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In some cases, a doctor may refer a person to a specialist, such as: a nutritionist or dietitian a hematologist, who specializes in treating blood conditions a gastroenterologist, who specializes in treating gastrointestinal (GI) conditions The table below contains the However, a doctor can advise on an individuals specific needs
Dosing may also take place periodically over a period of time, and the dosage may change (increase or decrease) with time
Niacin deficiency is generally rare but can occur in cases of alcoholism, prolonged use of certain drugs such as levodopa and ethionamide, and malabsorptive syndromes, such as Crohns disease, major gastrointestinal surgeries or jejunoileitis (5, 12)
An additional Journal of Clinical Endocrinology study found that normal serum testosterone levels were maintained through SubQ injections
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