The usual length of menstrual bleeding is four to six days. The usual amount of blood loss per period is 10 to 35 ml. Each soaked normal-sized tampon or pad holds a teaspoon (5ml) of blood. That means it is normal to soak one to seven normal-sized pads or tampons ("sanitary products") in a whole period.
Heavy menstrual bleeding or menorrhagia is a period lasting more than 7 days, or soaking 8 or more tampons or pads in one day.
A number of women suffer from low blood counts or anemia from excessive menstrual blood loss. This can be associated with fatigue, dizziness or inability to exercise.
Treatments will vary depending if the uterus is normal and is being excessively stimulated by hormones or if there are physical abnormalities of the uterus.
For excessive hormones: treatments with oral contraceptives, oral or injected progesterone, antiestrogens, progesterone IUD, dilatation and curettage, Lysteda, endometrial ablation, uterine artery embolization or hysterectomy are all possible treatments
If uterine abnormalities such as polyps or fibroids are found, then anti-estrogen therapy, hysteroscopic (through the cervix) procedure to remove the growth, vaginal or laparoscopic surgery are possible solutions.