In This Review
Overview
The older you get, you may start to feel tired more often. You may notice that you can no longer perform as before either in the bedroom, at the gym, or at work.
When this happens you need to look for ways to have more energy and feel better. This is when many start to look for supplements that promise to help with strength, energy, and endurance.
Natrol L-Arginine 5000 mg falls in this supplement class. It claims to help men improve energy, support sexual health, and keep blood flowing well throughout the body. But can it truly do all of this?
This review will take a closer look at Natrol L-Arginine 5000 mg, its ingredients, how it works, and what other users have to say about it.
Keep reading to see if this supplement is as effective as it wants people to believe.
What is Natrol L-Arginine 5000 mg?
Natrol L-Arginine 5000 mg is a dietary supplement for men. It is said to help with energy, blood flow, and overall health. The tablets are drug-free, so you don’t need a prescription to use them.
This supplement is meant for men who want more energy or better performance in their daily lives. The product is non-GMO, gluten-free, and free from artificial flavors, sweeteners, and preservatives. It is also said to be free from common allergens like milk, egg, wheat, soy, and nuts.
While it claims to be a simple way to enhance health, does it deliver on these promises? Let’s take a closer look.
How Does Natrol L-Arginine 5000 mg Rate According to Our Experts?
Natrol L-Arginine 5000 mg earns 3.5 out of 5 stars. It includes L-arginine and B vitamins, which may support energy and circulation. The cost is on the high side seeing that a full bottle will last only 18 days. The 45-day money-back guarantee adds some assurance, but concerns about tablet quality and inconsistent effectiveness are making people skeptical.

Brand Highlights
- Claims to use high-quality ingredients in their formulations.
- Products are labeled as 100% drug-free.
- Committed to creating supplements designed for specific health needs.
- Provides clear allergen information for consumer safety.
- Established as a trusted name in the health and wellness industry.
Key Ingredients
- L-Arginine
- Vitamin B6
- Folate (Folic Acid)
- Vitamin B12
Pros
- Contains 5,000mg of L-Arginine per serving.
- Includes B vitamins essential for energy production.
- Backed by a 45-day money-back guarantee.
Cons
- Requires five tablets per serving, which may be inconvenient for most.
- Lots of users complain about tablets crumbling into dust.
- A bottle of 90 tablets will only last 18 days.
- Not suitable for individuals under 18 or pregnant/nursing women.
- There is no clear information on third-party testing or certifications.
- Results may vary and are not guaranteed.
About the Brand
Natrol LLC is a U.S.-based company that makes health supplements, including Natrol L-Arginine 5000 mg. It claims to focus on creating drug-free products and using allergen-free ingredients to suit a variety of customers.
Natrol products are easily found online and in stores. They offer a 45-day money-back guarantee but don’t mention third-party testing or clinical trials, which might make some people unsure about the quality.
How Does Natrol L-Arginine 5000 mg Work?
Natrol L-Arginine 5000 mg helps your body improve blood flow and energy levels. L-arginine is an amino acid that helps your body make nitric oxide, which relaxes blood vessels and improves circulation. Studies by Informed Health in the National Library of Medicine show better blood flow means your muscles and other body parts get the needed oxygen and nutrients.
The B vitamins in the supplement help your body turn food into energy, supporting stamina and health. Together, these ingredients aim to help with energy, circulation, and sexual health, though results may vary for each person.
Natrol L-Arginine 5000 mg Ingredients – Are they Safe and Effective?
Here are the key ingredients in Natrol L-Arginine 5000 mg and their benefits:
L-Arginine
L-arginine is an amino acid that helps the body produce nitric oxide. As documented in our WOWMD L-Arginine Plus Review (another supplement containing this ingredient), nitric oxide relaxes blood vessels and improves blood flow. Improved circulation supports energy, vascular health, and sexual performance.
Research in the Journal of F1000 Research highlights its role in enhancing blood flow and reducing vascular stiffness. This makes it a popular choice in supplements to promote heart and vascular health.
Dr. Naseh Pahlavani, a researcher in Mashhad University of Medical Sciences highlights, “There have been no studies about the effect of L-arginine on CVD risk factors.”
Vitamin B6
Vitamin B6 (Pyridoxine Hydrochloride) supports the body’s energy production by helping convert food into fuel. Our WOWMD B-12 Complex Liquid Review shows it also plays a role in brain health and mood regulation. A study published in the International Journal of Medical Sciences emphasized its importance in energy metabolism and its potential benefits for reducing fatigue.
Folate (Folic Acid)
Folate is a B vitamin essential for producing red blood cells and supporting heart health. It helps maintain proper blood flow and is often included in supplements for its cardiovascular benefits. Research in the American Journal of Clinical Nutrition shows folate can support healthy blood pressure levels.
Vitamin B12
Vitamin B12 (Cyanocobalamin) helps maintain nerve health and aids in energy production. It is vital for supporting the body’s energy levels and reducing fatigue.
Research published in the Statpearls highlights the role of Vitamin B12 in preventing deficiencies that can cause serious health problems. A lack of Vitamin B12 may result in anemia, fatigue, muscle weakness, and difficulty with memory or focus.
How to Use Natrol L-Arginine 5000 mg?
Here’s how to use Natrol L-Arginine 5000 mg:
- Take five tablets daily with a meal.
- Do not exceed the recommended dose.
Be sure to store it in a cool dry place. Also, this is a male health supplement and it’s generally not for use for individuals below the age of 18 and for women.
Benefits of Natrol L-Arginine 5000 mg
Here are some of the benefits of Natrol L-Arginine 5000 mg as claimed by Natrol:
- Supports Stamina and Performance: The manufacturer claims this supplement helps boost energy levels, potentially allowing users to maintain better endurance during daily activities or physical activities.
- Promotes Sexual Health: Natrol states that the product supports healthy blood flow, which they suggest may improve sexual wellness and performance for men seeking natural solutions.
- Improves Vascular Health: According to the company, the supplement promotes circulation by helping blood vessels relax, which supports overall cardiovascular function.
- Enhances Energy Production: With B vitamins included, the manufacturer claims the product helps the body convert food into energy, assisting with reducing fatigue.
Safety of Natrol L-Arginine 5000 mg
When taken as directed, Natrol L-Arginine 5000 mg is generally considered safe for most adults. The product is made with drug-free ingredients and includes clear allergen information, making it suitable for individuals with common allergies.
However, the company advises f you are pregnant, nursing, under 18, or have any medical condition.
Side Effects of Natrol L-Arginine 5000 mg
Natrol L-Arginine 5000 mg is generally safe for most users, but some might experience mild side effects. These could include:
- Temporary stomach discomfort if taken on an empty stomach.
- Mild nausea or bloating as the body adjusts.
- Headache or dizziness in sensitive individuals.
Natrol L-Arginine 5000 mg Price
Natrol L-Arginine 5000 mg prices vary by seller. Here’s the Amazon pricing:
- Single Bottle (90 Tablets): $12.91 (discounted from $19.29).
- Subscribe & Save Option: You can save 5% on the first order and up to 15% on repeat deliveries.
Prices may differ across authorized sellers like Amazon, Walmart, Target, and Walgreens. Always buy from trusted sources to ensure authenticity.
Natrol L-Arginine 5000 mg Review – FAQs
Q: What is Natrol L-Arginine 5000 mg used for?
A: Natrol L-Arginine 5000 mg is a dietary supplement that supports stamina, energy, and vascular health. It is also marketed to promote healthy blood flow, which may enhance physical performance and sexual health in men.
Q: How do I take Natrol L-Arginine 5000 mg?
A: The recommended dosage is five tablets daily, taken with a meal. Follow the dosage instructions carefully and consult a healthcare professional if you have any concerns or health conditions.
Q: Is Natrol L-Arginine safe?
A: Natrol L-Arginine is generally safe when used as directed. However, people under 18, pregnant or nursing women, and those with medical conditions should consult a doctor before use. Always follow the recommended dosage to avoid side effects.
Q: Are there any side effects?
A: Some users may experience mild side effects like stomach discomfort, nausea, or bloating, especially if taken on an empty stomach. If side effects persist, discontinue use and consult a healthcare provider.
Q: Does it come with a money-back guarantee?
A: Yes, Natrol offers a 45-day money-back guarantee. However, this applies only to purchases made from authorized sellers. Be sure to check the seller’s policy.
Q: Where can I buy Natrol L-Arginine 5000 mg?
A: The product is available at major retailers such as Walmart, Target, Walgreens, Instacart, and Amazon. However, prices may vary, so buying from authorized sellers for authenticity and warranty coverage is recommended.
Natrol L-Arginine 5000 mg Customer Reviews
Customer reviews for Natrol L-Arginine 5000 mg highlight significant concerns regarding product quality and effectiveness:
James rated the product 5 stars and said,
I always buy this one never disappointed me.
Bonny McLaughlin rated the product 1 star saying that it’s poor quality. In his words,
The last two bottles I bought of this product have crumbled into powder. The first time I thought it must have been a bad batch and threw it away. The second bottle is the same: as soon as I put it into the weekly pill container, it crumbles. Something is wrong with this substance.
JDM rated the product 1 star saying he’s starting to get disappointed. In his words,
These were great. But as I travel I started noticing they seem to absorb moisture and begin to come apart. Probably gonna get through this bottle and start looking for another brand.
There are lots of complaints about the tablets turning into powder. Several customers seemed to face this and hence could not use it.
Natrol L-Arginine 5000 mg Review – Conclusion
Natrol L-arginine 5000 mg has potential benefits for supporting blood flow and energy, but it also has notable drawbacks. Many customers reported issues with the tablets crumbling and not working as expected.
The requirement to take five tablets daily may also be inconvenient for some. Plus a 90-tablet bottle will only last users 18 days. This makes the product more expensive than one would think.
While they have a 45-day money-back guarantee, the negative feedback on quality and customer service makes it hard to recommend.
If you’re looking for a more straightforward option with better reviews, consider exploring other products that are better formulated, require fewer daily tablets, and have more reliable customer feedback.
Below you'll find some of the most effective l-arginine supplements on the market today, in our opinion.
Verdict on Claimed Benefits: Below is our summary of the available evidence for the claimed benefits of below mentioned l-arginine supplements based on the available research:

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