injectable b12 shoppers drug mart Vitamin B-12 Injection, 5,000 mcg/mL, 100 ml This is an essential nutrient for the health of your pet Out of Stock - VITAMIN

[3] Additionally, NAD+ has been investigated for improving metabolic health, possibly benefiting conditions like metabolic syndrome by supporting better insulin sensitivity and mitochondrial function

Yes, but separate applications

Allergic reactions: Rarely, ingredients such as methionine or preservatives may cause an allergic reaction including itching, rash, or breathing difficulty

They may be considered supportive options, but they should not automatically be treated as replacements

Without enough B12, red blood cells can become large and abnormal, making it harder for them to deliver oxygen efficiently

And some who supplement with it say they feel born again. Sounds pretty promising