NAD+ 1000mg Carnitine is more effective as

Carnitine is more effective as an injection

It is a GH secretagogue

Results from the trial indicated that NAD+ supplementation led to improvements in cognitive function and slowed the progression of cognitive decline in some participants with age-related cognitive impairment or early-stage Alzheimer's disease

and clinical symptoms following NAD+ therapy in some patients with mitochondrial disorders

References:

NAD+ 1000mg Carnitine is more effective asNicotinamide adenine dinucleotide (NAD+) is not a peptide but a coenzyme found in all living cells. Discovered in 1906 by British biochemists Arthur Harden and William John Young, NAD+ has since been recognized as a crucial player in cellular metabolism, energy production, and various physiological processes. While it is not a peptide itself, NAD+ plays a vital role in peptide synthesis and other cellular functions. How it Works: NAD+ functions as a