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Merck
Manual
Consumer Version
The trusted provider of medical information since 1899
ENGLISH
ESPAÑOL (SPANISH)
Other Languages
Search
Search
A-Z
VIEW PROFESSIONAL VERSION
HOME
HEALTH TOPICS
Common Health Topics
Blood Disorders
Bone, Joint, and Muscle Disorders
Brain, Spinal Cord, and Nerve Disorders
Cancer
Children's Health Issues
Digestive Disorders
Disorders of Nutrition
Drugs
Ear, Nose, and Throat Disorders
Eye Disorders
Fundamentals
Heart and Blood Vessel Disorders
Hormonal and Metabolic Disorders
Immune Disorders
Infections
Injuries and Poisoning
Kidney and Urinary Tract Disorders
Liver and Gallbladder Disorders
Lung and Airway Disorders
Men's Health Issues
Mental Health Disorders
Mouth and Dental Disorders
Older People’s Health Issues
Skin Disorders
Special Subjects
Women's Health Issues
Resources
Videos
Figures
Images
Quizzes
Common Medical Tests
View All Resources
SYMPTOMS
General
Abdomen & Digestive
Bleeding
Brain & Nervous System
Chest & Respiratory
Children's Symptoms
Eye
Genital & Urinary
ALL SYMPTOMS >
EMERGENCIES
Cardiac Arrest
Choking
ALL EMERGENCIES >
DRUG INFO
Drug Information, Search
Drugs by Name, Generic and Brand
Natural Products, Search
Drug Interactions
Pill Identifier
Commonly searched drugs
Aspirin
Metformin
Warfarin
Tramadol
Lactulose
Ranitidine (Withdrawn from US Market)
RESOURCES
Abbreviations
Audio
3D Models
Common Medical Tests
Figures
First Aid
Images
Infographics
Lab Test
Medical Terms
The One-Page Manual of Health
Pronunciations
Quizzes
Self-Assessment Tools
Tables
Videos
Weights & Measures
Podcasts
NEWS
'Spare Tire' Might Up a Man's Prostate Cancer Risk
1 in 20 Older Americans Smoke Pot Regularly, Survey Finds
AHA News: When It Comes to Labor Day Menu Choices, Safety Is Tasty
Being a Jerk Not a Recipe for Getting Ahead at Work
View All News >
View All News >
ABOUT
Overview
History
Editors and the Editorial Process
Publishing and Production Staff
Editorial Board
Contributors
Reviewers
Content Providers
Global Medical Knowledge 2020
FAQ
Contact Us
Health Topics & Chapters
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
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Dietary Supplements
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Dietary Supplements
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Overview of Dietary Supplements
Safety and Effectiveness
Purity and Standardization
Interactions With Drugs
Other Concerns
More Information
Black Cohosh
Medicinal claims
Possible side effects
Possible drug interactions
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Chamomile
Medicinal claims
Possible side effects
Possible drug interactions
More Information
Chondroitin Sulfate
Medicinal claims
Possible side effects
Possible drug interactions
More Information
Chromium
Medicinal claims
Possible side effects
Possible drug interactions
More Information
Coenzyme Q10
Medicinal claims
Possible side effects
Possible drug interactions
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Cranberry
Medicinal claims
Possible side effects
Possible drug interactions
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Creatine
Medicinal claims
Possible side effects
More Information
Dehydroepiandrosterone (DHEA)
Medicinal claims
Possible side effects
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Echinacea
Medicinal claims
Possible side effects
Possible drug interactions
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Feverfew
Medicinal claims
Possible side effects
Possible drug interactions
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Fish Oil
Medicinal claims
Possible side effects
Possible drug interactions
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Garlic
Medicinal claims
Possible side effects
Possible drug interactions
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Ginger
Medicinal claims
Possible side effects
Possible drug interactions
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Ginkgo
Medicinal claims
Possible side effects
Possible drug interactions
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Ginseng
Medicinal claims
Possible side effects
Possible drug interactions
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Glucosamine
Medicinal claims
Possible side effects
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Goldenseal
Medicinal claims
Possible side effects
Possible drug interactions
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Green Tea
Medicinal claims
Possible side effects
Drug interactions
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Kava
Medicinal claims
Possible side effects
Possible drug interactions
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Licorice
Medicinal claims
Possible side effects
Possible drug interactions
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Melatonin
Medicinal claims
Possible side effects
Possible drug interactions
More Information
Milk Thistle
Medicinal claims
Possible side effects
Possible drug interactions
More Information
S
-Adenosyl- L -Methionine (SAMe)
Medicinal claims
Possible side effects
Possible drug interactions
More Information
Saw Palmetto
Medicinal claims
Possible side effects
Possible drug interactions
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St. John’s Wort
Medicinal claims
Possible side effects
Possible drug interactions
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Valerian
Medicinal claims
Possible side effects
Possible drug interactions
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Zinc
Medicinal claims
Possible side effects
Possible drug interactions
More Information