Many women experience a variety of unpleasant symptoms in the week or two before menstruating. These include irritability, anger, headaches, anxiety, depression, fatigue, fluid retention, and breast tenderness. When emotional symptoms related to depression predominate in PMS, the condition is sometimes called premenstrual dysphoric disorder (PMDD). These symptoms undoubtedly result from hormonal changes of the menstrual cycle, but apart from that general statement, medical researchers do not know the cause of PMS or how to treat it.
Conventional treatments for PMS and PMDD include antidepressants, beta-blockers, diuretics, oral contraceptives, and other hormonally active formulations. Of all these, antidepressants in the SSRI family (such as Prozac) are perhaps the most effective.
There is fairly good evidence that calcium supplements can significantly reduce all the major symptoms of PMS. There is also some evidence for the herbs chasteberry and ginkgo. Vitamin B6 is widely recommended as well, but its scientific record is mixed at best.
A large double-blind, placebo-controlled study found positive results using calcium for the treatment of PMS symptoms.1 Participants took 300 mg of calcium (as calcium carbonate) four times daily. Compared to placebo, calcium significantly reduced mood swings, pain, bloating, depression, back pain, and food cravings.
Similar findings were also seen in earlier preliminary studies of calcium for PMS.2,3
For more information, including dosage and safety issues, see the full Calcium article.
The herb chasteberry is widely used in Europe as a treatment for PMS symptoms. More than most herbs, chasteberry is frequently called by its Latin names: Vitex or Vitex agnus-castus.
A double-blind, placebo-controlled study of 178 women found that treatment with chasteberry over 3 menstrual cycles significantly reduced PMS symptoms.8 The dose used was one tablet 3 times daily of a chasteberry dry extract. Women in the treatment group experienced significant improvements in symptoms, including irritability, depression, headache, and breast tenderness.
A double-blind randomized trial of 162 women with PMS compared 8, 20, and 30 mg doses of chasteberry and placebo over the course of three menstrual cycles. Women who took 20mg or 30mg of chasteberry had significantly greater reduction in symptom scores compared to placebo with the greatest reduction in 20 mg dose. There was no significant difference when comparing 8mg to placebo.45
Unfortunately, there is little corroborating evidence as yet for this one well-designed study. A previous double-blind trial compared chasteberry to vitamin B6 (pyridoxine) instead of placebo.9 The two treatments proved equally effective. However, because vitamin B 6 itself has not been shown effective for PMS ( see below), these results mean little.10
Even better evidence indicates that chasteberry can help the cyclic breast tenderness often, but not necessarily, connected with PMS.
For more information, including dosage and safety issues, see the full Chasteberry article.
Vitamin B 6 has been used for PMS for many decades, by both European and US physicians. However, the results of scientific studies are mixed at best. The most recent and best-designed double-blind study, enrolling 120 women, found no benefit.16 In this trial, three prescription drugs were compared against vitamin B 6 (pyridoxine, at 300 mg daily) and placebo. All study participants received 3 months of treatment and 3 months of placebo. Vitamin B 6 proved to be no better than placebo.
Approximately a dozen other double-blind studies have investigated the effectiveness of vitamin B 6 for PMS, but none were well designed, and the results were mixed.17,18 Some books on natural medicine report that the negative results in some of these studies were due to insufficient B 6 dosage, but in reality there was no clear link between dosage and effectiveness.
For more information, including dosage and safety issues, see the full Vitamin B6 article.
One double-blind, placebo-controlled study evaluated the benefits of Ginkgo biloba extract for women with PMS symptoms.20 This trial enrolled 143 women, 18 to 45 years of age, and followed them for two menstrual cycles. Each woman received either the ginkgo extract (80 mg twice daily) or placebo on day 16 of the first cycle. Treatment was continued until day 5 of the next cycle, and resumed again on day 16 of that cycle. As compared to placebo, ginkgo significantly relieved major symptoms of PMS, especially breast pain and emotional disturbance. In another similarly designed trial involving 85 university students, Ginkgo biloba L. significantly reduced PMS symptom severity compared to placebo.43
For more information, including dosage and safety issues, see the full Ginkgo article.
Preliminary studies suggest that magnesium may also be helpful in PMS. A double-blind, placebo-controlled study of 32 women found that magnesium taken from day 15 of the menstrual cycle to the onset of menstrual flow could significantly improve premenstrual mood changes.21
Another small double-blind preliminary study found that regular use of magnesium could reduce symptoms of PMS-related fluid retention.22 In this study, 38 women were given magnesium or placebo for 2 months. The results showed no effect after one cycle, but by the end of two cycles, magnesium significantly reduced weight gain, swelling of extremities, breast tenderness, and abdominal bloating.
For more information, including dosage and safety issues, see the full Magnesium article.
As mentioned earlier, preliminary evidence suggests that combining vitamin B 6 with magnesium might improve the results.24
Several double-blind, placebo-controlled studies, enrolling a total of about 400 women, found evidence that multivitamin and mineral supplements may be helpful for PMS.26-29 It is not clear which ingredients in these supplements played a role.
A product containing grass pollen, royal jelly (a product made by bees), and the pistils (seed-bearing parts) of grass has been proposed for use in PMS. In a double-blind, placebo-controlled crossover trial of 32 women, use of the product for two menstrual cycles appeared to significantly improve PMS symptoms as compared to use of placebo.34 Royal jelly alone was associated with reduced PMS symptoms (when compared to placebo) in a randomized trial of 110 women. The jelly was given daily on the first day of menstruation for 2 consecutive cycles.47
A double-blind, placebo-controlled study of 30 women with complaints of premenstrual fluid retention found that use of oligomeric proanthocyanidins (OPCs) at a dose of 320 mg daily significantly reduced the sensation of fluid retention in the leg; however, actual leg swelling as measured was not significantly improved.40
One poorly designed human trial hints that krill oil may be helpful for some PMS symptoms.41 However, regular use of fish oil resulted in symptom improvement. In a randomized trial of 139 women, 2 g of fish oil per day for 3 months reduced depression, lack of concentration, anxiety, and bloating severity when compared to placebo. Fish oil was also associated in reduced duration time of symptoms, in addition to headache and breast tenderness.46
In a 24-week, double-blind study, 49 women with menstrual migraines received either placebo or a combination supplement containing soy isoflavones, dong quai, and black cohosh extracts.35 The treatment proved at least somewhat more effective than placebo. Soy isoflavones alone have also shown some potential benefit.42
Evening primrose oil, a source of the omega-6 fatty acids, was once thought to be helpful for cyclic breast pain. However, it probably does not work for this purpose. It has also been proposed as a treatment for general PMS symptoms, but there is only minimal supporting evidence.30
One study often cited as evidence that massage therapy is helpful for PMS was fatally flawed by the absence of a control group.36 However, a better-designed trial compared reflexology (a special form of massage involving primarily the foot) against fake reflexology in 38 women with PMS symptoms and found evidence that real reflexology was more effective.37 A small crossover trial of chiropractic manipulation for PMS symptoms found equivocal results at best.38
In a 2010 review of nine clinical trials, researchers could not conclusively determine the effectivenes of @acupucnture@ for premenstrual syndrome due to the poor quality of the studies.44
For a discussion of homeopathic approaches to PMS, see the Homeopathy Database.
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46. Evaluation of the effect of omega-3 fatty acids in the treatment of premenstrual syndrome: "a pilot trial". Complement Ther Med. 2013;21(3):141-146.
47. Taavoni S, Barkhordari F, Goushegir A, Haghani. Effect of Royal Jelly on premenstrual syndrome among Iranian medical sciences students: a randomized, triple-blind, placebo-controlled study. Complement Ther Med. 2014;22(4):601-606.
Last reviewed December 2015 by EBSCO CAM Review Board
Last Updated: 2/26/2016
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