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Description
Buffered NAD+ ships with a pH stabilizer (most commonly Tris) that brings the reconstituted solution closer to physiological pH (~7-8.5), while unbuffered NAD+ reconstitutes acidic (~pH 3-4) and is more often associated with injection-site stinging

Despite these findings, the evidence is by no means uniformly positive

[DOI] [PMC free article] [PubMed] [Google Scholar] 345.Lenaz G

Dhuriya YK, Sharma D

Proper technique requires inserting the needle fully into the muscle before injection
