However, vitamin B12 deficiency can cause damage to your nerves and affect brain function
Common Side Effects When side effects occurred, they were typically mild, transient, and similar in frequency to placebo groups: Reported Adverse Effects Most Common (occurring in small percentage of participants): Mild to moderate headaches (most frequently reported, often resolving with continued use) Injection site reactions (minor redness, swelling, or irritation at injection site) Gastrointestinal effects (particularly at higher oral doses: mild nausea, diarrhea, flatulence) Fatigue (reported occasionally during initial adaptation period) Rare Events: One case of chest tightness was deemed possibly related to treatment in safety trials
Because the intranasal forms have lower absorption than the IM dosage form, intranasal B12 forms are administered once weekly
This makes it particularly intriguing for athletes, bodybuilders, and individuals looking for advanced body recomposition strategies
Prevents the patient from travelling when feeling weak or disoriented
