biology

Galactagogue

Galactagogue is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Galactagogue rather than just read about it. In short: A galactagogue, or galactogogue (from Greek: γάλα [γαλακτ-], milk, + ἀγωγός, leading), also known as a lactation inducer or milk booster, is a substance that promotes lactation in humans and other animals. It may be synthetic, plant-derived, or endogenous.

Key takeaways

Galactagogue belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Galactagogue to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Galactagogue from memory before moving on to harder problems.

Reference excerpt

A galactagogue, or galactogogue (from Greek: γάλα [γαλακτ-], milk, + ἀγωγός, leading), also known as a lactation inducer or milk booster, is a substance that promotes lactation in humans and other animals. It may be synthetic, plant-derived, or endogenous. They may be used to induce lactation and to treat low milk supply.

Pharmaceutical Synthetic galactagogues such as domperidone and metoclopramide interact with the dopamine system in such a way to increase the production of prolactin; specifically, by blocking the D2 receptor. There is some evidence to suggest that mothers who are unable to meet their infants' breastfeeding needs may benefit from galactogogues. A more recent study questions the effectiveness of commercial lactation cookies finding no significant difference. Galactagogues may be considered when non-pharmacologic interventions are found to be insufficient. For example, domperidone may be an option for mothers of preterm babies who at over 14 days from delivery and after full lactation support still have difficulty expressing breast milk in sufficient quantity for their child's needs. Lactation induction may also be possible in certain circumstances for women planning to adopt an infant. Domperidone (like metoclopramide, a D2 receptor antagonist) is not approved for enhanced lactation in the USA. By contrast, Australian guidelines consider domperidone to be the preferred galactagogue when non-pharmacological approaches have proved insufficient. Unlike metoclopramide, domperidone does not cross the blood–brain barrier and does not tend to have adverse effects such as drowsiness or depression. Other drugs which may increase lactation include:

Antipsychotics such as risperidone, chlorpromazine and sulpiride, due to their ability to block the D2 receptor Certain hormones such as oxytocin, growth hormone (GH), and thyrotropin-releasing hormone (TRH). Progestogens like progesterone, medroxyprogesterone acetate, and cyproterone acetate have been found to produce lobuloalveolar development of the breasts, which is important for lactation as milk is produced in the mammary lobules.

Herbal Herbals and foods used as galactagogues have little or no scientific evidence of efficacy, and the identity and purity of herbals are concerns because of inadequate testing requirements. The herbals most commonly cited as galactagogues are:

Shatavari (Asparagus racemosus) Fenugreek (Trigonella foenumgraecum) Torbangun (Coleus amboinicus), which has been used by the Batak people of Indonesia as a galactogogue for hundreds of years. Fennel (Foeniculum vulgare) Milk thistle (Silybum marianum); in 2010 the European Food Safety Authority considered and rejected a claim for silybum as a galactagogue because the evidence was deemed insufficient. Chasteberry (Vitex agnus-castus) Goat's rue (Galega officinalis) Other herbals that have been claimed to be galactagogues include:

Blessed thistle Alfalfa Anise Nettle Oatmeal Vervain Red raspberry leaf Marshmallow (althaea) root Moringa

See also Galactorrhea Herbalism Hypothalamic–pituitary–prolactin axis

References

Illustrations

Worked examples

Example 1 — a first encounter with Galactagogue

Start with the simplest possible case. Write down what Galactagogue claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Galactagogue before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Galactagogue ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Galactagogue

In research: Galactagogue appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Galactagogue in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Galactagogue is common in secondary-school and first-year university syllabi. It links to neighbouring topics Biologically based therapies, Breastfeeding, Galactagogues, so understanding it makes those chapters shorter.
In everyday life: Look for Galactagogue outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Galactagogue in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Galactagogue means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Galactagogue out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Galactagogue in simple terms?

Why does Galactagogue matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Galactagogue?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Galactagogue.