Boostaro Ingredients: The Full 7-Ingredient Breakdown
Seven ingredients across two functions: nitric oxide production and cardiovascular protection.
Boostaro contains seven ingredients targeting two functions: nitric oxide production (for blood flow and erectile function) and long-term cardiovascular protection (artery health, anti-calcification, blood clot support). Every ingredient is named on the label, but five of seven are grouped in a 725mg proprietary blend — meaning you can't verify individual doses. Here's the full breakdown.
Quick Verdict: Two individually dosed ingredients (Vitamin C 500mg, Vitamin K2 100mcg) plus a 725mg proprietary blend containing L-Citrulline, L-Lysine HCL, Pine Bark Extract, Magnesium Citrate, and Nattokinase. No stimulants, no hormones, no caffeine. The biggest limitation: you can't verify how much L-Citrulline or Pine Bark you're actually getting.
Nitric Oxide & Blood Flow Ingredients
L-Citrulline (in 725mg proprietary blend) — The primary circulatory ingredient in Boostaro. L-Citrulline is an amino acid that converts to L-Arginine in the body, which then produces nitric oxide. Nitric oxide relaxes and widens blood vessels, increasing blood flow. This is part of the same nitric-oxide signaling pathway involved in normal erectile function, although L-Citrulline works differently from prescription PDE5 inhibitors. Published research: A study found that 1,500mg of L-Citrulline daily for one month improved erection hardness in 50% of participants with mild to moderate ED. The key question with Boostaro is whether the proprietary blend contains enough L-Citrulline to match studied doses.
Pine Bark Extract (Pinus Pinaster, 95% Proanthocyanidins) (in blend) — Pine Bark Extract has been studied for its possible role in supporting nitric oxide pathways. Research has examined how proanthocyanidins may help preserve NO from oxidative degradation, potentially extending its availability. Published research: A 2010 study combining Pine Bark Extract with L-Arginine showed significant improvements in erectile function. Important caveat: that study tested a specific two-ingredient combination at specific doses, not the full Boostaro formula.
Cardiovascular Protection Ingredients
Vitamin C — 500mg. One of only two individually dosed ingredients. Supports collagen formation and antioxidant protection in blood vessels, and vitamin C has also been studied for its role in endothelial function and nitric oxide availability. At 500mg, this is a meaningful dose — well above the RDA of 90mg.
L-Lysine HCL (in blend) — Essential amino acid that has been studied for its possible role in supporting healthy arterial walls. The Pauling research examined the Vitamin C + L-Lysine combination in the context of cardiovascular support.
Vitamin K2 — 100mcg (as Menaquinone). The second individually dosed ingredient. Has been studied for its possible role in supporting healthy arterial flexibility by influencing calcium metabolism in blood vessels. The Rotterdam Heart Study (15,000+ participants) found that K2 intake was associated with reduced cardiovascular disease risk. At 100mcg, the dose is clearly disclosed on the label, unlike the five ingredients hidden inside the proprietary blend.
Magnesium Citrate (in blend) — Regulates blood vessel function and blood pressure. Published research shows that magnesium deficiency is common in men with ED — and that supplementation can support smooth muscle relaxation and healthy blood flow.
Nattokinase (in blend) — An enzyme derived from natto (Japanese fermented soybeans) studied for its effects on blood clotting and fibrinolytic activity. Important safety note: Nattokinase has blood-thinning properties, so men taking anticoagulant medication should consult their doctor before using Boostaro.
The Proprietary Blend Problem
This is the biggest transparency issue with Boostaro's formula. Five of the seven ingredients — including the two most important ones (L-Citrulline and Pine Bark Extract) — are grouped in a 725mg proprietary blend. You know the total weight is 725mg, but you don't know how much of each ingredient you're getting.
For context: published L-Citrulline studies typically use 1,500-3,000mg daily. If L-Citrulline alone needs 1,500mg to show results, and the entire blend is only 725mg, it's mathematically impossible for L-Citrulline to be present at studied doses unless the other four ingredients are present in very small amounts.
This doesn't mean the formula can't work — it means you can't verify whether it should work based on the label alone. The 60-day guarantee becomes particularly important here: it lets you evaluate the formula through personal experience rather than relying on dose verification.
Full Ingredient Table
| Ingredient | Dose | Primary Role |
|---|---|---|
| Vitamin C | 500mg | Artery wall strength + NO protection |
| Vitamin K2 | 100mcg | Anti-calcification |
| L-Citrulline | In 725mg blend | Nitric oxide production |
| Pine Bark Extract (95%) | In 725mg blend | NO activation + antioxidant |
| L-Lysine HCL | In 725mg blend | Arterial wall support |
| Magnesium Citrate | In 725mg blend | Blood vessel regulation |
| Nattokinase | In 725mg blend | Fibrinolytic / blood flow |
Stimulant-free. Hormone-free. Caffeine-free. Manufactured in the USA in a facility registered with the FDA and described as operating under GMP requirements.
Frequently Asked Questions
Does Boostaro contain testosterone or hormones?
No. Boostaro contains zero hormones, zero testosterone, and zero stimulants. The formula targets erectile function through the nitric oxide and cardiovascular pathway — not the hormonal pathway.
Are the ingredient doses effective?
Vitamin C at 500mg and Vitamin K2 at 100mcg are at meaningful doses. However, the five ingredients in the proprietary blend (725mg total) cannot be individually verified. Published L-Citrulline studies typically use 1,500-3,000mg — it's unclear whether the blend contains enough to match studied doses.
Is the proprietary blend a red flag?
It's a transparency limitation, not necessarily a red flag. Many supplement companies use proprietary blends. But it does mean you can't verify the formula's potency from the label alone. The 60-day guarantee lets you evaluate through personal experience instead.
Boostaro is a dietary supplement and has not been evaluated by the FDA. Not intended to diagnose, treat, cure, or prevent any disease.
Official support: support@getboostaro.com | 1-888-851-5931 (7am–9pm, 7 days/week)