Have you heard you should take vitamin K? You may have heard a lot of buzz about vitamin K creams and vitamin K supplements, but you need to make sure this is right for you before you try them.

Your body needs vitamin K to grow properly. Vitamin K is essential for blood clotting. Most people get enough vitamin K from their regular diets and never even need to think about vitamin K. You get vitamin K when you eat animal products (meat, milk, cheese) and leafy greens. You only need trace amounts of vitamin K, so you’re probably getting more than enough from your regular diet.

Of course, if your blood does not clot properly, your doctor may recommend you take vitamin K supplements. This is usually prescribed as a tablet or capsule, but can also be sold as a cream. It is usually prescribed by a doctor and should be taken as prescribed. Newborns are sometimes given injections of vitamin K to correct blood clotting problems.

Sometimes people self-prescribe vitamin K for bruising, dark circles under the eyes, or to improve the effectiveness of cancer treatments. Such self-diagnoses should be discussed with a doctor since vitamin K can interfere with other medications. The study of the effect on vitamin K on cancer treatments is still very new, and the only cancer studied so far is colon cancer. Be careful not to make broad assumptions about the impact of vitamin K quite yet.

You will want to discuss any use of vitamin K with your doctor if you take blood thinners or have any concerns about blood clotting. For example, if you are on oral contraceptives (which can increase chances of blood clots), and are considering taking vitamin K because you feel you are bruising easily or have dark circles under your eyes, you will need to recognize the side effects of vitamin K could outweigh the benefits.

It is in your best interest to consult your physician before taking vitamin K supplements.

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