Monitor
Obtain all hematologic parameters, including hemacrit, reticulocyte count, and vitamin B 12, folate, and iron levels, at the beginning of vitamin B 12 treatment. Monitor serum potassium levels during therapy.
Periodically monitor serum B 12 levels to establish adequacy of therapy. Monitor vitamin B 12 concentrations and CBC 1 month after starting treatment and at 3- to 6-months intervals thereafter. Patients with declining or abnormally low vitamin B 12 concentrations despite maximal doses of intranasal treatment should be switched to IM vitamin B 12 .
Warnings
Fetal harm: Continuous administration of Neogadine (Magnesium Chloride) sulfate beyond 5 to 7 days to pregnant women can lead to hypocalcemia and bone abnormalities in the developing fetus. These bone abnormalities include skeletal demineralization and osteopenia. In addition, cases of neonatal fracture have been reported. The shortest duration of treatment that can lead to fetal harm is not known. Neogadine (Magnesium Chloride) sulfate should be used during pregnancy only if clearly needed. If Neogadine (Magnesium Chloride) sulfate is given for treatment of preterm labor, the woman should be informed that the efficacy and safety of such use have not been established and that use of Neogadine (Magnesium Chloride) sulfate beyond 5 to 7 days may cause fetal abnormalities.
Aluminum toxicity: This product contains aluminum that may be toxic. Aluminum may reach toxic levels with prolonged parenteral administration if kidney function is impaired. Premature neonates are particularly at risk because their kidneys are immature, and they require large amounts of calcium and phosphate solutions, which contain aluminum.
Parenteral use in the presence of renal insufficiency may lead to Neogadine (Magnesium Chloride) intoxication. Intravenous use in the eclampsia should be reserved for immediate control of life-threatening convulsions.