Bangkok Hospital
Caret Right
Search
CTA Curve
Find doctors icon
Find doctors
Appointments icon
Appointments
Contact icon
Contact
Call undefined
Menu
  • Select Hospital

  • Language & Currency

Doctor not found
Doctor not found
Doctor not found
Doctor not found
Bangkok Hospital
Contact us
View on Google Maps
    Privacy Policy

    |

    Cookie Policy

    Copyright © 2026 Bangkok Hospital. All right reserved


    Network Hospitals Directory
    MEMBER OFBDMS logo

    Vitamin B Complex — What You Should Know Before Taking It: Benefits & Food Sources

    3 minute(s) read
    Information by
    Bangkok Hospital Pattaya
    Updated on: 24 Mar 2026
    Recommended Packages
    Package Image
    Sleep disorder detection package
    Package Image
    Bright brain, Dementia Screening Package
    Package Image
    Stroke Screening Package
    Vitamin B Complex — What You Should Know Before Taking It: Benefits & Food Sources
    Bangkok Hospital Pattaya
    Updated on: 24 Mar 2026

    What is Vitamin B Complex?

    Vitamin B Complex is a combination of several B vitamins (from B1 to B12, each with its own specific function). A key characteristic of this vitamin group is that they are water-soluble, meaning the body cannot store them for long. Therefore, they must be obtained regularly through food or supplements to support the nervous system, brain function, and energy production.

    What are Key Benefits of Vitamin B Complex?

    Regular intake of Vitamin B Complex supports overall health in many ways:

    • Converts food into energy and reduces fatigue
    • Enhances focus, supports brain health, and works with the nervous system
    • Maintains healthy skin, hair, and nails — keeping them strong and less brittle
    • Supports red blood cell production and reduces the risk of anemia
    • Aids in cell repair and body growth

    What is the Role of Each B Vitamin?

    Vitamin B1 (Thiamine)

    • Converts carbohydrates into energy
    • Supports nervous system function
    • Deficiency risks numbness and muscle weakness

    Vitamin B2 (Riboflavin)

    • Promotes healthy skin and eyes
    • Aids in protein and fat metabolism

    Vitamin B3 (Niacin)

    • Plays a role in energy metabolism
    • Supports digestion and blood circulation

    Vitamin B5 (Pantothenic Acid)

    • Involved in the production of certain hormones
    • Helps the body use energy from fat

    Vitamin B6 (Pyridoxine)

    • Supports the production of neurotransmitters such as serotonin and dopamine
    • Boosts the immune system and brain function
    • Deficiency may cause depression, numbness in hands and feet, or irritability

    Vitamin B7 (Biotin)

    • Promotes healthy hair and skin
    • Involved in protein and fat metabolism

    Vitamin B9 (Folic Acid)

    • Essential for new cell formation and red blood cell production
    • Critical for fetal development during pregnancy

    Vitamin B12 (Cobalamin)

    • Plays a role in red blood cell production
    • Supports nervous system function and prevents cognitive decline
    • Deficiency may cause memory loss and numbness throughout the body

    Who Should Consider Taking Vitamin B Complex?

    • Older adults with reduced nutrient absorption
    • Those experiencing chronic stress or lack of sleep
    • Regular alcohol drinkers
    • Those with unbalanced diets, such as vegetarians
    • Those with digestive or absorption issues

    How Do B Vitamins Support Your Brain & Nervous System?

    Brain and nervous system function rely on several B vitamins working together:

    • B1 → Helps nerve cells produce energy from glucose
    • B6 → Produces brain chemicals that regulate mood and sleep
    • B9 → Essential for DNA synthesis and fetal nervous system development
    • B12 → Protects nerves by forming the myelin sheath

    Foods Rich in Vitamin B Complex

    Vitamin

    Food Sources

    B1

    Brown rice, sunflower seeds, pork

    B2

    Eggs, milk, liver, mushrooms

    B3

    Fish, chicken, peanuts

    B5

    Egg yolks, whole grains, mushrooms

    B6

    Bananas, salmon, corn

    B7

    Nuts, egg yolks, cauliflower

    B9

    Green leafy vegetables, citrus fruits, folate-fortified cereals

    B12

    Beef, fish, seafood (found only in animal products)

    Recommended Daily Intake for Adults

    Vitamin

    Amount (RDI/day)

    Unit

    B1

    1.1–1.2

    mg

    B2

    1.1–1.3

    mg

    B3

    14–16

    mg NE

    B5

    5

    mg

    B6

    1.3–1.7

    mg

    B7

    30

    µg

    B9

    400

    µg DFE

    B12

    2.4

    µg

    Summary

    Vitamin B Complex is an essential nutrient that supports energy production, brain and nervous system health, and helps prevent anemia. Insufficient intake can affect health in many ways. Choosing foods rich in B vitamins or supplementing with a quality supplement is a great way to keep your body functioning at its best.

    For more information, please contact

    Neuroscience Center

    E building, 2nd floor

    Monday - Sunday
    8:00 am - 7:00 pm

    +66 3825 9986

    [email protected]

    Related Doctors

    See all doctors

    Packages & Promotions

    Sleep disorder detection packageSleep disorder detection package
    Sleep disorder detection package

    12,900 Baht

    Detail
    Bright brain, Dementia Screening PackageBright brain, Dementia Screening Package
    Bright brain, Dementia Screening Package

    10,000 Baht

    Detail
    Stroke Screening PackageStroke Screening Package
    Stroke Screening Package

    17,000 Baht

    19,900 Baht

    Detail
    More packages

    Health Info

    More health info

    Health Info

    The Silent Threat Behind Headaches Image
    The Silent Threat Behind Headaches
    NAVIGATOR Innovation: Brain Surgery Navigation System – Enhancing Precision and Safety in Neurosurgery Image
    NAVIGATOR Innovation: Brain Surgery Navigation System – Enhancing Precision and Safety in Neurosurgery
    Stroke: Treatment and Care Guidelines for Patients Image
    Stroke: Treatment and Care Guidelines for Patients
    More health info