Based on the available research data from Pillser, here's what the evidence shows:

Quercetin and Oxygen-Related Outcomes

There is no direct research in Pillser's database specifically measuring quercetin's effect on blood oxygen saturation (SpO2). However, there is some related evidence:

Improved VO₂max

Pillser's database contains 1 study showing a beneficial effect of quercetin on VO₂max (the maximum amount of oxygen the body can utilize during intense exercise)¹. This is related to oxygen utilization efficiency, not necessarily blood oxygen saturation levels.

Reduced Lactate Dehydrogenase (LDH)

2 studies show quercetin may help reduce lactate dehydrogenase levels, an enzyme that can indicate tissue damage and cellular oxygen deprivation².

Other Relevant Findings

• Reduced C-Reactive Protein (CRP): 1 out of 2 studies showed benefit in lowering this inflammatory marker³
• Reduced Systolic Blood Pressure: 1 study with a beneficial effect⁴

Bottom Line

The evidence for quercetin directly improving blood oxygen levels is lacking. The closest finding is that it may modestly improve VO₂max (oxygen utilization during exercise), but this is a measure of fitness performance rather than blood oxygen saturation. If you're looking for supplements to support oxygen delivery, compounds like iron (for hemoglobin production) or nitrates (e.g., from beetroot, for vasodilation) are more commonly studied for this purpose.

Would you like me to look into any specific supplements related to oxygen levels or exercise performance?

Footnotes

1. Pillser research database, Quercetin and Improved VO₂max ↩

2. Pillser research database, Quercetin and Reduced Lactate Dehydrogenase Level ↩

3. Pillser research database, Quercetin and Reduced C-Reactive Protein Levels ↩

4. Pillser research database, Quercetin and Reduced Systolic Blood Pressure ↩