On 20 april
b12 was 288, got 4x 1500 mcg shot and 30 tablet of b12 1500mcg, on 15 june b12 level are 1823... i have 2 questions 1st did b12 supplement my level in blood only which in reality if i take 5 week no supplement to see real value in blood, 2nd what coure of treament should i take is 1500 mcg daily can be consumed without side effect.