Personalised assessment

Glycine: supporting more restful sleep during pregnancy

glycine image matiere
Glycine sleep

This amino acid, naturally present in the body, is being studied for its potential to support easier sleep onset and a more restful perceived sleep quality.

Glycine relaxation

It may contribute to a sense of relaxation in the evening, helpful when the mind is still racing at bedtime.

Easy to incorporate

In powder or capsule form, it fits easily into an evening routine, as a complement to gentle sleep hygiene.

Origin and description

Glycine is an amino acid that your body can produce itself and that is also found in many foods.

It acts as a building block for certain structural proteins, particularly collagen, and also plays a role in nervous system signals linked to rest. During pregnancy, when sleep can become lighter or more fragmented, some people turn to it as background support. For a supplement, the form, purity, and label transparency are key reference points.

In its natural form, glycine is found in protein-rich foods, with a notable presence in gelatinous preparations. Broths, food-grade gelatine, slow-cooked cuts, as well as meat, fish, eggs, and dairy products all contribute. On the plant side, legumes and soy also add to overall intake. Absorption occurs alongside the other proteins in a meal, which makes it easy to incorporate without overhauling your eating habits. Quantities vary depending on recipes, appetite, and dietary choices.

In supplement form, glycine is mainly available as a powder or in capsules, making it easy to take regularly even when your evenings are unpredictable. Many people mix it into a warm drink, water, or yoghurt — it generally has a mild taste. When choosing, look for a short ingredient list, a clear origin, and a product free from unnecessary additives if you are sensitive to flavourings. Some

mama dreams 1 091be78b fe6f 45c2 9d28 056eb1e0c5f7

Products containing it

  • Mama Dreams Mama Dreams
    -25%
    Add

    Mama Dreams

    Complément sommeil à base de glycine

    Mélisse, camomille, glycine

    Compatible grossesse et allaitement

    For everyone

    from

    £20.10

    £27.81

    Add

Why is Glycine your maternity ally?

  • Evening Transition

    It can support the transition to rest when the day has been full-on and sleep is slow to come.

  • More stable sleep

    It has been studied to support better perceived sleep quality, especially when nights are lighter.

  • Soothing routine

    Taking it regularly in the evening helps establish a simple, reassuring ritual that is easier to maintain over time.

  • Tissue support

    It provides a building block used by the body for certain structural proteins, which are useful during bodily changes.

How does it work? (The science bit)

After ingestion, glycine is absorbed by the intestine and then circulates in the bloodstream. The body uses it according to current needs — notably as a material for building certain proteins and as a messenger involved in nervous system signals. It is an amino acid the body knows well, which is why it is often considered a "background" support rather than something with an immediate effect.

On the sleep front, research suggests that glycine may help some people feel more comfortable at bedtime. One frequently cited mechanism is evening thermoregulation — that natural, slight drop in core body temperature that helps facilitate falling asleep. In adults, studies have reported improvements in perceived sleep quality and better daytime alertness. During pregnancy, this is considered a possible support for an overall sleep routine, with results that vary from person to person.

Bannai M - New therapeutic strategy for amino acid medicine: glycine improves the quality of sleep (2012)

Kawai N - The sleep-promoting and hypothermic effects of glycine are mediated by NMDA receptors in the suprachiasmatic nucleus (2015)

Your questions, our answers.

The simplest approach is to pair it with a stable evening habit, such as your herbal tea, your yoghurt or your teeth-brushing routine. Taking it regularly is particularly helpful for observing how you feel over time. If you are already using a sleep formula that contains it, this avoids multiplying products. The aim is a light ritual that fits naturally into your evenings.

This could be considered as routine support when nights become more fragmented during pregnancy. The available data mainly concerns adults outside of pregnancy, and the reported effects may vary depending on the individual and the severity of sleep disturbances. The most realistic aim is a calmer evening, alongside the basics such as soft lighting, a regular bedtime and not eating too late.

Most people tolerate it well, but some digestive discomfort can occur, such as mild nausea, bloating, or looser stools. A feeling of drowsiness in the evening is also possible, especially if you are sensitive. Taking it with food may help improve comfort. If any discomfort arises, reducing the dose or spacing out intake can sometimes make it easier to tolerate.

Caution is particularly advisable if you have a kidney condition, if you are taking medication that acts on the nervous system, or if you are combining several "sleep" supplements. During pregnancy, the relevance of adding this supplement also depends on what you are already taking and your individual health situation. If you are on long-term medication or have a specific health condition, seek advice from a healthcare professional.

Pictos

Fast and free delivery

from £100 of purchases (and from £50 with a subscription)

Pictos 1

100% secure payment

CB, Visa, MasterCard, Paypal, Alma, Shop Pay, Apple Pay, Klarna, Twint, Amex

Pictos 2

A question?

We are available Monday to Friday (9am-1pm and 2pm-5pm):

Email Whatsapp
added to basket
View my basket
Continue shopping