Sterile saline, which is sterile saltwater, is often used for wound cleaning, contact lens rinsing, and certain types of injections
If needed for a clear medical indication (such as treating pellagra in a pregnant patient), niacinamide can be used with caution, but unnecessary high-dose B supplementation is avoided in pregnancy
Comparative studies looking at dose-response on either compound separately should use the standalone preparations to control concentration independently
The effects of vitamin B12 shots can vary from person to person
GLP-1 agonists commonly cause nausea, vomiting, and gastrointestinal distress, particularly during dose escalation
Amino acids can be arranged in any order you like, so a chain of 15 amino acids has 20^15 possible sequences, or about 3.3 x 10^19, which is 33 quintillion possibilities