Question 1

Should I take NMN and NR together?

Accepted Answer

No. They are redundant NAD+ precursors that converge on the same final NAD+ pool. Pick one based on availability and cost; stacking both daily has no documented additive benefit.

Question 2

What is the David Sinclair NMN protocol?

Accepted Answer

David Sinclair has described taking roughly 1 g of NMN with 1 g of resveratrol mixed into yogurt or olive oil in the morning, plus metformin in the evening on non-training days, alongside a foundation of vitamin D, K2, and statin therapy. His personal regimen is self-reported — treat it as one well-documented data point rather than a clinical protocol.

Question 3

Can I take metformin and berberine together?

Accepted Answer

Generally avoid stacking them. They activate the same AMPK pathway and lower glucose by overlapping mechanisms, while their GI side effects are additive. Choose one.

Question 4

How often should I take fisetin and quercetin?

Accepted Answer

Pulsed, not daily. The Mayo-style senolytic protocol uses high doses on 1–2 consecutive days, then weeks off. Daily senolytic exposure is not the intended design.

Question 5

Why does D3 need K2 and magnesium?

Accepted Answer

K2 activates matrix Gla-protein so calcium is deposited in bone rather than arteries, and magnesium is a required cofactor for D3 activation. Without them, D3 supplementation is incomplete and potentially counterproductive.

Question 6

Does metformin blunt the longevity benefits of NMN?

Accepted Answer

Possibly. Several mechanistic reviews suggest metformin may dampen NAD+-driven sirtuin signaling. The pragmatic workaround is to separate dosing windows or pulse metformin around training cycles.

Longevity Supplement Interaction Engine — RetatrutideCompare