The Boostaro Supplement Facts Label
Each bottle holds 60 capsules and the serving is two capsules a day. Per serving, the current label lists:
An antioxidant that also supports normal collagen formation in blood vessel walls.
Helps direct calcium where the body needs it. Also affects blood clotting, which matters if you take warfarin.
L-Citrulline, L-Lysine HCl, Pine Bark Extract (95% proanthocyanidins), Magnesium Citrate and Nattokinase. The label gives the blend total, not each amount.
An amino acid the body turns into L-arginine, which feeds nitric oxide production and blood vessel relaxation.
Rich in proanthocyanidins, antioxidants studied for blood vessel function, often alongside citrulline or arginine.
An essential amino acid used for protein and collagen building.
A well-absorbed form of magnesium, involved in muscle, nerve and blood vessel function.
An enzyme from fermented soybeans (natto) that affects blood clotting. Important if you take blood thinners.
Some websites still show an older or invented list with CoQ10, L-Proline and exact doses of 1,200 mg. That doesn't match the current label. Always check the Supplement Facts panel on the checkout page and on your bottle.
What the 725 mg Proprietary Blend Means
Five ingredients share one 725 mg total. The label tells you what's in the blend, but not how much of each ingredient.
That's the biggest limitation of the formula. Research on L-Citrulline for blood flow often uses 1,500 mg or more a day on its own, which is more than the entire blend. So Boostaro works as a combination of several ingredients at modest amounts, not as a high-dose citrulline product. If exact doses matter to you, this is the point to weigh.
L-Citrulline and Pine Bark Extract: the Blood Flow Core
L-Citrulline is an amino acid the body converts into L-arginine, which is used to make nitric oxide. Nitric oxide relaxes the smooth muscle in blood vessel walls so blood flows more easily. Citrulline is preferred over arginine in supplements because more of it survives digestion.
Pine Bark Extract, standardized here to 95% proanthocyanidins, is an antioxidant studied for blood vessel function. It's often researched alongside arginine or citrulline, which is likely why the two are paired.
Vitamin C and Vitamin K2
Vitamin C (500 mg) is an antioxidant and is needed to build collagen, including in blood vessel walls. 500 mg is a meaningful amount, well above the daily recommended intake but below the 2,000 mg upper limit for adults.
Vitamin K2 (100 mcg) helps the body direct calcium and plays a role in normal blood clotting. That clotting role is why anyone on warfarin needs to speak to their doctor before taking it.
L-Lysine, Magnesium and Nattokinase
L-Lysine HCl is an essential amino acid, used for protein and collagen building. Magnesium Citrate is a well-absorbed form of magnesium, involved in muscle, nerve and blood vessel function.
Nattokinase is an enzyme from natto, a fermented soybean food. It affects blood clotting, which is part of why it appears in circulation formulas. It's also the ingredient that most needs care: combined with blood thinners or antiplatelet drugs, it may increase bleeding risk. Anyone with a soy allergy should also check the label.
Our Take on the Formula
The ingredient choice is coherent. Everything relates to nitric oxide, antioxidant protection or blood vessel health, and there's no random filler. The weak spot is transparency: the proprietary blend stops you from checking whether each ingredient is present in a research-level amount.
It's a reasonable daily circulation formula to try with the 60-day guarantee, as long as you're not on blood thinners. Read the safety guide before starting.
Check the current label on the seller's page.
Check Today's Price →Questions About Ingredients
What are the ingredients in Boostaro?+
Per two capsules: Vitamin C 500 mg, Vitamin K2 100 mcg and a 725 mg proprietary blend of L-Citrulline, L-Lysine HCl, Pine Bark Extract, Magnesium Citrate and Nattokinase.
Does Boostaro contain CoQ10 or L-Proline?+
Not according to the current label. Some websites list them, but those lists don't match the current Supplement Facts panel.
How much L-Citrulline is in Boostaro?+
The label doesn't say. L-Citrulline is part of a 725 mg blend shared with four other ingredients, so the exact amount isn't disclosed.
Is Boostaro safe with blood thinners?+
Don't take it without speaking to your doctor. Vitamin K2 and Nattokinase both affect blood clotting.
Is Boostaro vegan or soy-free?+
Nattokinase comes from fermented soybeans, and capsule materials can vary. Check the current label if you avoid soy or animal products.