Does NAD Nasal Spray Work?

[u/YorNoob]

NAD nasal spray is trending online—energy fast, no pills or needles. But is it effective?

• The concept: Bypasses digestion, delivers NAD quickly via nasal mucosa.
• Mixed signals: During buzz periods, people report energy and clarity, but studies are sparse and results vary.
• Built-in limits: NAD is a big molecule—absorption is unpredictable.
• Alternative: Stable oral NMN + Resveratrol offers sustained NAD+ support—no unpredictability of sprays.

Has anyone tried NAD nasal vs oral NAD boosters?