NaCl helps the osmotic component, but a buffered version of NAD+ addresses the actual cause. Tesamorelin is the one people get backwards: its FDA label specifies sterile water, but that is regulatory convenience, not the better diluent
If you are vegetarian and not regularly having three or more dairy servings per day, food alone is unlikely to meet your B12 needs consistently, particularly during pregnancy or breastfeeding

10+ deals B12 Injection (Health & Fitness) in Gloucester, MA 10+ Deals available Health Source Online NAD+ Injection Therapy - Subcutaneous Injections & Nasal Spray 4.1(2,110) -25%Limited time LeanerRx Glutathione Injections for Detox & Immune Support 4.4(871) -18%Limited time bmiMD Boost Weight Loss with bmiMDs Supplements or NAD+ Injections 4(6,293) -21%Limited time Healthogenics NAD+ patches and Consultation for a 30-day Health Boost 3.6(1,577) -55%Limited time bmiMD 4-Week Glutathione Injection Plan with Virtual Consult at bmiMD 4(6,293) -17%Limited time Bella Aesthetics One, Three or Five Vitamin B12 Injections 1000 Cambridge Street, Cambridge 4.5(10) -31%Limited time LeanerRx Boost Your vitality: BioBoost plus LIPO At-Home injection 4.4(871) -71%Limited time Healthogenics Super MIC B12 Lipotropic Patches + Online Weight Loss & Health Course 3.6(1,577) -80%Limited time BloomMD Glutathione Detox & Wellness Injections by BloomMD - Free Shipping

further notes that a Change.org petition started by the petitioners on this issue has garnered over 94,000 signatures