L-Arginine - ProteinCo
L-Arginine - ProteinCo
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Load image into Gallery viewer, L-Arginine - ProteinCo

Regular price $29.95 Sale price $29.95

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  • Potency: 750 mg Arginine per capsule
  • Premium grade L-Arginine
  • Easy to use capsule form
  • Best for use BEFORE workouts
  • 120 or 250 servings per container
  • Nutrient transporter that increases value of other supplements


  • Promotes positive nitrogen balance
  • Improves levels of growth hormone – HGH
  • Enhanced glutamine levels in the body
  • Responsible for the synthesis of nitric oxide (NO)
  • May reduce healing time of injuries
  • Helps decrease blood pressure

Each capsule of the ProteinCo’s Arginine contains 100% L-Arginine. It's the ideal supplement to use post exercise to increase nitric oxide (NO2) production giving you the “pump” you need to crush your workout. The benefits are most profound in nearly eliminating warm up time, meaning you can workout harder and longer to gain maximum benefit from your time in the gym.

Increasing nitric oxide production will vasodilate blood vessels (increasing internal diameter to increase blood flow) resulting in more oxygen, and more nutrients being sent to your muscles. Not only does this equate to improving the quality of your workouts, it means you reap the benefits long after your workout is complete.

Note: Nitric Oxide is a gas whose organic makeup would be annotated as NO. Many supplement companies have adopted an industry standard way of listing it as NO2, which in reality is nitrogen dioxide, a completely different compound. For those with a scientific background, rest assured, we know the difference. To maintain the industry standard and not be confused with the word “no”, ProteinCo will stick with NO2 as our acronym for nitric oxide.



Who should supplement with L-Arginine?

Anyone looking to get the most out of a workout should consider using our L-Arginine supplement. By increasing nitric oxide production, you will be able to get to your maximum reps and weight faster. If you notice it takes you longer to warmup than those around you, or longer than it used to take, this is an essential supplement for you.

As we age, many factors contribute to our bodies taking longer to warm up. Older athletes and active people should experience an even more noticeable affect when supplementing with L-Arginine.


Our bodies are complicated machines. Examples of physiological processes include hormone regulation and production, toxic waste removal from our bodies, increasing defense mechanisms for our immune system and growth hormone output to name just a few. For athletes in particular, boosting your immune system will allow you to train harder protecting against injury and over training.

Some benefits of taking an L-Arginine Supplement

Arginine supplements have become popular for their nitric oxide producing ability and as an anti oxidant, scavenging free radicals. It can also assist with the release of human growth hormones (HGH), enhancing fat metabolism, and boosting your good cholesterol (HDL).

Arginine also assists with regulating sodium levels in your body. Bodybuilders understand that retaining water under the skin can make your muscles appear smooth, over saturated and less defined.

Science has shown that Arginine has nitrogen retaining abilities. Therefore it's a crucial nutrient for muscle growth due to its role in protein synthesis, bringing more fuel to your muscles when they need them most for mass increases and definition.


When you are injured, arginine demand in your body increases. Many times you can't eat or don't want to eat as much during the down time after you suffer an injury. Using ProteinCo's Arginine during this period may greatly improve the speed of your recovery. It can also benefit your sex life if you suffer from erectile dysfunction (ED) for example, due to the vasodilating properties once again. Blood vessel diameter should increase with arginine use, facilitating increased blood flow to areas that are constricted and deprived of oxygen.



With so many benefits of increasing your intake of arginine, you can't help but improve nearly all aspects of your health in general.

Gain Weight – More blood flow means more nutrients to muscles

It makes sense that increasing blood flow would carry more nutrients to all areas of your body. Due to the fact that arginine does assist with vasodilation of blood vessels, you transport nutrients not only to your muscles but to your entire body. The benefit to those looking to increase overall body mass is direct support for your training and nutrition intake to assist with gaining weight when that is your precise goal.

Lean Muscle – Enhanced fat metabolism means leaner muscles

Coupled with a low fat diet and targeted training, the fact that arginine assists your body in burning fat calories means your muscles will be leaner.

Lose Fat – Managing body fat stores for you

Again, the increased fat metabolism benefits of L-Arginine will assist you with losing unwanted body fat throughout your body.

Fitness – Strength, speed and endurance

Transporting all the nutrients from your foods and supplements to the right areas of your body, means every aspect of your overall fitness benefits. As well, consuming supplements that assist with delivery of all these key nutrients, expands the benefits of every other nutrient you ingest on a daily basis.

Active Lifestyle – Brain function, sexual health, and well being

Enhanced brain function comes from feeding ourselves proper nutrients for that purpose, especially as we age. Nitric oxide is suspected as the neurotransmitter that is primarily responsible for converting short-term memories to long-term memories. It's something that typically declines with age. Again, increased blood flow can assist with improving sexual function by delivering more oxygen to restricted blood flow areas. Those two reasons alone make L-Arginine supplementation worth the possible contributions to your health, mind and body’s wellbeing.

Nutritional Info

INGREDIENTS (per capsule)

L-Arginine .............................. 750mg


These statements have not been evaluated by Health Canada. This product is not intended to diagnose, treat, cure or prevent any disease. The information you find at ProteinCo is NOT a substitute for medical advice. ALWAYS consult your doctor or pharmacist. Do not use any dietary supplement as a replacement for conventional care, or as a reason to postpone seeing a doctor about a medical problem. Tell all your health care providers about any complementary and alternative practices you use. Give them a full picture of what you do to manage your health. This will help ensure coordinated and safe care.

Allergies and Aversions

If you have allergies to nuts, shellfish or other such serious food allergies, check the label carefully to make sure you see your particular allergen listed as being absent. We use a table to show you what is or isn’t in each product so you can decide whether it suits you regarding allergies, afflictions, lifestyle choice, etc.

We list the most common substances that pose allergy risks or that may contain an ingredient people like Vegetarians/Vegans choose not to consume. Near the supplement facts for each product, you will see the following table with Y or N showing that either Yes, this product contains this or No it doesn’t:

Product Gluten Nuts Soy Fish Animal Dairy Vegan
L-Arginine N N N N Y N N

Also, be sure to look at Ingredients or Other Ingredients. Substances such as Artificial Color and Flavor, Sucralose and others that aren’t in the table may be something you choose to avoid for personal reasons. If you are in doubt about whether or not our product contains an ingredient you are adverse to or that may be manufactured in a plant that does, contact ProteinCo before purchasing or consuming the product.


Assume our products AREN’T vegetarian and/or vegan unless we specifically state they are. It’s always best to verify a product meets your specific requirements before you purchase them.


Q - Can't I just take Nitric Oxide (NO2) I see listed on other websites?

A – If you look at the ingredient list for products that list Nitric Oxide as the main ingredient, you won't see nitric oxide listed. That's because nitric oxide is a gas and the only way we know of for getting it directly is by going to the hospital. Remember, the only nutrient that makes nitric oxide in your body is arginine.

Q – Is it possible other nutrients enhance nitric oxide production?

A – That is possible but not supported by adequate research findings for us to combine our L-Arginine with other nutrients at this time. Trying to figure out the complexities of the human body is only worth so much effort. With that said, new research does back a change in thinking once in awhile. We aren't opposed to reformulating products in the future should the science support it.


Q – What is L-Arginine anyway?

A – It's the L form of Arginine and it's one of the 20 most common natural amino acids. It's classified as a non-essential amino acid which means your body can and does produce it. Depending on the situation, it can be considered semi essential meaning you should supplement it directly. Burn victims, those suffering from major trauma and athletes are examples of people who can benefit from additional L-Arginine.

Suggested Use

Serving Size

2 capsules = 1500 grams


Taking L-Arginine on an empty stomach is critical to assure you are getting the results you desire. Consume at least 3 hours after your last meal for best results.

Cycle On and Off

L-Arginine is most effective by not taking it continuously. Alternating your usage on a 4 weeks on and 2 weeks off cycle will likely give you superior results.


It's possible to increase the benefits you experience by combining use with our Creatine Monohydrate, BCAA Powder or BCAA Capsules. Experiment by adding one additional product at a time until you dial it in for the maximum results for you personally.


BEFORE – Pre Workout

Our L-Arginine supplement is strictly designed as a before workout product. Use as directed for maximum workout results. This doesn't mean you can experiment with taking it at other times of the day. Just be sure you don't consume more than 3 grams (3000mg) per day which would be 4 capsules.

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