vitamin b12 injection im or subq Benefits of Shots Why Do I Feel Worse

But, you might see changes in a few weeks to months

See the in-depth TB-4 and TB-500 guide

Expected: Fine lines soften, elasticity improves, visible glow returns, skin thickness increases

According to the randomization procedure, Group 1 was assigned to the novel methylcobalamin nasal spray (NASO B12) and Group 2 was assigned to methylcobalamin oral tablet for the treatment of vitamin B12 deficiency during the study period of 15 days [Figure 1]

B12 injections generally work faster and suit people with absorption problems or severe deficiency, while supplements are a suitable, lower-cost option for mild, diet-related shortfalls

The two work through different mechanisms and may produce additive benefits