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Strong Opposition

A nose spray with nitric oxide can quickly kill over 99% of flu, COVID, and cold viruses in lab tests.

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Evidence from Studies

Supporting (1)

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Broad-Spectrum Virucidal Activity of Nitric Oxide Nasal Spray (NONS) Against SARS-CoV-2 Variants and Major Respiratory Viruses

Cross-Sectional Study
In Vitro
2026 Jan 9

The study tested the same nasal spray and found it kills over 99% of the flu, COVID, and cold viruses in minutes, just like the claim says.

Contradicting (1)

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Community contributions welcome

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Nitric oxide and its derivatives containing nasal spray and inhalation therapy for the treatment of COVID-19.

Narrative Review
2022

This study talks about using nitric oxide nasal spray for COVID-19 but doesn't show any numbers or tests to prove it kills 99% of viruses quickly, so it doesn't support the claim.

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Similar Assertions

A nose spray with nitric oxide quickly kills over 99.9% of the COVID-19 virus and its variants in lab tests, working in as little as 30 seconds.

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84%

A nose spray with nitric oxide might quickly lower the amount of COVID-19 virus in your body, cutting it by 95% in one day and 99% in three days for people with mild symptoms.

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68
79%

A nose spray with nitric oxide helps people with mild COVID-19 get rid of the virus faster. When used several times a day for over a week, it reduces the virus amount 16 times quicker than a placebo spray by the second and fourth days.

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68
79%

This idea is about using a nose spray or breathing treatment with nitric oxide to hit the spot where COVID-19 germs first enter your body, which might help fight the infection better.

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78%

A nasal spray with nitric oxide helps people with mild COVID-19 by reducing the amount of virus in their body over a week of treatment, making them less sick.

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68
77%

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