L-Arginine 500mg

 5 out of 5  | 12 product reviews


240 Capsules - E465


L-Arginine 500mg


  • Involved in the production of nitric oxide
  • Promotes circulation to the extremities
  • Helps to retain and build muscle mass
  • Versatile 2-piece EasyGest capsules


Why take an L-Arginine supplement 500mg?


L-Arginine is thought to be involved in the production of nitric oxide, which helps to dilate blood vessels and improve blood flow to the extremities. As a result, many people find that it can promote normal circulation and vascular health. As an amino acid, it also supports the maintenance of muscle mass. While it is possible to get sufficient levels of L-Arginine from the diet, many people find the added security of an arginine supplement to be beneficial, particularly those who live active lifestyles.


Super strength L-Arginine capsules


Our super strength L- Arginine supplement 500mg is designed to support modern and active lifestyles, and is available in 2-piece EasyGest capsules, which can be taken whole or pulled apart and added to drinks. Each capsule is manufactured in the UK to strict Good Manufacturing Practice (GMP) approved standards of quality and this has become a best-selling amino acid supplement. 



 Nutritional InformationPer capsule
 L-Arginine HCL 605mg
500mg    -
 NRV = Nutrient Reference Value (previously referred to as RDA) 
 µg = Microgramme, mg = Milligram, IU = International Units


Other Ingredients: Magnesium Stearate, Gelatin, Titanium Dioxide.

A: Free from artificial additives and preservatives
Lactose free
Wheat free
Fish free
Gluten free
Yeast free



Take one to three capsules daily as a food supplement or as directed by a healthcare professional. Store in a cool dry place. Keep away from children at all times. Do not use if the seal is broken.



If you are taking any prescription medication, you have a medical condition or you have specific concerns about the suitability of any of our products in relation to these, you should always consult your GP or Pharmacist prior to taking supplements. Pregnant or lactating women should consult a GP before taking supplements. Do not exceed the recommended daily dosage. Keep out of reach of children. Supplements should not be taken as a substitute for a varied diet. Always read the label before use.




UK Mainland


STANDARD: FREE 2-3 day delivery for all online orders.

All orders dispatched to UK addresses will automatically qualify for FREE Standard 2-3 Day Delivery (excluding the day of despatch), regardless of order size. This means you won't be waiting long for your goods to arrive. Order before 12:00pm Monday-Friday to receive goods within 2-3 working days (excluding bank holidays). 


EXPRESS: FREE next-day delivery for orders over £40.

Place your order before 12.00pm Monday-Friday to receive your goods the next-working day (excluding bank holidays). For orders under £40 there is a small £3.50 charge for Express Next Day Delivery.



Europe & Rest of the World

For all European and International orders, delivery charges will vary depending on the total weight and size of the order. As you add products to your basket the delivery charge will automatically update. This service offers all our international customers fair and competitive delivery charges.


Terms & Conditions

Orders must be placed before 12.00pm Monday to Friday (excluding bank holidays) to qualify for our Express Next Day Delivery or Standard 2-3 Day Delivery. These services are currently available for UK addresses only and are subject to stock levels. If an item(s) is out of stock, it will be given priority delivery upon arrival.


Your Details
Review this product
  • 29th December 2015 - Fermin
    Q: Hi, I know that being on various prescribed medication must always consult with my GP before taking any supplements. My question is that I am a diagnosed diabetic type II, blood hypertension and a severe dilated atrium, taking this supplement would it not making my atrium gets worse? Apart for the possible bad interactions?

    Yours truly

    A: Unfortunately we wouldn't be able to comment on that. As we are not medically trained we cannot give any such advise, and we kindly ask that you check this with your GP or pharmacist who will be able to advise you further.
  • 11th September 2014 - Tril
    Q: L-Arginine 500mg-What is the capsule shell made of? Has it got any beef in it?
    A: Please be aware that the capsule does contain beef gelatin.
  • 25th November 2013 - Andy
    Q: Hi I was wondering if simply supplements would make a 1000mg l-arginine?
    A: We currently do not stock this strength however we will pass this on as a recommendation for future consideration. We review our list of products regularly and introduce new additions at least every month so keep your eyes on the lookout. Meanwhile, you may also want to try other products that contains L-Arginine such as VitaMen Plus and Prostaform Plus.
  • 23rd October 2013 - Malik Asgher
    Q: is there any side effect of this medicine?
    A: There are no known side effects associated with L-Arginine. However, if you are taking any prescription medications, we would advise that you consult with your GP before taking.
  • 5th July 2012 - Nathan
    Q: Does this product work in the same way as Viagra?

     L-Arginine is an amino acid, and is designed to naturally aid circulation and vascular health, helping to increase blood flow throughout the body and to the extremities. It does not work in the same way as viagra, as that is a prescription medicine rather than a supplement.

  • 22nd May 2012 - ariv
    Q: Could you please confirm that the gelatin extract from beef or any other meat as many Muslim concern got 'halal' (slaughtering all animals by Islamic method)one. If u could do that many Muslim can have this product. Can please assure this?

    We can confirm that all our gelatin based products are Halal friendly. 

  • 17th May 2012 - lorraine telford
    Q: if my husband is diabetic and his sugars had affected his health in his relationship with me can he still take these as he has got his sugars basically under control now . i think it would be better than having surgery as i dont like the sound of it or the fact that it might not work when this product has a lot of write up about it being successful . he has tried various types of viagra and it has not worked for him .

    We are not aware of any side effects or interactions, however as we are not medically trained we would advise that you consult your GP in regards to this.


  • 21st January 2012 - Salih
    Q: I found out that to treat ED person needs to take 5gr a day of L-Arginine this information can be found on Mayo clinics' web site as well as other internet sources.
    So I would like to know, why you are recommending much lower dose? (1.5gr a day)

    Our L-Arginine is 500mg strength, and we advise 1-3 capsules daily. As stated on our website, appropriate amounts for each individual are to be determined by a doctor.


  • 12th June 2011 - ariv
    Q: Could I take this along with another food supplement like 'Cod Liver Fish Oil' caps?

     As long as you are not exceeding the RDA of either product, there should be no problem in taking them together, If you do have any concerns, we would advise that you consult your GP.

  • 31st May 2011 - ariv
    Q: could you please explain how affect kidney or any other danger side affect please?
    A: We are not aware of any side effects associated with L-Arginine, however, if you have any medical concerns I would advise you to consult with your GP. As long as you are not taking any prescription medications that may interact with this product, it should not affect the kidneys.
  • 26th May 2011 - M Nightingale
    Q: Why have you stopped selling the tablet version of these? I'm a vegan and I used to buy them from you because they had no animal ingredients, but the capsule version contains gelatin, so is no longer suitable for me.

    Please accept our apologies for any inconvenience this has caused. Unfortunately, this product had to be reformulated due to an ingredient change.

    For a vegetarian alternative, you may want to consider our Super Strength Ginkgo Biloba 10,000mg supplement. Please click HERE to view. 

  • 6th May 2011 - NR
    Q: Can I take L-Arginine 500mg with CLA capsules (Ingredients - 1000mg
    Conjugated Linoleic Acid (80% active isomers), Gelatin, Glycerol, Water)? Are there any side effects if the two are taken together?

    They are two different products with different benefits. As long as you take within the recommended dailiy dosage then it will be safe. If you are unsure, we encourage that you give your GP a visit.



  • 9th August 2010 - jodie
    Q: Will this help with fetility? - i have been told ive got lazy ovaries and want to try natural remedies.

     Research does suggest that L-Arginine can increase fertility in women. In a double blind placebo controlled clinical study utilizing L-arginine, oral ingestion of L-Arginine increased fertility in women attempting to conceive after trying for 6 to 36 months. After the end of the clinical study utilizing L-Arginine, 33% of the women who failed to conceive actually became pregnant.

  • 22nd July 2010 - kace
    Q: is l-arginine suitable for both men and women please?

    L-Arginine is an amino acid that is suitable for both men and women.

  • 13th April 2010 - Sharon
    Q: Hi, Could you tell me if L-Arginine can be taken with my current prescription medicine, Amitriptyline? Thanks

    We must inform you that at Simply Supplements we are not medically trained and therefore we respectfully advise that if you are taking any prescription medication or you have specific concerns about the suitability of any of our supplements, you should consult your GP or Pharmacist

  • 13th November 2009 - J Nicholas
    Q: Can this product be taken with your Horny Goat Weed supplement?

    With regards to taking different supplements together, one on the many benefits of natural herbal medicines is the safety parameters when mixing several vitamins, minerals and nutrients. Nonetheless, whilst a majority of combinations are safe, we would advise that you consult your GP or Pharmacist with any specific instances, particularly in relation to a medical condition as the potency of herbs when mixing does differ.

  • 3rd October 2008 - brian frost
    Q: I take dosage of tablets for my epilepsy which is not serious now my tablets have been balanced but would these effect me in any way ?

    We must inform you that at Simply Supplements we are not medically trained and therefore we respectfully advise that if you are taking any prescription medication or you have specific concerns about the suitability of any of our supplements, you should consult your GP or Pharmacist.

Your Details
Your Question

Product reviews

Please Note: The views expressed below are those of Simply Supplements customers. Simply Supplements does not endorse these views, nor should they be regarded as medical advice.

  • Reviewed on 20th Oct 2013
    Heard great things
    paul , gloucester
    I'd heard great things about this product in that it acts on the blood vessels to help promote blood flow. Something that obviously the sexual arousal process needs. Anyhow, I bought some of this stuff and after about 1-2 weeks I noticed a massive change. This product has literally changed my life for the better and I want everyone to know out there, if you're suffering similar things to what I was, buy this. You will not regret it. It's worth every penny and has been the best supplement I have ever bought. Fantastic product. Glad I found it. Just buy it !!
  • Reviewed on 27th Nov 2012
    Stuart Cork , Oldham
    Whilst reading your info on L-arginine I came across a paragraph regarding increased production in muscles of nitric oxide and also helping improve measures of strength and short-term power performance. I have been bodybuilding for years and tried to do it without the aid of supplements but I since been using this and I wish I started years ago.
  • Reviewed on 20th Aug 2012
    Help in the bedroom
    Paul Doughty , Ashington
    I decided to give this product a try and it has worked wonders, its such a relief not to have to worry about certain things anymore and it has also made my wife a very happy women too
  • Reviewed on 5th Jul 2012
    Good Product
    Mr James Rylatt , Cowdenbeath
    I am very satisfied with this product & I definately recommend it (has proven to be very useful) ;). I do unfortunatly have a disappointing side to my review, the delivery time overlapsed by a couple of days, but that is my only concern! you will be hearing from me again in the future!
  • Reviewed on 12th Mar 2012
    No longer frustrated
    Malcolm Grint , St Helens
    My wife and I went through a long period of time where we were unable to make love with one another and became very frustrating for us both. It had been a long-standing problem but was finally resolved when i began to take this supplement which I was unaware of until a friend mentioned it to me. The results are fantastic and I continue to use it all the time.
  • Reviewed on 10th Feb 2012
    Dysfunctional - Not Anymore :)
    John Brown , Marlow
    Using this alongside Ginkgo Biloba has greatly improved my sex life. I had a lot of trouble with erectile dysfunction and caused many problems both mentally and physically. Been taking for sometime now and am now a very happy man.
  • Reviewed on 3rd Jan 2012
    Jennifer Bradbury , Crawley
    I have never had so much fun, my husband who now takes these is a different man, he had so many problems before and since taking these things have changed for the better, better for me aswell
  • Reviewed on 1st Sep 2011
    This helps me with my relationship and my life!
    Cyril Baker , Marsden
      I am praising this product as I have been taking this for some time now and I must say that the  results that I hoped for have happened. I can carry on my life within  my personal relationship with my partner with absolute confidence and  of course without the worry of any harmful side effects. I am so glad I discovered your product  
  • Reviewed on 30th Aug 2011
    Help with my weight training and great value for money!
    Mark Jackson , HULL
    I purchase l’arginine, cod liver oil , and glucosamine tablets from yourselves. I weight train regularly and these products I find support my energy and joint pain requirements. I purchase from simply because it is a good product and in my opinion, value for money,  
  • Reviewed on 12th Dec 2008
    A much more Pleasurable Experience ;)
    Sandeep , London
    Ever since I started taking L-arginine recommended by my mate vince, its been amazing, I always had a hard tiime getting an erection but all of a sudden since I started taking this my erctile problems are behind me and intercourse is a much more pleasurable experience. I recommend 1000mg.
  • Reviewed on 20th Apr 2007
    Successful Sexual Product :)
    David William Perry , Twickenham
    I have had success with your L-arginine sexual product. I cant tell you in too much detail but I'm sure you understand what I am talking about. It took some time to take effect but I have to admit it has had a pretty high success rate since. Good Stuff. We are both grateful. 
  • Reviewed on 26th Jan 2007
    Found you through Google
    Mr W Smith , Ormskirk
    Dear all I discovered this product via Google and have been trying it for the last 3 months. I can say this product is very effective in its usage. I would recommend this product to other people. My wife also agrees it has been a massive help in every department. Thanks Mr Smith
with your L-Arginine 500mg
  • Amino acid for muscle maintenance
  • Supports prolonged workouts
Only £8.49