Dr. Louis Ignarro

Pharmacologist and Nobel laureate

Nitric oxide signaling and cardiovascular pharmacology

1Episode

60 minAnalysed

1Topic

Last reviewed: Jul 29, 2026·Credential: PhD; Nobel Prize in Physiology or Medicine, 1998·First indexed: Jul 29, 2026

About the expert

Focus: Nitric oxide and cardiovascular health

Louis Ignarro, PhD, is a pharmacologist who shared the 1998 Nobel Prize in Physiology or Medicine for discovering nitric oxide as a signaling molecule in the cardiovascular system. He has been associated with nitric-oxide supplement products, a commercial interest worth noting.

Why this matters

Nobel-laureate pharmacologist who discovered nitric oxide's role in the cardiovascular system. Authoritative on the core biology; some applied and supplement claims run ahead of the clinical evidence.

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Topics covered

Nitric Oxide (Human)

Episodes with Dr. Louis Ignarro

What is nitric oxide, and how can you support it naturally?

Nitric oxide is a gas the body makes that tells blood vessels to relax and widen. This episode, featuring the scientist who discovered its role, explains why that matters for blood pressure and circulation. It suggests vegetables, exercise, and nasal breathing may support natural production. A separate claim about inhaled nitric oxide for COVID is far less settled.

60 minHuman

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