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THE MERCK MANUAL MEDICAL LIBRARY: The Merck Manual of Medical Information--Home Edition
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Niacin (nicotinic acid)

VitaminsTables
Niacin

  • deficiency of

  • Symptoms of Nutrient DeficienciesTables
    Niacin: Niacin Deficiency

  • gingivitis with

  • Gingivitis: Gingivitis due to Vitamin Deficiency

  • red tongue with

  • Tongue Disorders: Discoloration

  • excess of

  • Niacin: Niacin Excess

  • in hyperlipoproteinemia

  • Lipid-Lowering DrugsTables

    Niacinamide deficiency

    Hartnup Disease

    Nickel, dermatitis from

    Dermatitis: Contact Dermatitis
    Common Causes of Allergic Contact DermatitisSidebar

    Nicotinamide

    see Niacin (nicotinic acid)

    Nicotine

    see Smoking

    NICU (neonatal intensive care unit)

    What Is a Neonatal Intensive Care Unit?Sidebar

    Niemann-Pick disease

    Lipid Metabolism: Niemann-Pick Disease

    Nifedipine, gingivitis and

    Gingivitis: Drug-Induced Gingivitis

    Night blindness

    Vitamin A: Symptoms
    Symptoms: Night Blindness

    Nightmares

    Parasomnias
    Sleep Problems: Nightmares

    Night terrors

    Parasomnias
    Sleep Problems: Night Terrors and Sleepwalking

    Nilutamide

    Cancer: Hormonal Therapy

    Nipple

  • in breastfeeding

  • Home (What to Expect)

  • discharge from

  • Breast Disorders: Nipple Discharge

  • Paget's disease of

  • Paget's Disease
    Cancer: Types
    Cancer: Treatment
    Cancer: Treatment of Specific Types of Breast Cancer

    Nitazoxanide

    Giardiasis: Prevention and Treatment

    Nitrates

  • in coronary artery disease

  • Angina: Drug Therapy
    Drugs Used to Treat Coronary Artery DiseaseTables

    Nitrazepam, in elderly persons

    Some Drugs With Increased Risk for Older People Tables

    Nitric oxide

    Persistent Pulmonary Hypertension: Treatment

    Nitrites

  • in urine

  • Diagnosis: Urinalysis

    Nitrofurantoin

    AntibioticsTables

  • hepatitis with

  • Chronic Hepatitis: Causes

  • during pregnancy

  • Some Drugs That Can Cause Problems During PregnancyTables

    Nitrogen, in decompression sickness

    Decompression Sickness

    Nitrogen dioxide, inhalation of

    Gas and Chemical Exposure

    Nitrogen narcosis

    Breathing Air Under High PressureSidebar

    Nitroglycerin

    Angina: Drug Therapy
    Drugs Used to Treat Coronary Artery DiseaseTables
    Acute Coronary Syndromes (Heart Attack; Myocardial Infarction; Unstable Angina): Drug Treatment

  • phosphodiesterase inhibitors and

  • Erectile Dysfunction (ED): Drug Treatment

    Nitrous oxide

    Abused Inhalants That Have Medical UsesSidebar

    Nits

    Lice Infestation: Symptoms and Diagnosis

    Nizatidine

  • in elderly persons

  • Some Drugs With Increased Risk for Older People Tables

  • in peptic ulcer

  • Peptic Ulcer: Acid-reducing Drugs
    Drugs Used to Treat Peptic DisordersTables

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