently asked questions

Every product undergoes our Healf Curation Process. With it, you can shop confidently knowing that every item has been tried and tested before it reaches you. Our Healf Curation Process includes three key steps: Brand Discovery, Expert Validation, and Community Testing. Through these, we assess quality, ingredients, effectiveness, and more, ensuring that every product empowers your wellbeing.

The Healf Journal offers detailed insights into different aspects of wellbeing, as well as guidance, research, recipes, and more to help you invest in your personal wellbeing journey. You can also subscribe to our weekly newsletters for the latest updates at Healf and in the wellbeing industry. Subscribe via the sign-up block at the bottom of this page.

We love people who check ingredients as carefully as we do, so you'll find detailed information about the ingredients used on every product page (where applicable). If you see something you'd like to flag with us or have additional questions, please don't hesitate to get in touch—we'd love to hear from you.

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By collaborating with a dedicated group of customers who test and review each product, we ensure that only those truly beneficial to your wellbeing are offered here at Healf.