According to the American Academy of Family Physicians, chasteberry has been shown to relieve breast discomfort and menstrual irregularities. http://www.aafp.org/afp/2005/0901/p821.html

Chasteberry was added to Period Vitamin because it’s also known to reduce fluid retention, headaches, mood swings (including irritability and depression) and acne that’s caused by fluctuations in the menstrual cycle.

An article by esteemed website LiveStrong.com points out that cranberry can be used to treat PMS, as its known to decrease water retention and relieve painful period cramps. (http://www.livestrong.com/article/25574-foods-pms/)

Cranberry was also added to Period Vitamin because it’s been shown to effectively prevent bacteria from adhering to the wall of the bladder, which reduces the likelihood of infections during the menstrual cycle.

In an article published by researchers at the University of Maryland Medical Center, white willow bark can be used to treat pain and inflammation, especially those experienced during the menstrual cycle. White willow bark can also boost the immune system. (http://www.umm.edu/altmed/articles/willow-bark-000281.htm)

White willow bark was added to Period Vitamin because it treats chronic pain from period cramps, headaches, muscle aches, and other pains associated with the menstrual cycle.

In a study conducted by the Department of Obstetrics and Gynecology at Tufts Medical Center at Tufts University, Dong Quai has been shown to relieve menstrual cramping. It’s a Chinese herb that’s been used by women for thousands of years to relieve severe period pains. (http://www.ncbi.nlm.nih.gov/pubmed/22139538)

Dong Quai was added to Period Vitamin because it’s also been shown to regulate fluctuating hormones.

In a study conducted by the faculty of Food Technology and Biotechnology at the University of Zagreb in Croatia, red raspberry has been shown to filter excess hormones out of the blood stream. This can help relieve muscle spasms and uterine cramping associated with the menstrual cycle. (http://www.ncbi.nlm.nih.gov/pubmed/22082102)

Red Raspberry was also added to Period Vitamin because it contains vitamins and minerals like B3 (Niacin), C and Manganese, all of which gives you healthy-looking skin to combat acne associated with your menstrual cycle.

According to multiple studies compiled in an overview by US National Library of Medicine and National Institutes of Health, black cohosh contains a phytoestrogen that mimics estrogen, which helps to combat period acne and mood swings associated with fluctuating hormones. (http://www.ncbi.nlm.nih.gov/pubmed/22972105)

Black cohosh was added to Period Vitamin to help reduce the irritability and mood swings that occur during your menstrual cycle. Black cohosh can also help decrease the amount of breakouts you get during your menstrual cycle.

According to multiple studies compiled in an overview by WebMD, damiana has been shown to improve a woman’s libido. This can be especially helpful during the menstrual cycle, when a woman experiences a decrease in desire. (http://www.webmd.com/drugs/drug-17258-Damiana+Leaf+Oral.aspx?drugid=17258&drugname=Damiana+Leaf+Oral&source=0)

Damiana was also added to Period Vitamin because it increases energy levels. Damiana has also been shown to relieve depression associated with a woman’s menstrual cycle.

According to several studies compiled by the US National Library of Medicine and the National Institutes of Health, teas made from cramp bark – a tried-and-true holistic herb used to treat menstrual pain – can reduce PMS cramping in addition to anxieties associated with severe premenstrual syndrome. (http://www.ncbi.nlm.nih.gov/pubmed?term=cramp%20bark)

Cramp bark was also added to Period Vitamin because it can relax the uterine muscles, which contract to shed the blood lining. This effectively relieves moderate to severe cramping.

According to the Mayo Clinic, calcium can effective treat many premenstrual symptoms. It has also been shown to reduce the physical and psychological symptoms of PMS. (http://www.mayoclinic.com/health/premenstrual-syndrome/DS00134/DSECTION=alternative-medicine)

Calcium was added to Period Vitamin because it can reduce bloating, cramping and other pains associated with PMS. Additionally, long-term calcium intake can greatly reduce the risk of osteoporosis.

According to the Mayo Clinic, magnesium can reduce fluid retention, breast tenderness, and bloating in women with premenstrual syndrome. Additionally, it can help muscles relax, which helps minimize cramping. (http://www.mayoclinic.com/health/premenstrual-syndrome/DS00134/DSECTION=alternative-medicine)

Magnesium was also added to Period Vitamin because your body needs it to efficiently absorb calcium. This increases the efficacy of Period Vitamin.

According to Discovery Fit and Health, iron is an essentially part of treating premenstrual syndrome. When women go through their menstrual cycles, they experience low iron levels. This can cause fatigue, irritability, and a host of other painful PMS symptoms. (http://health.howstuffworks.com/wellness/women/menstrual/pms.htm)

Iron was added to Period Vitamin because it can help restore the energy levels that are depleted as a result of blood loss during the menstrual cycle.

In a study conducted by the Department of Obstetrics and Gynecology at the Baskent University Faculty of Medicine in Turkey, women who increased their folic acid intake over the course of 12 weeks showed a remarkable improvement in their PMS symptoms. (http://www.ncbi.nlm.nih.gov/pubmed/15790610)

Folic acid was added to Period Vitamin to help reduce common PMS symptoms like fatigue, mood swings, and uterine cramping.

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According to the Department of Biology at the University of Science and Technology in Norway, Vitamin A has been shown to regulate hormonal fluctuations associated with the menstrual cycle (http://www.ncbi.nlm.nih.gov/pubmed/23030655).

Vitamin A was added to Period Vitamin because it can help stabilize hormonal fluctuations, which can reduce mood swings, PMS-related acne, and weight gain.

According to the Department of Public Health at the University of Massachusetts Amherst, Vitamin B can help reduce common premenstrual symptoms like cramping, bloating, and headaches. (http://www.ncbi.nlm.nih.gov/pubmed/21346091)

Vitamin B was added to Period Vitamin in order to help reduce these common PMS symptoms throughout the entire menstrual cycle.

According to the Cleveland Clinic, Vitamin C is an essential vitamin that women should consume during their menstrual cycles. This is because Vitamin C helps eliminate chronic fatigue as well as reduces the risk of ovarian and breast cancers. (my.clevelandclinic.org/disorders/…/hic_pms_and_pmdd.aspx)

Vitamin C was also added to Period Vitamin because it helps your body control heavy bleeding. Vitamin C has also been shown to help the body absorb some of the major ingredients in Period Vitamin.

According to the Mayo Clinic, taking 400 mg of Vitamin E may ease PMS symptoms by reducing the production of prostaglandins, hormone-like substances that cause cramps and breast tenderness.