Berberine is one of the few supplements with human trial data behind it rather than marketing enthusiasm. It is a compound extracted from the bark and root of several plants, and it has been studied for three things in particular: glucose metabolism, where the research is strongest, lipid profile, and body composition.*

On blood sugar: berberine supports the body's normal handling of glucose — moving it out of the bloodstream and into cells where it gets used. This is the effect with the most human data behind it.*

On cardiovascular health: berberine supports normal cholesterol levels and heart function. The vascular and metabolic systems are not separate problems, which is why a compound that acts on one tends to show up in research on the other.*

On weight: berberine supports healthy metabolic function, which is the pathway underneath weight management. It is not an appetite suppressant and it is not a fat burner. It supports the machinery that determines what your body does with what you eat.*

Here is what matters for someone over 50: metabolic flexibility declines with age. The body gets less efficient at moving glucose out of the blood and into muscle, and that inefficiency shows up in your biological age long before it shows up in a diagnosis. Berberine is one lever on that pathway.*

It is not a replacement for what you eat or whether you move. Nothing in this line is. It is a tool for people already doing the work who want the metabolic pillar supported while they do it.

Two capsules daily, taken with water.

Ingredients: Granular Berberine Hydrochloride Extract 97% (bark), Granular Berberine Hydrochloride Extract 8% (bark/root), Cellulose (vegetable capsule), MCC (microcrystalline cellulose), L-Leucine, Olive Oil.

Manufacturer's country: USA

Product amount: 60 capsules

Gross weight (lb/g): 0.2 lb / 90 g

Suggested use: As a dietary supplement, adults take two (2) capsules daily. For best results, take with 6-8 oz (177-236ml) of water or as directed by healthcare professional.

Warning: Do not exceed recommended dose. Pregnant or nursing mothers, children under the age of 18, and individuals with known medical conditions should consult a physician before using this or any dietary supplement. KEEP OUT OF THE REACH OF CHILDREN. DO NOT USE IF SAFETY SEAL IS DAMAGED OR MISSING. STORE IN A COOL, DRY PLACE.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

This is a nitric oxide precursor formula, not nitric oxide itself — that distinction matters. Nitric oxide is a signaling molecule your endothelium produces to relax and widen blood vessels. You cannot swallow it. What you can do is supply the amino acids your body converts into it, which is what these three ingredients are.*

L-Citrulline DL-Malate at 400 mg is the workhorse. Citrulline converts to arginine in the kidneys and raises circulating arginine more reliably than taking arginine directly, because much of oral arginine is broken down in the gut before it reaches the bloodstream. The 350 mg of L-Arginine Hydrochloride and 50 mg of L-Arginine Alpha-Ketoglutarate supply substrate alongside it.*

Wider vessels move more blood, and more blood means more oxygen and nutrients reaching working muscle. That is the mechanism behind what people notice: better endurance during effort, better recovery after it, and support for muscle growth when training is there to drive it.*

Here is what matters for someone over 50: endothelial function declines with age. Blood vessels get stiffer and less responsive, and that shows up as reduced exercise capacity, slower recovery, and eventually as cardiovascular risk. This is the pillar where circulation lives.*

Most of the research on these compounds is in exercise performance rather than long-term vascular health, so take the claims for what they are. It supports the work you are already doing. It does not replace it.

Two capsules daily. Take them before training if you train.

Ingredients: L-Citrulline DL-Malate (400 mg), L-Arginine Hydrochloride (350 mg), L-Arginine Alpha-Ketoglutarate (50 mg), Vegetable Cellulose (Capsule), Brown Rice Flour.

Manufacturer's country: USA

Product amount (oz/lbs/g): 60 capsules / 2.5 oz / 0.15 lbs / 70 g

Gross weight (oz/lbs/g): 3.2 oz / 0.2 lbs / 90 g

Suggested use: As a dietary supplement adults take two (2) capsules daily. For best results, take with 6-8 oz (177-237ml) of water or as directed by healthcare professional.

Warning: Do not exceed recommended dose. Pregnant or nursing mothers, children under the age of 18, and individuals with known medical conditions should consult a physician before using this or any dietary supplement. KEEP OUT OF THE REACH OF CHILDREN. DO NOT USE IF SAFETY SEAL IS DAMAGED OR MISSING. STORE IN A COOL, DRY PLACE.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.