3-rx.comCustomer Support
HomeAbout UsFAQContactHelp
News Center
Health Centers
Medical Encyclopedia
Drugs & Medications
Diseases & Conditions
Medical Symptoms
Med. Tests & Exams
Surgery & Procedures
Injuries & Wounds
Diet & Nutrition
Special Topics

\"$alt_text\"');"); } else { echo"\"$alt_text\""; } ?>

You are here : 3-RX.com > Drugs & Medications > Detailed Drug Information (USP DI) > Vitamin K

Vitamin K (Systemic)

Description and Brand Names | Before Using | Proper Use | Precautions | Side Effects

  • Antidote, to drug-induced hypoprothrombinemia - Menadiol; Phytonadione
  • Antihemorrhagic - Phytonadione
  • Nutritional supplement, vitamin, prothrombogenic - Menadiol; Phytonadione

Vitamins (VYE-ta-mins) are compounds that you must have for growth and health. They are needed in only small amounts and usually are available in the foods that you eat. Vitamin K is necessary for normal clotting of the blood.

Vitamin K is found in various foods including green leafy vegetables, meat, and dairy products. If you eat a balanced diet containing these foods, you should be getting all the vitamin K you need. Little vitamin K is lost from foods with ordinary cooking.

If you are taking anticoagulant medicine (blood thinners), the amount of vitamin K in your diet may affect how well these medicines work. Your doctor or health care professional may recommend changes in your diet to help these medicines work better.

Lack of vitamin K is rare but may lead to problems with blood clotting and increased bleeding. Your doctor may treat this by prescribing vitamin K for you.

Vitamin K is routinely given to newborn infants to prevent bleeding problems.

This medicine is available only with your doctor's prescription, in the following dosage forms:

  • Phytonadione
    • Tablets (U.S.)
  • Phytonadione
    • Injection (U.S. )

Brand Names

Some commonly used brand names are:

In the U.S. -

  • AquaMEPHYTON 2
  • Mephyton 2


For quick reference, the following medicines are numbered to match the corresponding brand names.

Other commonly used names are: phylloquinone , phytomenadione , vitamin K 1 , and vitamin K 4 .

This information applies to the following medicines:
1. Menadiol (men-a-DYE-ole)*†
2. Phytonadione (fye-toe-na-DYE-one)†‡§
* Not commercially available in the U.S.
† Not commercially available in Canada
‡ Generic name product may be available in the U.S.
§ Generic name product may be available in Canada

† Not commercially available in Canada.


Next section


Vitamin K: Before Using

\"$alt_text\"');"); } else { echo"\"$alt_text\""; } ?>

Home | About Us | FAQ | Contact | Advertising Policy | Privacy Policy | Bookmark Site