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Choosing between beetroot and citrulline starts with what you want to compare. Ingredient identity, format, taste and published amounts are things a product page can tell you. Your personal response is something it cannot promise.
What matters in a beet product
Look for a stated nitrate amount if you are comparing a product with nitrate research. The quantity of beetroot alone is insufficient, because nitrate content can vary. A capsule, chew and juice concentrate are different formulations even when each has a beet on the label.
What matters in a citrulline product
Look for the amount of L-citrulline itself. If the label lists citrulline malate or a mixed blend, check whether the citrulline contribution is available. Describe why a quantity is unavailable: an individual amount inside a proprietary blend, an unstated nitrate yield, or a detail that could not be verified.
Research is specific
Exercise findings from beetroot juice cannot simply be assigned to every beet supplement. NIH describes variable results and limited evidence for citrulline as an exercise aid. Read the NIH evidence summary ↗.
Choose a comparison you can actually make. “Two chews versus one scoop” describes a routine. “500 mg beetroot versus 4 g citrulline” does not describe equivalent doses or expected benefits.
For general education, not diagnosis or treatment. If you take medicines or have a health condition, have a clinician or pharmacist review the exact formula before use.