Vitamin B12 Injections vs. Oral Supplements: Which is Better? Uniq Laser Are Vitamin B12 Tablets As Good As Injections? medicalweightlosscentersofamerica.com Are vitamin B12 injections more effective than vitamin B12 tablets for treating diabetic nerve damage? Medivizor Vitamin B12 injections deliver high doses of this essential vitamin directly into your bloodstream for better absorption than oral supplements to boost energy, support red blood cell production and maintain nerve function.