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Glossary · Supplements

What is Citrulline?

An amino acid that boosts nitric oxide and exercise performance.

In context

Citrulline is a key concept in supplements. An amino acid that boosts nitric oxide and exercise performance. Knowing what it means — and how it connects to the rest of your training — turns it from jargon into something you can actually use in the gym.

Nishaana is built around ideas like this: it tracks the numbers behind them automatically, so the theory shows up as real progress in your logbook rather than staying abstract.

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Related supplements terms

Common questions.

What does citrulline mean?

An amino acid that boosts nitric oxide and exercise performance.

What category does citrulline belong to?

Citrulline is a term from supplements in strength and fitness training. Browse more supplements terms in the Nishaana glossary.

Why does citrulline matter for training?

Understanding citrulline helps you train and program more deliberately — it is one of the ideas that separates guessing from a real, repeatable system.

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