TB-500 promotes cellular recovery and helps regulate inflammation
Some advanced users do split the dose (morning and evening) if taking higher amounts, but for most, a single daily dose is sufficient due to the relatively long half-life of NAD+ in cells
WADA resource University of Glasgow

each 10% reduction in homocysteine is associated with 1.45-2.55 reduction in pulse pressure mmHg in patients undergoing hemodialysis (14)(27)(31) Increased urinary excretion of homocysteine in its sulfonated form (36) Omega-3 fatty acids 200-6,000 mg (~98-2,000 mg EPA/490-1,000 mg DHA) per day, for 1-12 months in patients with hyperhomocysteinemia or elevated homocysteine within normal ranges (8)(11)(13)(17)(18)(19)(25)(30)(42)(43) Reduced homocysteine by 1.18-1.58 mol/L on average using wide dose ranges, as shown in meta-analyses (8)(18) Reduced homocysteine by ~2.5-4.0 mol/L in patients with type II diabetes, patients on hemodialysis, or healthy adults using mid-range doses of 2,000-3,600 mg per day for 1-3 months and up to one year (11)(17)(25)(30)(42)(43) Reduced homocysteine by ~1.6 mol/L over 12 months in patients younger than 65 years, previously suffering from myocardial infarction (13) Adjunct therapy with folic acid, vitamin B6, and vitamin B12 improved efficacy (8)(17) Adjunct aerobic exercise and cognitive stimulation may be required for benefit in some populations, including older adults with mild cognitive impairment (19)

In research models, this inhibition indirectly preserves NAD by reducing methylation of nicotinamide, and also maintains SAM levels an effect precursors do not address
Vitamin B12 is also known for boosting metabolism, which can aid in weight loss