There are ultimately two main reasons why men look at Umzu Redwood, blood pressure and blood flow for erectile purposes, and unfortunately Umzu is not the best option for either of these issues.

Now, that's not to say it's a completely useless supplement, but if you're looking for something to promote healthy blood flow in general then you're probably going to want something with beets (which are more well backed to boost blood flow than any ingredient in Umzu), a function dose off Leucine, which needs to be grams, not the 75mg in Umzu redwood, and Q10.

If you're looking for something to specifically help with normal blood flow to your nether regions, which is of course one of the main reasons that people look to support nitric oxide production aside from to enhance physical performance in general, then you're going to want something with maca, which is functionally more effective (and far more well backed by studies) when it comes giving you more stamina and an optimal circulation to the genitals than anything in Umzu Redwood.

I'll get onto recommendations shortly, but this it the bit where I try to find something nice to say about Umzu Redwood. And first off it's cheaper than the better nitric oxide boosters, and it is actually possible that the horse chestnut extract is correctly dosed, and maybe the garlic. Although as Umzu doesn't list it's standardization for the extracts acillin and aescin respectively we can't actually be certain. None of the other ingredients are in dosages high enough to do anything to regulate blood pressure, but seeing as a lot of the customer reviews of Umzu seem to be positive I'll give them the benefit of the doubt and assume that at least one of those two extracts is in a functional dose.

So, what would I recommend instead, Prime Male enhance if you're looking for a better circulation for erections and HeartBeets if you're looking for a general blood pressure supplement. They both actually use optimal dosages and both contain better ingredients for circulatory support in general.

Umzu Redwood Formula

  1. Vitamin C (Ascorbic Acid)

    • Amount: 600 mg per serving
    • Optimal Dosage: The recommended dietary allowance (RDA) for adults is 65-90 mg per day, but higher doses (up to 2,000 mg) are considered safe and beneficial for enhancing nitric oxide production and reducing oxidative stress.
    • Analysis: 600 mg is a substantial dose, supporting antioxidant activity and nitric oxide synthesis.
  2. Casein

    • Amount: 125 mg per serving
    • Optimal Dosage: The dosage is 40grams....
    • Analysis: 125mg will do nothing.
  3. Garlic Bulb Extract (Allium sativum)

    • Amount: 300 mg per serving
    • Optimal Dosage: Studies have used dosages ranging from 900 to 1,200 mg of garlic powder or equivalent extract per day to achieve cardiovascular benefits.
    • Analysis: 300 mg per serving is at the lower end of the effective range but could offer some minor benefits in improving blood flow and reducing blood pressure.
  4. Horse Chestnut Seed Extract (Aesculus hippocastanum)

    • Amount: 250 mg per serving
    • Optimal Dosage: Effective doses typically range from 300 to 600 mg of standardized extract per day, providing about 50-75 mg of aescin.
    • Analysis: 250 mg per serving of is not going to cut it and we have no evidence it's standardized.
  5. Pine Bark Extract (Pinus pinaster)

    • Amount: 100 mg per serving
    • Optimal Dosage: Effective doses range from 100 to 200 mg per day, with some studies using up to 300 mg.
    • Analysis: 100 mg per serving is at the lower end of the effective range but should still provide antioxidant and vascular benefits.
  6. L-Leucine

    • Amount: 100 mg per serving
    • Optimal Dosage: L-Leucine is typically dosed in grams (e.g., 2-5 grams) to effectively support muscle protein synthesis.
    • Analysis: 100 mg per serving (200 mg daily) is significantly below the optimal range for muscle protein synthesis and wont do anything.

Pros and Cons


  • Improves blood flow and circulation due to a blend of ingredients enhancing nitric oxide production and supporting vascular health.
  • Utilizes natural extracts and vitamins, generally safer with fewer side effects compared to synthetic alternatives.
  • Contains antioxidants like vitamin C and pine bark extract that help reduce oxidative stress and inflammation.
  • Cheap price point


  • L-Leucine is under-dosed at 100 mg per serving, significantly lower than the effective range for muscle protein synthesis.
  • Some ingredients are at the lower end of their effective dosage range, potentially limiting their full benefits.

Best Alternatives To Umzu Redwood

Prime Male Enhance

Prime Male Enhance, formulated with maca, ginseng, tribulus, selenium, oat straw, and muira puama, offers a compelling blend of ingredients known for their potential benefits in supporting erectile function and overall sexual health so if this is what you're after it's going to be a better option than Umzu. Maca and Ginseng are renowned for their adaptogenic properties, helping to balance hormones and alleviate stress, which can contribute to improved sexual function and stamina. Maca, specifically, has been traditionally used to enhance libido and improve erectile quality and has been shown to increase blood flow specifically to the penile region in multiple double blind clinical trials. It's really the gold standard for this kind of use. 



While UMZU Redwood focuses on enhancing nitric oxide through ingredients like vitamin C, pine bark extract, and horse chestnut seed extract, HeartBeets offers a far more extensive array of ingredients specifically tailored to promote nitric oxide production and support overall cardiovascular health. And the actual correct doses of some of the shared ingredients like garlic extract by actually standardizing for the correct compound (companies typically like to actually put that on the label if they can, and unlike Umzu, they can). They cover off far more relevant vitamins Vitamin C (250mg), Magnesium (200mg), B6 (1.3mg), B2 (1.1mg), Folate (2,500mcg). And Q10 meaning they beat out Umzu Redwood there too.

Then there’s the inclusion of beet extract, which of course is what you’re looking for in an NO2 booster, along with additional cardiovascular-supporting nutrients like ginger, olive leaf and green tea, makes it a potentially more effective choice for individuals seeking enhanced blood flow and cardiovascular function. Oh and it’s got a money back guarantee. Not really much of a contest. And yes it will still help with erections.


Umzu Redwood Review Conclusion

UMZU Redwood focuses primarily on supporting nitric oxide production and cardiovascular health, but simply isn’t up to standard against the best on the market options for it’s use cases. 

It doesn’t offer the same targeted benefits for sexual enhancement or comprehensive cardiovascular support as Prime Male Enhance and HeartBeets respectively. Meaning that quite simply I can’t recommend Umzu. 

It’s not a terrible product, and it’s at a reasonable price point, but you can get far more well rounded, high quality formulations for $10 a month more, and as a result it Umzu Redwood gets a no from me.     

Blood Flow Vit C, Garlic 2/5
Blood Pressure Garlic, Pine 2/5
Value Average 3/5
Customer Satisfaction Good 4/5