Vitamin B Complex Tablets or Capsules

What is this medication?

VITAMIN B COMPLEX (VAHY tuh min B kom pleks) prevents and treats low levels of vitamin B in your body. Vitamin B plays an important role in maintaining the health of your blood cells, brain, heart, immune system, and metabolism. It is often used to improve energy and boost mood.

This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.

COMMON BRAND NAME(S): B Complex with B-12, Balance B-50, ENDUR-B

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What should I tell my care team before I take this medication?

They need to know if you have any of these conditions:

  • Anemia
  • An unusual or allergic reaction to any of the B vitamins, other medications, foods, dyes, or preservatives
  • Pregnant or trying to get pregnant
  • Breast-feeding

How should I use this medication?

Take this medication by mouth. You can take it with or without food. If it upsets your stomach, take it with food. Take it as directed on the label. Do not take it more often than directed.

Contact your care team about the use of this medication in children. Special care may be needed.

Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.

NOTE: This medicine is only for you. Do not share this medicine with others.

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What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for you next dose, take only that dose. Do not take double or extra doses.

What may interact with this medication?

Interactions are not expected.

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

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What should I watch for while using this medication?

See your care team for regular checks on your progress. Remember that vitamin and mineral supplements do not replace the need for good nutrition from a balanced diet.

Stools commonly change color when vitamins and minerals are taken. Notify your care team if this change is alarming or accompanied by other symptoms, like abdominal pain.

What side effects may I notice from receiving this medication?

Side effects that you should report to your care team as soon as possible:

  • Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat
  • High blood sugar (hyperglycemia)—increased thirst or amount of urine, unusual weakness or fatigue, blurry vision
  • Liver injury—right upper belly pain, loss of appetite, nausea, light-colored stool, dark yellow or brown urine, yellowing skin or eyes, unusual weakness or fatigue
  • Pain, tingling, or numbness in the hands or feet

Side effects that usually do not require medical attention (report these to your care team if they continue or are bothersome):

  • Bright yellow urine
  • Diarrhea
  • Facial flushing, redness
  • Fatigue
  • Headache
  • Nausea
  • Upset stomach

This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Where should I keep my medication?

Keep out of the reach of children and pets.

See product label for storage information. Each product may have different instructions. Get rid of any unused medication after the expiration date.

To get rid of medications that are no longer needed or have expired:

  • Take the medication to a medication take-back program. Check with your pharmacy or law enforcement to find a location.
  • If you cannot return the medication, check the label to see if the medication should be thrown out in the garbage or flushed down the toilet. If you are not sure, ask your care team. If it is safe to put in the trash, pour the medication out of the container. Mix the medication with cat litter, dirt, coffee grounds, or other unwanted substance. Seal the mixture in a bag or container. Put it in the trash.

NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.

Copyright ©2024 Elsevier Inc. All Rights Reserved.

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Note: Introduction and Additional Common Questions written and medically approved by Cleveland Clinic professionals.

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