Article in English: Many herbs have been as emmenagogues for centuries. People often believe herbs to be harmless, but they can have side effects that are just as significant as any other type of medication. If you want to try using herbs to bring on your period, it is best to speak with your doctor first. Conduct research and make sure you take no more than the recommended dosage, as some herbs are poisonous at high levels.  Some emmenagogues are also abortifacients, meaning they could cause your body to miscarry if you are pregnant. If there is any chance that pregnancy is the reason your period hasn't come, do not attempt to terminate the pregnancy using herbs. This can be extremely dangerous.  Be especially careful if you already have a medical condition. Herbs could exacerbate your condition or cause dangerous side effects. Vitamin C is thought to be an emmenagogue. This is another word for a substance that helps induce your period. Vitamin C is supposed to help increase the amount of lining in the uterus, helping to increase your chances of getting your period. Some find that taking vitamin C supplements or eating food high in vitamin C makes the uterus contract, bringing on a period.  The recommended daily value of vitamin C is 60 mg. If you decide to take supplements, be sure not to exceed the recommended dosage. Try eating plenty of papaya, bell peppers, broccoli, kiwi, citrus fruits, leafy greens, and tomatoes. According to folklore, parsley can be used to induce a period. Flat and curly-leaf parsley contain apiol and myristicin, substances that are thought to cause the uterus to contract slightly. No scientific research backs this claim, but some women have found drinking parsley tea to be helpful. To enjoy parsley tea:  Wash and chop 1/4 cup of fresh parsley. The fresh variety contains more nutrients than dried parsley, and it makes better-tasting tea.  Boil a cup of water. Pour the water over the parsley and let it steep for five minutes. Strain out the parsley and drink the tea. Turmeric is thought to relieve...

Summary in Vietnamese:
Cẩn thận khi sử dụng các bài thuốc từ thảo mộc. Bổ sung vitamin C. Thêm rau mùi tây vào chế độ dinh dưỡng của bạn. Ăn nghệ. Sử dụng thực phẩm bổ sung có nguồn gốc từ thảo mộc.