Red Boost is a natural dietary supplement in powder form, so there are no capsules to swallow. You mix it into water
and drink it. The formula targets blood circulation from several angles at once:
nitric oxide, the smooth muscle lining your blood vessels, hormones, oxidative stress and gut absorption.
Here's what each ingredient does.
Icariin (Horny Goat Weed Extract)
Primary role: Supports nitric oxide signaling and smooth muscle relaxation for healthy blood flow.
Traditional Use and Modern Research
Horny goat weed (Epimedium) has been used in traditional Chinese herbal practice for centuries to support
male vitality and stamina. Icariin is the flavonoid scientists identified as its most active compound,
and it's the reason this plant keeps drawing modern research interest.
Mechanism of Action for Blood Flow
In laboratory studies, icariin has been shown to mildly inhibit PDE5, the enzyme that breaks down cGMP.
cGMP is the messenger that tells smooth muscle in blood vessel walls to relax. When it lasts longer,
vessels stay relaxed longer, and that supports healthy blood flow.
- Supports the nitric oxide → cGMP pathway
- Helps smooth muscle in blood vessel walls relax
- A natural ingredient, not a prescription drug
Clinical Study References
Most icariin research so far has been done in the lab and in animals. For example, a 2008 study in the
Journal of Natural Products examined icariin's effect on PDE5, and animal studies have looked at
its effect on circulation-related function. Large human trials are still limited, so Red Boost pairs
icariin with ingredients that have stronger human data, such as citrulline.
Tongkat Ali (Eurycoma Longifolia)
Primary role: Supports healthy testosterone levels, stress resilience, energy and stamina.
Hormonal Balance Support
Tongkat Ali is a root native to Southeast Asia, where it has long been valued as a men's tonic. Its
main appeal today is its support for healthy testosterone. Testosterone naturally declines with age
and stress, and that decline can show up as lower drive, lower motivation and slower recovery.
Energy and Stamina Enhancement
Tongkat Ali works with your body's own hormone system and contains no caffeine. It isn't a quick hit like an energy drink,
so you don't get the crash that follows a can of Red Bull. Men who take it consistently often describe
steadier drive and better endurance in training.
- May help support healthy testosterone levels
- May help the body handle everyday stress (cortisol)
- Supports stamina without stimulants
Research Evidence
Human research on Tongkat Ali is encouraging. A 2013 study in the Journal of the International
Society of Sports Nutrition gave moderately stressed adults 200 mg a day for four weeks and
reported better stress-hormone profiles and higher testosterone status. A 2014 trial in
Phytotherapy Research reported improved testosterone and muscle strength in active older men.
A 2021 systematic review in Nutrients concluded that Tongkat Ali may support testosterone in men.
Fenugreek (Trigonella Foenum-Graecum)
Primary role: Supports libido, healthy testosterone and healthy blood sugar levels.
Metabolic and Circulatory Benefits
Fenugreek seeds are rich in soluble fiber (galactomannan) and saponins. Research has linked fenugreek
to support for healthy blood sugar levels. Healthy blood sugar matters for your blood vessels too,
because high blood sugar over time puts stress on the lining of blood vessels.
Testosterone Support Research
In a 2011 study in Phytotherapy Research, men taking 600 mg a day of a standardized fenugreek extract
reported improvements in libido. A 2016 study in The Aging Male reported better free testosterone and
sexual function in aging men using the same amount.
- Supports libido and male drive
- May help maintain healthy testosterone
- Supports healthy glucose metabolism
Dosage and Bioavailability
Most human studies use 500–600 mg a day of a concentrated seed extract. Extracts are used because the
active saponins are more concentrated and consistent than in the raw seed. Red Boost uses fenugreek
as part of a blend, so check the Supplement Facts panel for the exact amount in your jar.
L-Citrulline and Citrulline DL-Malate
Primary role: Supports nitric oxide production, blood vessel dilation and exercise performance.
Nitric Oxide Production Pathway
Citrulline is at the center of the Red Boost formula. Your kidneys turn L-citrulline into L-arginine,
which your blood vessels then use to make nitric oxide. Taking citrulline raises arginine levels in the blood
more effectively than taking arginine itself, because arginine is largely broken down in the gut
before it gets there (British Journal of Clinical Pharmacology, 2008).
Blood Vessel Dilation Mechanism
Nitric oxide signals the smooth muscle around your arteries to relax. The vessel widens, and more
oxygen- and nutrient-rich blood reaches your muscles and tissues. A 2011 study in Urology
found that 1.5 g a day of oral L-citrulline improved erection hardness in men with mild concerns.
- Raises the building blocks for nitric oxide
- Supports healthy blood vessel dilation
- Helps improve blood flow to working muscles
Optimal Dosage for Athletic Performance
For training, citrulline malate is typically studied at 6–8 g before exercise. In one study
(Journal of Strength and Conditioning Research, 2010), this produced more repetitions and less
next-day soreness. For daily circulation support, studies have used smaller amounts, from about 1.5 to 3 g a day.
Combining the two forms supports both daily blood flow and endurance.
Nettle Root Extract (Urtica Dioica)
Primary role: Supports prostate health, free testosterone and a healthy inflammatory response.
Prostate Health Connection
Nettle root is one of the most widely studied botanicals for prostate health. In a 2005 trial of 558
men published in the Journal of Herbal Pharmacotherapy, nettle root improved urinary comfort
compared with placebo. For men over 40, that's comfort you notice in everyday life.
Hormone Regulation Properties
Compounds in nettle root, known as lignans, have been shown in the lab to bind SHBG (sex hormone-binding
globulin). SHBG normally binds up testosterone. With less of it free to bind, more of your testosterone
may stay active. That's why nettle root pairs well with Tongkat Ali and fenugreek.
Anti-Inflammatory Benefits
Nettle root also supports a healthy inflammatory response. Chronic, low-grade inflammation is hard
on blood vessels, so keeping it in check helps protect circulation over the long term.
- Supports prostate health and urinary comfort
- May help keep more testosterone active
- Supports a healthy inflammatory response
Maca Root Powder
Primary role: Supports energy, libido and overall nutrition.
Traditional Peruvian Use
Maca grows high in the Peruvian Andes, above 4,000 meters, where few crops survive. Andean communities
have eaten it for generations as a food for strength and stamina. Today it's sold worldwide
as a superfood.
Energy and Libido Support
A 2002 study in Andrologia found that men taking 1.5–3 g of maca a day for 12 weeks reported improved
sexual desire, without changes to their testosterone levels. So maca supports drive through a different
route than Tongkat Ali, and the two ingredients add to each other's effects.
Nutritional Profile Analysis
Maca is also a nutritious root in its own right. It provides:
- Complex carbohydrates, fiber and plant protein
- Minerals including potassium, calcium, iron and copper
- Unique plant compounds called macamides and glucosinolates
Vitamin C (Ascorbic Acid)
Primary role: Antioxidant protection for blood vessels and collagen support.
Antioxidant Protection for Blood Vessels
Oxidative stress is harmful to circulation. Free radicals can break down nitric oxide before it does its
job. Vitamin C is a powerful antioxidant that helps protect nitric oxide, and a 2014 meta-analysis
in Atherosclerosis linked vitamin C supplementation to better endothelial (blood vessel lining) function.
Collagen Synthesis for Vascular Health
Your artery walls rely on collagen for strength and flexibility, and your body can't make collagen without
vitamin C. Getting enough vitamin C keeps the structure of healthy blood vessels in good shape.
Synergistic Effects with Other Ingredients
- Helps protect the nitric oxide that citrulline and icariin work to support
- Supports the immune system alongside the probiotic blend
- Adds everyday antioxidant support to the whole formula
Proprietary 9-Strain Probiotic Blend
Primary role: Supports digestion, nutrient absorption and immunity.
Gut Health and Nutrient Absorption
An ingredient only helps you if your body absorbs it. A balanced gut microbiome supports healthy digestion
and nutrient uptake. Adding probiotics helps the rest of the Red Boost formula do its job.
Immune System Support
Much of your immune system lives in and around your gut. A diverse probiotic blend supports a healthy
gut environment, which in turn supports a healthy immune system.
Digestive Comfort
Some botanical powders can feel heavy on the stomach. The probiotic blend supports digestive comfort,
so taking Red Boost every day stays easy.
- Nine probiotic strains for gut diversity
- Supports absorption of the other ingredients
- Supports digestion and immune health
All 8 Ingredients. One Daily Scoop.
Buying each of these ingredients separately would mean eight bottles, eight labels and eight bills. Red Boost puts them all in one daily powder.
Get Red Boost Now →
