The herb that corrects irregular menstruation: Diodia scandens

The menstrual cycle varies from woman to woman. Although 28 days is often described as the average, many women have cycles that are naturally shorter or longer. What matters is knowing your own pattern and recognizing when there is a persistent change.

Irregular menstruation occurs when periods become unpredictable, with intervals between bleeding varying considerably. Some women may experience very long gaps between periods, while others may menstruate unusually frequently. Such changes are particularly common during the early years after menstruation begins and again as menopause approaches.

However, persistent irregularity should not simply be ignored. Very heavy bleeding, bleeding between periods or after sexual intercourse, prolonged absence of menstruation, severe menstrual pain, or a sudden change in an established pattern may indicate an underlying condition requiring professional attention. Several factors can contribute to menstrual irregularity, including hormonal fluctuations, polycystic ovary syndrome, thyroid disorders, certain contraceptives, significant weight changes, nutritional problems, stress, and emotional tension.

Traditional African medicine has long relied on indigenous plants in supporting women’s reproductive wellbeing. One botanical resource that has earned a particularly strong reputation in this area is Diodia scandens, traditionally known by several local names, including Ekwueme in Igbo and Dasa in Yoruba.

Diodia scandens Sw., belongs to the Rubiaceae family. The herb is a small, creeping plant with slender stems and rough-textured leaves. It grows in tropical regions and is found in various parts of Nigeria, often flourishing quietly in moist or disturbed environments. Its modest appearance can make it easy to overlook, but its place in indigenous medicine is anything but insignificant.

The plant has also attracted scientific interest. Phytochemical studies have reported constituents including saponins, tannins, alkaloids, flavonoids, phenolic compounds, and glycosides, while pharmacological research has investigated several of its reported traditional activities.

Traditional applications of the plant are as follows:

Irregular and delayed menstruation: This botanical resource has traditionally been used in women’s herbal practice where menstruation is delayed, irregular, or otherwise disturbed. The whole plant is used. In the traditional practice documented in my botanical and ethnomedicinal records, the fresh plant is squeezed or crushed and the expressed preparation is taken during the menstrual period. The traditional dosage recorded is one standard teacup three times daily. This is an example of how indigenous medicine often works with the whole plant rather than isolating a single constituent. The preparation, timing, and quantity have traditionally been determined according to the particular complaint and the practitioner’s experience.

Heavy menstrual flow: The whole plant is also traditionally used when menstrual bleeding is unusually heavy. Fresh plant parts are squeezed and the preparation taken during the period. Its traditional reputation in this area is significant because menstrual problems were not always viewed as separate symptoms. Indigenous practitioners often looked at the woman’s overall condition and selected plants according to the pattern presented.

Painful menstruation: Where menstrual irregularity is accompanied by discomfort, the herb may form part of a broader traditional formulation. Other plants have also been used traditionally for menstrual discomfort. Momordica charantia, known as Ejirin in Yoruba, has been combined with aromatic herbs like basil (Efirin) alongside other functional botanicals like vervain in indigenous preparations. Ginger and pineapple juice have also featured in traditional approaches to painful or scanty menstruation. These combinations demonstrate the traditional concept of botanical synergy, where different plants are selected for complementary purposes rather than simply mixed together. Each plant brings a specific action, and together they address the pattern of complaint.

**Menstrual changes around menopause: **As women approach menopause, changes in menstrual frequency and flow are common. Traditional herbal practice has employed several plants during this transition, including bitter leaf and other indigenous botanicals used for menstrual discomfort and delayed flow. Diodia scandens remains particularly interesting because of its longstanding reputation as a women’s herb within indigenous practice.

Supporting women’s reproductive wellness: The traditional applications of this botanical resource extend beyond menstruation. Ethnobotanical records describe its use in several other areas, including pain, wounds, inflammatory complaints, and postpartum practices. Scientific reviews have also documented a wide range of traditional applications and have called for further investigation of the plant’s pharmacological potential.

Interestingly, laboratory research has found that extracts of the plant can influence smooth muscle activity, including uterine contractions. This provides an important scientific reason for treating its traditional reproductive uses with respect and caution. In particular, preparations should not be used during pregnancy unless specifically directed by a qualified healthcare professional. This caution reflects the seriousness with which traditional practitioners approached reproductive herbs.

Menstrual irregularity can have many causes, and a traditional preparation should not be used to postpone proper investigation. Women experiencing persistent irregular cycles, very heavy bleeding, severe pain, bleeding after intercourse, or prolonged absence of menstruation should seek appropriate medical evaluation.

Diodia scandens may be a small herb, but its story is much bigger than its size. Generations of African herbal practitioners observed its usefulness and incorporated it into women’s traditional healthcare.

Today, ethnobotanical research gives us another opportunity to examine such plants carefully, preserve indigenous knowledge, and investigate where traditional observations may lead scientific discovery.

Sometimes the plants that grow quietly beneath our feet have the loudest stories to tell. Diodia scandens is one of them.

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