K 1 is synthesized by plants, K2 is produced by intestinal bacteria, and K 3, K3 and K4 are artificially synthesized.
Vitamin K is indispensable for liver to synthesize prothrombin (factor 2) and coagulation factors 7,9, 10. When the synthesis of these coagulation factors decreases, the prothrombin time will be prolonged, causing bleeding.
Mothers are advised to eat more foods rich in vitamins, such as yogurt, alfalfa, egg yolk, safflower oil, soybean oil, spinach, cod liver oil, seaweed, especially green vegetables.
Vitamin K 1 injection is terrible for allergic people, because my mother is allergic to it, so I am allergic to it. ....
Also remember not to abuse antibiotics, which will greatly affect the absorption of vitamin K.
It is recommended to eat complementary food, but you must go to the hospital for some tests to make a definite diagnosis. I wish you good health.