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World Anti-Doping Agency (2026) 9
Similarly, although hepatic dysfunction can occur with large niacin doses (1-3 grams daily over months) causing elevated liver enzymes or jaundice, niacinamide at 100 mg is very unlikely to have any adverse effect on the liver
Progressive Symptoms: Anemia, causing shortness of breath, dizziness, and increased heart rate: All of these symptoms may be brought on by a deficit that lowers the synthesis of red blood cells
The buttock: Your upper outer buttocks, or Dorsogluteals, on either side of your body, are common injection sites
Reducing by 50-100mcg often resolves these issues while maintaining effectiveness
A responsible provider should discuss your medical history, current medications, allergy status, baseline B12 levels, the specific form of B12 being administered, and the expected benefits and risks before proceeding with an injection
