Boostaro® Ingredients (2026) | Official Formula, Dosages & Clinical Evidence

Inside Every Bottle

The Boostaro Ingredient Stack — All 7 Compounds

Each Boostaro capsule contains a precisely formulated blend of 7 clinically studied amino acids, vitamins, minerals, and plant extracts — chosen for their documented role in supporting nitric oxide production, healthy erections, blood flow, and male wellness.

The complete Boostaro formula includes: Vitamin C (Ascorbic Acid) — 500 mg, Vitamin K (Menaquinone / K2) — 100 mcg, plus a Proprietary Blend (725 mg) containing L-Citrulline, L-Lysine HCL, Pine Bark Extract (95% Proanthocyanidins), Magnesium Citrate, and Nattokinase. Inactive ingredients: cellulose vegetable capsule, magnesium stearate (vegetable), stearic acid, and silica.

Boostaro is plant-based, non-GMO, gluten-free, and contains no synthetic stimulants. The supplement is manufactured in an FDA-registered, GMP-certified U.S. facility with third-party batch testing for purity and potency. Below, we detail every active ingredient and explain why it's there.

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Boostaro natural ingredients — botanical and clinical

Complete Formula

All 7 Boostaro Ingredients — Full Clinical Breakdown

Each compound below appears on the official Boostaro supplement facts label. Click any ingredient name to jump straight to its details.

Ingredient	Amount	Primary Role
Vitamin C (Ascorbic Acid)	500 mg (555% DV)	Stabilizes nitric oxide, collagen synthesis, antioxidant
Vitamin K (Menaquinone / K2)	100 mcg	Vascular flexibility, arterial calcium balance
L-Citrulline	Proprietary Blend	Nitric oxide precursor → vasodilation, blood flow
L-Lysine HCL	Proprietary Blend	Collagen, energy metabolism, vascular support
Pine Bark Extract (Pycnogenol)	95% Proanthocyanidins	Antioxidant, protects NO, endothelial function
Magnesium Citrate	Proprietary Blend	Free testosterone, vasodilation, ATP, 300+ enzymes
Nattokinase	Proprietary Blend	Healthy blood viscosity, fibrinolytic, cardiovascular
Total Proprietary Blend		725 mg

Source: Official Boostaro supplement facts label.

Vitamin

Vitamin C (Ascorbic Acid)

500 mg per serving 555% Daily Value Antioxidant + Collagen

A therapeutic 500 mg dose — far above standard multivitamin levels. Vitamin C stabilizes nitric oxide, supports collagen synthesis for blood vessel walls, and provides antioxidant protection against oxidative stress.

Inside Boostaro, Vitamin C works synergistically with L-Citrulline and Pine Bark Extract to extend nitric oxide activity and protect arterial integrity. Clinical observations also link adequate Vitamin C status with improved erectile function and stress hormone (cortisol) regulation.

Clinical evidence Adequate Vitamin C status correlates with improved endothelial function and erectile health in observational studies. Vitamin C also potentiates the nitric-oxide-supporting effects of arginine-pathway compounds. (See: Carr & Maggini, Nutrients, 2017.)

Vitamin

Vitamin K (Menaquinone / K2)

100 mcg per serving Vascular Health Arterial Flexibility

Vitamin K2 directs calcium toward bones and away from arterial walls — preserving vascular flexibility, reducing arterial stiffness, and supporting healthy erections through better-functioning blood vessels.

It activates the protein matrix Gla-protein (MGP), which prevents calcium accumulation in arterial tissue. This calcium-routing function makes K2 a critical long-term cardiovascular ingredient, especially as men age.

Clinical evidence The Rotterdam Study followed 4,807 adults for 10 years and found higher dietary Vitamin K2 intake was associated with a substantially lower risk of arterial calcification. A 2015 paper in Maturitas noted K2's potential role in supporting cardiovascular function and testosterone. (Geleijnse et al., J Nutr, 2004; Maresz, Int Med Rev, 2015.)

Amino Acid

L-Citrulline — The Nitric Oxide Precursor

Proprietary Blend (725 mg) Cornerstone Ingredient Vasodilation

The cornerstone of the Boostaro formula. L-Citrulline is an amino acid that converts in the kidneys to L-Arginine, which the body then uses to produce nitric oxide (NO) — the key signalling molecule that relaxes and dilates blood vessels.

Higher nitric oxide levels improve blood flow throughout the body — including to reproductive tissue, supporting healthy erections and enhancing exercise performance. Notably, oral L-Citrulline raises plasma L-Arginine more efficiently than supplementing L-Arginine itself.

Clinical evidence A 2011 randomized study in Urology found L-Citrulline supplementation improved erection hardness scores in men with mild ED. A 2010 study in the Journal of Strength and Conditioning Research reported improved exercise endurance and reduced muscle fatigue. Studies in the British Journal of Pharmacology demonstrate significant nitric oxide elevation and improved vascular dilation. (Cormio et al., Urology, 2011; Pérez-Guisado & Jakeman, JSCR, 2010.)

Amino Acid

L-Lysine HCL — Energy & Collagen Support

Proprietary Blend Essential Amino Acid Vascular Structure

An essential amino acid that the body cannot produce on its own — must come from diet or supplementation. L-Lysine HCL supports carnitine production (the molecule that converts fat into usable cellular energy), collagen formation, calcium absorption, and stress reduction.

For male wellness, L-Lysine helps strengthen artery walls and is associated with improved vascular structure. It works synergistically with Vitamin C to drive healthy collagen synthesis — making blood vessels more resilient.

Clinical evidence L-Lysine and Vitamin C together support collagen biosynthesis, the structural protein in arterial walls. Adequate lysine intake supports carnitine-dependent fatty acid oxidation, a key energy pathway. (See: Civitelli et al., Nutrition, 1992; Flanagan et al., Nutrition Research Reviews, 2010.)

Plant Extract

Pine Bark Extract (Pycnogenol)

95% Proanthocyanidins Proprietary Blend Antioxidant + NO Synthase

A potent antioxidant standardized to 95% proanthocyanidins, derived from the bark of the French maritime pine (Pinus pinaster). Pine Bark Extract protects nitric oxide from oxidative degradation and stimulates endothelial nitric oxide synthase (eNOS) — meaning it both produces more NO and protects what's already there.

Clinical research shows Pycnogenol enhances endothelial function, vascular flexibility, and blood flow. The combination of L-Arginine plus Pycnogenol — exactly the synergy Boostaro leverages — has been the subject of multiple studies on male sexual function.

Clinical evidence A landmark 2003 randomized study by Stanislavov & Nikolova published in the Journal of Sex & Marital Therapy found that L-Arginine + Pycnogenol restored normal erectile function in 92.5% of men after 3 months. Subsequent trials in Phytotherapy Research and BJU International replicated improvements in erectile function and sperm quality. (Stanislavov & Nikolova, J Sex Marital Ther, 2003; Aoki et al., Phytother Res, 2012.)

Mineral

Magnesium Citrate

Proprietary Blend Free Testosterone 300+ Enzymatic Reactions

Magnesium Citrate is the most bioavailable form of magnesium. It is vital for over 300 biochemical reactions in the body — including ATP production, muscle and nerve function, and protein synthesis.

For male performance specifically, Magnesium increases free (bioactive) testosterone by limiting its binding to sex hormone-binding globulin (SHBG). It also promotes vasodilation, supports blood pressure regulation, and contributes to cardiovascular health.

Clinical evidence A 2011 study in the Biological Trace Element Research showed magnesium supplementation increased free and total testosterone in both sedentary and athletic men. Research in the Journal of Pharmaceutical and Biomedical Analysis documents magnesium's modulation of SHBG-bound testosterone. (Cinar et al., Biol Trace Elem Res, 2011.)

Enzyme

Nattokinase

Proprietary Blend Fibrinolytic Cardiovascular Support

A unique fibrinolytic enzyme extracted from natto, a traditional Japanese food made from fermented soybeans. Nattokinase supports healthy blood viscosity, smooth circulation, and helps maintain clean arteries.

Some researchers attribute the exceptional male longevity and cardiovascular health observed in Japanese populations partly to regular natto consumption. In Boostaro, Nattokinase complements the nitric-oxide pathway by supporting the physical "flow" properties of blood — not just the dilation of vessels.

Clinical evidence Research published in Biomarker Insights (2018) found that natto consumption is linked with favorable cardiovascular effects and reduced cardiovascular disease mortality. Studies in the Hypertension Research journal and Nutrients have documented Nattokinase's effects on healthy fibrinolytic activity and blood pressure. (Chen et al., Biomarker Insights, 2018; Kim et al., Hypertens Res, 2008.)

Why the Combination Works

Synergistic Mechanisms in the Boostaro Formula

The Boostaro ingredients aren't randomly chosen — they form three interlocking systems that amplify each other's effects.

Nitric Oxide Network

L-Citrulline + Pine Bark Extract + Vitamin C converge to maximize nitric oxide production and protect it from oxidative breakdown. L-Citrulline supplies the precursor, Pine Bark stimulates NO synthase and shields it, Vitamin C stabilizes it — extending the duration of healthy vasodilation and blood flow.

Circulation & Blood Flow

L-Citrulline + Magnesium Citrate + Nattokinase support healthy circulation on multiple levels. L-Citrulline drives vasodilation through nitric oxide, Magnesium Citrate promotes blood vessel relaxation and supports over 300 enzymatic reactions, and Nattokinase supports healthy blood viscosity — together maintaining clean, free-flowing circulation for daily energy and performance.

Vascular Integrity

L-Lysine HCL + Vitamin C + Vitamin K2 work together for arterial health. L-Lysine HCL and Vitamin C drive collagen synthesis (vessel walls), while Vitamin K2 preserves arterial flexibility — giving blood vessels both strength and elasticity to support healthy erections long-term.

Boostaro Quality Standards

Why Boostaro's Ingredients Are Different

The Boostaro formula stands apart from generic men's wellness supplements for several reasons:

Therapeutic doses — not "fairy dusting" to fit a label claim
Clinically studied forms — Magnesium Citrate (most bioavailable), Vitamin K2 as menaquinone, Pine Bark standardized to 95% proanthocyanidins
Synergistic combinations — L-Citrulline + Vitamin C + Pine Bark work better together than alone
Third-party tested — every batch verified for purity and potency
No proprietary fluff — Boostaro lists exact amounts of every key active ingredient
Plant-based, non-GMO, gluten-free formula with no synthetic stimulants

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Boostaro supplement facts label — full ingredient breakdown

Peer-Reviewed Sources

Clinical Research & Bibliography

Every clinical claim about Boostaro ingredients on this page is supported by peer-reviewed research. The following references are provided for transparency and verification by readers and researchers.

Cormio L, et al. "Oral L-citrulline supplementation improves erection hardness in men with mild erectile dysfunction." Urology. 2011;77(1):119-122. PubMed: 21195829
Stanislavov R, Nikolova V. "Treatment of erectile dysfunction with pycnogenol and L-arginine." Journal of Sex & Marital Therapy. 2003;29(3):207-213. PubMed: 12851125
Pérez-Guisado J, Jakeman PM. "Citrulline malate enhances athletic anaerobic performance and relieves muscle soreness." Journal of Strength and Conditioning Research. 2010;24(5):1215-1222. PubMed: 20386132
Geleijnse JM, et al. "Dietary intake of menaquinone is associated with a reduced risk of coronary heart disease: the Rotterdam Study." The Journal of Nutrition. 2004;134(11):3100-3105. PubMed: 15514282
Maresz K. "Proper Calcium Use: Vitamin K2 as a Promoter of Bone and Cardiovascular Health." Integrative Medicine. 2015;14(1):34-39. PMC: 4566462
Cinar V, et al. "Effects of magnesium supplementation on testosterone levels of athletes and sedentary subjects at rest and after exhaustion." Biological Trace Element Research. 2011;140(1):18-23. PubMed: 20352370
Carr AC, Maggini S. "Vitamin C and Immune Function." Nutrients. 2017;9(11):1211. PMC: 5707683
Chen H, et al. "Nattokinase: A Promising Alternative in Prevention and Treatment of Cardiovascular Diseases." Biomarker Insights. 2018;13:1-8. PMC: 6043915
Aoki H, et al. "Clinical assessment of a supplement of Pycnogenol and L-arginine in Japanese patients with mild to moderate erectile dysfunction." Phytotherapy Research. 2012;26(2):204-207. PubMed: 21567519
Kim JY, et al. "Effects of nattokinase on blood pressure: a randomized, controlled trial." Hypertension Research. 2008;31(8):1583-1588. PubMed: 18971533

References to clinical research on individual ingredients are provided for educational purposes. While each Boostaro ingredient has individual evidence supporting its mechanism, no large-scale clinical trial has been conducted on the complete Boostaro proprietary blend.

⚕ Medical & Editorial Disclaimer

The information on this page is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Boostaro is a dietary supplement, not a prescription medication, and statements about its ingredients have not been evaluated by the U.S. Food and Drug Administration (FDA).

Always consult your healthcare provider before starting any new supplement, especially if you take prescription medications, have a chronic medical condition, or are scheduled for surgery. Individual results vary based on age, lifestyle, diet, and overall health.

Ingredient amounts on this page reflect the official Boostaro supplement facts label (Vitamin C 500 mg, Vitamin K [Menaquinone] 100 mcg, plus a 725 mg Proprietary Blend of L-Citrulline, L-Lysine HCL, Pine Bark Extract [95% Proanthocyanidins], Magnesium Citrate, and Nattokinase). Inactive ingredients: cellulose vegetable capsule, magnesium stearate (vegetable), stearic acid, silica.

Boostaro® Ingredients Explained: Official Formula, Dosages & Clinical Research (2026)

The Boostaro Ingredient Stack — All 7 Compounds

All 7 Boostaro Ingredients — Full Clinical Breakdown

Vitamin C (Ascorbic Acid)

Vitamin K (Menaquinone / K2)

L-Citrulline — The Nitric Oxide Precursor

L-Lysine HCL — Energy & Collagen Support

Pine Bark Extract (Pycnogenol)

Magnesium Citrate

Nattokinase

Synergistic Mechanisms in the Boostaro Formula

Nitric Oxide Network

Circulation & Blood Flow

Vascular Integrity

Why Boostaro's Ingredients Are Different

Clinical Research & Bibliography

⚕ Medical & Editorial Disclaimer

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