Health Library

Worried about making the right decisions for your health and well-being? We can help.

Search our extensive online health library to find the resources you need to make informed decisions and improve your health. You'll find up-to-date and evidenced-based information with easy-to-understand explanations of medical conditions, symptoms, tests and treatments for thousands of topics.

Learning Centers
Health Topics A-Z

Learning Centers

Health Topics A-Z

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E. Coli Infection From Food or Water

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Ear Canal Problems (Swimmer's Ear) Symptom
Ear Examination Medical Test
Ear Infection: Should I Give My Child Antibiotics? Decision Point
Ear Infections
Ear Infections (Homeopathy) Alternative Medicine
Ear Infections in Children
Ear Problems and Injuries, Age 11 and Younger Symptom
Ear Problems and Injuries, Age 12 and Older Symptom
Ear Problems: Should My Child Be Treated for Fluid Buildup in the Middle Ear? Decision Point
Ear Tube Surgery Surgery Overview
Ear, Nose, and Throat Learning Center
Early Signs of Pregnancy
Earwax Symptom
Eating Disorders (Holistic) Alternative Medicine
Eating Disorders: Cultural and Social Factors
Eating Disorders: Feeling Better About Yourself
Eating Disorders: Malnutrition Tests
Eating Disorders: Stopping Negative Thoughts
Eating Disorders: Things That Put a Person at Risk
Eating for Gestational Diabetes
Eating Journal
Eating Out When You Have Diabetes
Eating Protein
Eating Right When You Have More Than One Health Problem
Eating Well During Cancer Treatment

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Ebola or Marburg Virus Infection

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Ecallantide Injection 10 mg/mL (1 mL)
Echinacea Alternative Medicine
Echocardiogram Medical Test
Echocardiogram for Children
Eclampsia (Seizures) and Preeclampsia
Econazole Alternative Medicine
Econazole Topical Cream 1%
Econazole Topical Foam 1%
Ecstasy (MDMA)
Ectopic Pregnancy
Eculizumab Injection 10 mg/mL (30 mL)
Eczema (Atopic Dermatitis)
Eczema (Holistic) Alternative Medicine
Eczema (Homeopathy) Alternative Medicine
Eczema: Taking Care of Your Skin Actionset

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Edaravone Injection 0.3 mg/mL (100 mL)
Edema (Holistic) Alternative Medicine
Edoxaban Oral Tablet 15 mg, 30 mg, 60 mg
Educational Rights for Children With Disabilities

EE

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EES Oral Suspension 200 mg/5 mL

EF

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EG

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Egg Protein Alternative Medicine
Egg Protein for Sports & Fitness Alternative Medicine
Egg Protein for Weight Control Alternative Medicine
Egocentric and Magical Thinking

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Elacestrant Alternative Medicine
Elagolix Oral Tablet 150 mg, 200 mg
Elbasvir/Grazoprevir Oral Tablet 50 mg/100 mg
Elbow Bursitis and Tendon Injury: Preventing Pain
Elbow Injuries Symptom
Elbow Pain: Other Causes of Pain
Elbow Problems, Noninjury Symptom
Elder Abuse
Elderberry Alternative Medicine
Eldercare Mediation
Elecampane Alternative Medicine
Electrical Cardioversion for a Fast Heart Rate
Electrical Cardioversion for Atrial Fibrillation
Electrical Nerve Stimulation for Chronic Pain
Electrical Shock or Burn
Electrical Stimulation for Urinary Incontinence
Electrical System of the Heart
Electrocardiogram (EKG) Medical Test
Electrocardiogram (EKG) for Children
Electrocautery for Genital Warts Surgery Overview
Electroconvulsive Therapy (ECT)
Electroconvulsive Therapy (ECT)
Electroencephalogram (EEG) Medical Test
Electrolysis for Removing Hair
Electrolyte Panel
Electromyogram (EMG) and Nerve Conduction Studies Medical Test
Electronic Medical and Health Records
Electronystagmography (ENG) Medical Test
Electrophysiology (EP) Study Medical Test
Electrophysiology Tests for the Eyes Medical Test
Eletriptan Alternative Medicine
Eletriptan Oral Tablet 20 mg, 40 mg
Eleuthero Alternative Medicine
Eleuthero for Sports & Fitness Alternative Medicine
Elexacaftor/Ivacaftor/Tezacaftor and Ivacaftor Oral Tablet Pack 100 mg/75 mg/50 mg and 150 mg
Elotuzumab Injection 300 mg, 400 mg
Eltrombopag Oral Tablet 12.5 mg, 25 mg, 50 mg, 75 mg
Eltrombopag Powder for Oral Suspension 25 mg
EluRyng Vaginal System 0.12 mg/0.015 mg per 24 Hours (21 day)
Eluxadoline Oral Tablet 75 mg, 100 mg
Elvitegr-Cobicist-Emtric-Tenof Alternative Medicine
Elvitegravir Alternative Medicine
Elvitegravir/Cobicistat/Emtricitabine/Tenofovir Disoproxil Fumarate Oral Tablet 150 mg/150 mg/200 mg/300 mg

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Enalapril Alternative Medicine
Enalapril Oral Solution 1 mg/mL
Enalapril Oral Tablet 2.5 mg, 5 mg, 10 mg, 20 mg
Enalapril-Hydrochlorothiazide Alternative Medicine
Enalapril/Hydrochlorothiazide Oral Tablet 5 mg/12.5 mg, 10 mg/25 mg, 20 mg/12.5 mg
Enalaprilat Injection 1.25 mg/mL (1 mL), (2 mL)
Enasidenib Oral Tablet 50 mg, 100 mg
Encephalitis
Encorafenib Oral Capsule 50 mg, 75 mg
Encouraging Language Development in Your Preschooler
End-Stage Renal Disease
Endocarditis
Endometrial (Uterine) Cancer
Endometrial Ablation Surgery Overview
Endometrial Ablation
Endometrial Biopsy Medical Test
Endometrial Cancer Prevention (PDQ®): Prevention - Health Professional Information [NCI] National Cancer Institute
Endometrial Cancer Prevention (PDQ®): Prevention - Patient Information [NCI] National Cancer Institute
Endometrial Cancer Screening (PDQ®): Screening - Health Professional Information [NCI] National Cancer Institute
Endometrial Cancer Screening (PDQ®): Screening - Patient Information [NCI] National Cancer Institute
Endometrial Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Endometrial Cancer Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Endometriosis
Endometriosis (Holistic) Alternative Medicine
Endometriosis: Should I Have a Hysterectomy and Oophorectomy? Decision Point
Endometriosis: Should I Use Hormone Therapy? Decision Point
Endoscopic Carpal Tunnel Surgery Surgery Overview
Endoscopic Retrograde Cholangiopancreatogram (ERCP) Medical Test
Endoscopic Sinus Exam Medical Test
Endoscopic Sinus Surgery: Before Your Surgery
Endoscopic Sinus Surgery: Returning Home
Endoscopic Surgery for Sinusitis Surgery Overview
Endoscopic Treatment for Variceal Bleeding
Endovascular Repair for Abdominal Aortic Aneurysm
Energy and Sports Drinks
Enfortumab Vedotin-Ejfv Alternative Medicine
Enfortumab Vedotin-ejfv Injection 20 mg, 30 mg
Enfuvirtide Alternative Medicine
Enfuvirtide Injection 90 mg
Enjoying Life When You Have Heart Failure
Enlarged Prostate: Bathroom Tips
Enlarged Prostate: Herbal Therapy
Enlarged Prostate: Should I Have Surgery? Decision Point
Enlarged Prostate: Should I Take Medicine? Decision Point
Enoxaparin Injectable Solution 300 mg/3 mL (vial)
Enoxaparin Prefilled Syringe 30 mg/0.3 mL, 40 mg/0.4 mL, 60 mg/0.6 mL, 80 mg/0.8 mL, 100 mg/mL (1 mL), 120 mg/0.8 mL, 150 mg/mL (1 mL)
Entacapone Oral Tablet 200 mg
Entecavir Alternative Medicine
Entecavir Oral Solution 0.05 mg/mL
Entecavir Oral Tablet 0.5 mg, 1 mg
Enterovirus D68 (EV-D68)
Entrectinib Alternative Medicine
Entrectinib Oral Capsule 100 mg, 200 mg
Environmental Health Learning Center
Environmental Illness
Enzalutamide Alternative Medicine
Enzalutamide Oral Capsule 40 mg

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Eosinophilic Esophagitis

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ER

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Eravacycline Alternative Medicine
Eravacycline Injection 50 mg, 100 mg
Erdafitinib Oral Tablet 3 mg, 4 mg, 5 mg
Erectile Dysfunction (Holistic) Alternative Medicine
Erection Problems (Erectile Dysfunction)
Erection Problems: Relationships and Life Events Matter
Erection Problems: Should I Take Medicine? Decision Point
Erection Problems: Should I Try Inserted or Injected Medicines? Decision Point
Erenumab-aooe Auto-Injector 70 mg/mL (1 mL), 140 mg/mL (1 mL)
Ergoloid Mesylates, USP Oral Tablet 1 mg
Ergonomics: Exercises to Do While Sitting
Ergonomics: Setting Up Your Work Area
Ergonomics: Using Your Computer
Ergotamine Tartrate Sublingual Tablet 2 mg
Ergotamine-Caffeine Alternative Medicine
Ergotamine-Phenobarb-Belladon Alternative Medicine
Eribulin Alternative Medicine
Eribulin Injection 0.5 mg/mL (2 mL)
Erlotinib Alternative Medicine
Erlotinib Oral Tablet 25 mg, 100 mg, 150 mg
Ertapenem Alternative Medicine
Ertapenem Powder for Injectable Solution 1 gm (vial)
Ertugliflozin Oral Tablet 5 mg, 15 mg
Ertugliflozin/Metformin Oral Tablet 2.5 mg/500 mg, 2.5 mg/1000 mg, 7.5 mg/500 mg, 7.5 mg/1000 mg
Ertugliflozin/Sitagliptin Oral Tablet 5 mg/100 mg, 15 mg/100 mg
Ery-Tab Delayed Release Oral Tablet 333 mg
Erythromycin Alternative Medicine
Erythromycin Delayed Release Oral Capsule 250 mg
Erythromycin Delayed Release Oral Tablet 250 mg, 333 mg, 500 mg
Erythromycin Ethylsuccinate Alternative Medicine
Erythromycin Ethylsuccinate Oral Suspension 200 mg/5 mL
Erythromycin Ethylsuccinate Oral Tablet 400 mg
Erythromycin Lactobionate Alternative Medicine
Erythromycin Lactobionate Injection 500 mg
Erythromycin Medicated Pad 2%
Erythromycin Ophthalmic Ointment 0.5%
Erythromycin Stearate Alternative Medicine
Erythromycin Stearate Oral Tablet 250 mg, 500 mg
Erythromycin Topical Gel 2%, 4%
Erythromycin Topical Solution 2%
Erythromycin with Ethanol Alternative Medicine
Erythromycin-Sulfisoxazole Alternative Medicine

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Escitalopram Alternative Medicine
Escitalopram Oral Solution 5mg/5mL
Escitalopram Oral Tablet 5 mg, 10 mg, 20 mg
Esketamine Nasal Spray 140 mg/mL (0.2 mL - 2 Pack), (0.2 mL - 3 Pack)
Eslicarbazepine Alternative Medicine
Eslicarbazepine Oral Tablet 200 mg, Tablet Pack 400 mg (7)/800 mg (7), Oral Tablet 400 mg, Oral Tablet 600 mg, Oral Tablet 800 mg
Esmolol Injection 10 mg/mL (10 mL), 10 mg/mL (250 mL), 20 mg/mL (100 mL)
Esomeprazole Alternative Medicine
Esomeprazole Delayed Release Oral Capsule 20 mg
Esomeprazole Delayed Release Oral Capsule 40 mg
Esomeprazole Delayed Release Oral Tablet 20 mg
Esomeprazole Granules for Delayed Release Oral Suspension 10 mg, 20 mg, 40 mg
Esomeprazole Granules for Delayed Release Oral Suspension 2.5 mg
Esomeprazole Granules for Delayed Release Oral Suspension 5 mg
Esomeprazole Injection 40 mg
Esophageal Cancer Prevention (PDQ®): Prevention - Health Professional Information [NCI] National Cancer Institute
Esophageal Cancer Prevention (PDQ®): Prevention - Patient Information [NCI] National Cancer Institute
Esophageal Cancer Screening (PDQ®): Screening - Health Professional Information [NCI] National Cancer Institute
Esophageal Cancer Screening (PDQ®): Screening - Patient Information [NCI] National Cancer Institute
Esophageal Cancer Treatment (Adult) (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Esophageal Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Esophageal Spasm
Esophagitis
Esophagus Tests Medical Test
Essential Tremor
Essiac/Flor Essence (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI] National Cancer Institute
Essiac/Flor Essence (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI] National Cancer Institute
Est Estrogens-Methyltest Alternative Medicine
Establishing Limits With Your School-Age Child
Estazolam Alternative Medicine
Estazolam Oral Tablet 1 mg, 2 mg
Esterified Estrogens Alternative Medicine
Estimating the Size of a Burn
Estradiol Alternative Medicine
Estradiol 84 HR Transdermal Patch 0.00104 mg/HR, 00156 mg/HR, 00208 mg/HR, 00313 mg/HR, 00417 mg/HR
Estradiol Acetate Alternative Medicine
Estradiol Cypionate Alternative Medicine
Estradiol cypionate Injectable Solution 5 mg/mL
Estradiol Oral Tablet 0.5 mg, 1 mg, 2 mg
Estradiol Topical Gel 0.1% (250 mg), (500 mg), (750 mg), (1 gm), (1.25 gm)
Estradiol Topical Spray 1.7%
Estradiol Transdermal Gel 0.06%
Estradiol Vaginal Cream 0.1 mg/mL
Estradiol Vaginal Insert 10 mcg
Estradiol Vaginal Insert 4 mcg, 4 mcg (Maintenance Pack), 4 mcg (Starter Pack), 10 mcg (Maintenance Pack), 10 mcg (Starter Pack)
Estradiol Vaginal Ring 0.05 mg/24 hour (90 Day), 1 mg/24 hour (90 Day)
Estradiol Vaginal Ring 7.5 mcg/24 hour
Estradiol Valerate Alternative Medicine
Estradiol Valerate Injectable Solution 10 mg/mL, 20 mg/mL, 40 mg/mL
Estradiol Valerate-Dienogest Alternative Medicine
Estradiol Weekly Transdermal Patch 0.00104 mg/hr
Estradiol Weekly Transdermal Patch 0.00156 mg/hr (0.037 mg/24 hr)
Estradiol Weekly Transdermal Patch 0.00208 mg/hr (0.050 mg/24 hr)
Estradiol Weekly Transdermal Patch 0.0025 mg/hr (0.060 mg/24 hr)
Estradiol Weekly Transdermal Patch 0.00312 mg/hr (0.075 mg/24 hr)
Estradiol Weekly Transdermal Patch 0.00417 mg/hr (0.01 mg/24 hr)
Estradiol-Drospirenone Alternative Medicine
Estradiol-Levonorgestrel Alternative Medicine
Estradiol-Norethindrone Acetate Alternative Medicine
Estradiol-Norgestimate Alternative Medicine
Estradiol-Progesterone,Micron Alternative Medicine
Estradiol/Levonorgestrel Weekly Transdermal Patch 0.045 mg/0.015 mg per day
Estradiol/Norethindrone 28 Day Oral Tablet Pack 0.5 mg/0.1 mg, 28 Day Oral Tablet Pack 1 mg/0.5 mg, Oral Tablet 0.5 mg/0.1 mg, Oral Tablet 1 mg/0.5 mg
Estradiol/Norethindrone Twice Weekly Transdermal Patch 0.05 mg/0.14 mg per day, 25 mg per day
Estramustine Alternative Medicine
Estramustine Oral Capsule 140 mg
Estrogen Test Medical Test
Estrogens, Conjugated (USP) Oral Tablet 0.3 mg, 0.45 mg, 0.625 mg, 0.9 mg, 1.25 mg
Estrogens, Conjugated Vaginal Cream 0.625 mg/mL
Estrogens, conjugated/Medroxyprogesterone Acetate Oral Tablet 0.3 mg/1.5 mg, (28 Day Pack)
Estrogens, Esterified (USP) Oral Tablet 0.3 mg, 0.625 mg, 1.25 mg, 2.5 mg
Estrogens, Esterified (USP)/Methyltestosterone Oral Tablet 0.625 mg/1.25 mg, 1.25 mg/2.5 mg
Estropipate Alternative Medicine
Eszopiclone Oral Tablet 1 mg, 2 mg, 3 mg

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EU

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Eucalyptus Alternative Medicine
Eucalyptus for Sports & Fitness Alternative Medicine

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EW

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Ewing Sarcoma and Undifferentiated Small Round Cell Sarcomas of Bone and Soft Tissue Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Ewing Sarcoma Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute

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Examining Your Beliefs to Manage Stress
Excision of Nonmelanoma Skin Cancer Surgery Overview
Excisional Biopsy for Abnormal Cervical Cell Changes Surgery Overview
Exemestane Alternative Medicine
Exemestane Oral Tablet 25 mg
Exenatide Auto-Injector 2.35 mg/ mL (0.85 mL)
Exenatide Pen Injector 2 mg/0.65 mL
Exenatide Pen Injector 5 mcg, 10 mcg
Exercise and Fibromyalgia
Exercise and Osteoarthritis
Exercise and Physical Activity Ideas
Exercise During Pregnancy
Exercise Electrocardiogram (EKG) Medical Test
Exercise Electrocardiogram (Stress Test)
Exercise for Rheumatoid Arthritis
Exercise Helps Maggie Stay at a Healthy Weight
Exercise Planning Form
Exercise-Induced Asthma
Exercises After Mastectomy
Exercises for Arm and Wrist
Exercises for Heel Pain or Tightness
Exercising Safely With Arthritis
Exercising to Prevent a Stroke
Exercising While Sitting Down
Expert: Be Active to Help Your Back Heal
Exposure Therapy
External Cephalic Version for Breech Position
Extragonadal Germ Cell Tumors Treatment (PDQ®): Treatment - Health Professional Information [NCI] National Cancer Institute
Extragonadal Germ Cell Tumors Treatment (PDQ®): Treatment - Patient Information [NCI] National Cancer Institute
Extremity X-Ray Medical Test

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Eye Anatomy and Function
Eye Care Specialists
Eye Flushing
Eye Injuries Symptom
Eye Injuries Caused by Ultraviolet (UV) Light
Eye Injuries: Blow to the Eye
Eye Injury: First Aid for a Black Eye
Eye Injury: First Aid for Chemical Burns
Eye Injury: First Aid for Heat Burns
Eye Injury: First Aid for Minor Cuts
Eye Irritation (Homeopathy) Alternative Medicine
Eye Problems and Blood in the Eye
Eye Problems in Children: Signs to Look For
Eye Problems, Noninjury Symptom
Eye Problems: Changes in Your Pupils
Eye Problems: Using Eyedrops and Eye Ointment Actionset
Eye Protection for Work and Sports
Eye Strain and Eye Injuries (Homeopathy) Alternative Medicine
Eyebright Alternative Medicine
Eyeglass Prescriptions
Eyelid Problems
Eyes and Vision Learning Center

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Ezetimibe Oral Tablet 10 mg
Ezetimibe-Atorvastatin Alternative Medicine
Ezetimibe-Simvastatin Alternative Medicine
Ezetimibe/Simvastatin Oral Tablet 10 mg/10 mg, 20 mg, 40 mg, 80 mg

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Health Library

Worried about making the right decisions for your health and well-being? We can help.

Learning Centers

Health Topics A-Z

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Symptom Checker

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