Nitric Oxide Boosters

How nitric oxide supplements work

Nitric oxide is a molecule your body produces that signals the blood vessels to relax and widen, which supports blood flow. Supplements don't contain nitric oxide itself — instead they supply the raw materials your body uses to make it: the amino acids L-arginine and L-citrulline, and dietary nitrates from sources like beetroot.

The main ingredients

Three ingredients do most of the work. L-arginine is a direct precursor your body converts into nitric oxide. L-citrulline converts into arginine in the body and is often chosen because it's gentle on the stomach at higher doses. Beetroot supplies natural dietary nitrate, the food-based route — which is why beet crystals and powders are popular here.

For training vs. everyday circulation

Two groups reach for these. Athletes use nitric-oxide and "pump" formulas around training to support blood flow during a workout — these are often pre-workout blends that also include caffeine or other stimulants. Others prefer simpler beetroot or amino-acid options to support everyday circulation without the stimulants. If you're after the gym side specifically, see our pre-workout supplements.

Forms

You'll find capsules, powders, beetroot crystals, quick-dissolve tablets, and pre-workout drink mixes. The amino acids are common as plain capsules or powders; beetroot comes as crystals and powders you mix into water.

Nitric oxide supplements in Canada

Nitric oxide supplements sold in Canada carry a Natural Product Number (NPN) from Health Canada and ship from our Ontario warehouse to addresses across Canada.

A note before you start

If you take medication — especially anything affecting blood pressure or circulation — or have a heart condition, talk to your healthcare provider before using nitric oxide supplements. With stimulant-based pre-workout formulas, check the label for caffeine and avoid taking them late in the day.