HumanN Neo40 Review - For Increased Muscle Strength And Performance Nitric Oxide Updated July, 2020
Final Thoughts

Overall Score 61%

HumanN Neo40 Review

Manufacturer’s Claim

This is a review of the nitric oxide product called Neo40. Nitric oxide supplements are not actually made from nitric oxide, rather they contain ingredients that allow your body to produce nitric oxide which is beneficial for different functions. This product claims to improve heart health, maintain healthy blood pressure levels, and enhance circulation. The manufacturer states that this product is backed by clinical trials which showed results after just one month.


L-Citrulline is an amino acid that is key for the production of nitric oxide. Nitric oxide allows the blood vessels to dilate which improves blood flow. This enhanced circulation enables oxygen and nutrients to be carried more efficiently to the body. This is what makes this a great supplement for those looking to build muscle. The dilation of the blood vessels also helps to reduce blood pressure. This product is missing an important ingredient for nitric oxide production, L-Arginine. The nitric oxide blend also does not allow us to see how much of each ingredient is included in the product. The concentration of L-Citrulline may actually be too low to produce results.


The recommended dosage is one tablet a day. You should not swallow this tablet, rather let it dissolve completely on your tongue. The manufacturer states that you can take two tablets a day during the 30-45 day restoration loading phase, but it is not clear what this is. You should not take more than two tablets in a 24-hour period.


One box of Neo40 contains 30 tablets. The manufacturer offers special deals for this product which you can buy online from their website. One box will cost you $59.95 plus $8.95 for shipping. You can also buy a package of three boxes for $99.90. This package comes with free shipping plus two nitric oxide indicator strips which show the levels of nitric oxide in your body. A package with six bottles will cost $179.90 and it also comes with free shipping and five indictor strips.

Possible Side Effects

The manufacturer has not mentioned any side effects with this product. As with all supplements, pregnant and nursing women, and anyone with an underlying medical condition should consult a doctor before using this supplement.


HumanN offers a 90-day money-back guarantee. They state that if you are not happy with the product, you can return it for a full refund, minus any shipping fees. The manufacturer does not state what condition the bottles have to be in to be eligible for a refund.

HumanN Neo40 Review – The Bottom Line

This product seems to be a decent product that comes with good purchasing options and a money-back guarantee. However, the ingredients are one downside of this product. The blend of ingredients does not allow you to see how much of each ingredient is found in the supplement. If the quantity is too low, this may affect the efficacy. This product is also missing the essential ingredient L-Arginine. Overall, we think there are better alternatives on the market.

Reviewed & delivered by our panel of experts at Reviewy.