Iron

Ferrous bisglycinate is a highly bioavailable form of iron which is effective for restoring iron levels in between monthly bleeds. It is also gentle on the stomach. This is because it’s chelated, meaning “bound” to the amino acid glycine, helping it pass more easily through the gut wall. Iron is essential for haemoglobin production in red blood cells, improving oxygen transport throughout the body and reducing tiredness and fatigue.

Benefits

Tiredness
Fatigue

More than 40% of women aren't meeting the minimum recommended iron intake, which is why it is such an important supplement for so many.

References

Verdon F, Burnand B, Stubi CL, et al. Iron supplementation for unexplained fatigue in non-anaemic women: double blind randomised placebo controlled trial. BMJ. 2003;326(7399):1124 RCT (placebo)
Vaucher P, Druais PL, Waldvogel S, Favrat B. Effect of iron supplementation on fatigue in nonanemic menstruating women with low ferritin: a randomized controlled trial. CMAJ. 2012;184(11):1247-1254 RCT (placebo)
Chocano-Bedoya PO, Manson JE, Hankinson SE, et al. Intake of selected minerals and risk of premenstrual syndrome. Am J Epidemiol. 2013;177(10):1118-1127 Case-control