Vitamin K2 against night cramps: natural relief?

Night cramps: when muscles contract wrongly

Night cramps are sudden, involuntary muscle contractions, most often in the legs (calves, feet or toes).

They usually occur during sleep, and can last from a few seconds to several minutes.

These painful episodes considerably disrupt the quality of sleep and can make it difficult to fall asleep, especially for people who suffer from them regularly.

Several factors can contribute to their occurrence (1):

• dehydration
• mineral imbalance (lack of magnesium, potassium, calcium)
• unusual muscular effort during the day
• taking certain medications (diuretics, laxatives or statins, in particular)

Researchers are also investigating the role of certain micronutrients in the proper functioning of muscle cells and the prevention of cramps (2).

A recent study looked at a potential link between vitamin K2 and nocturnal cramps.

Vitamin K2 and night cramps: what the study reveals

A study published in 2024 in JAMA Internal Medicine explored the potential role of vitamin K2 in preventing nocturnal leg cramps in older adults (aged 65 and over) (3).

The results of this clinical trial are encouraging! After 8 weeks of daily vitamin K2 supplementation, participants reported:

• a significant reduction in the average weekly frequency of cramps
• a reduction in the intensity and duration of the remaining cramp episodes

No significant adverse effects related to vitamin K were observed during the study, reinforcing its safety profile.

These results echo a previous study conducted in 2022 on haemodialysis patients, which showed an improvement in muscle cramps after vitamin K2 supplementation (4).

This effect could be explained by the key role played by vitamin K2 in regulating calcium in the body (5).

By activating certain proteins — such as GLA matrix protein (MGP) — it prevents undesirable calcium deposits in soft tissues, including muscles.

A sufficient intake of K2 could therefore contribute to better muscle function, and become a natural aid against night cramps, particularly in the elderly.

These results pave the way for further research, but already confirm the importance of an optimal intake of micronutrients to support muscular and vascular health.

How do you supplement with vitamin K2?

Vitamin K2 could be a potential aid in the event of night cramps. So how do you incorporate it into your routine to reap all the benefits?

Vitamin K2: a muscular and vascular support?

Vitamin K contributes to normal blood coagulation and the maintenance of normal bone structure.

Vitamin K2, also known as menaquinone, is a fat-soluble form of vitamin K.

It is thought to be involved in the activation of proteins that regulate both bone mineralisation and the preservation of soft tissue (7-8).

And its effects on the regulation of calcium in muscle tissue open up interesting avenues for support against nocturnal cramps.

Vitamin K2 can be obtained from food: it is found mainly in egg yolks, fish, liver and butter (9).

But our lifestyles and eating habits don't always allow us to achieve the necessary daily intake.

It is therefore possible to opt for targeted vitamin K2 supplementation.

Vitamin K and vitamin D synergy

The combination of vitamin K and vitamin D is of interest to researchers for its potential role in calcium balance and the proper functioning of the body.

Vitamin D contributes to the normal absorption of calcium and the maintenance of normal levels of calcium in the blood.

Vitamin K2, for its part, is thought to activate certain proteins involved in the regulation of calcium, promoting its binding to the skeleton while limiting its accumulation in soft tissues (blood vessels, muscles).

This synergy could therefore contribute to better mineral management in the body, and indirectly support muscular vitality and tissue flexibility.

Today, these two vitamins are combined in food supplements for a practical, targeted intake.

Discover Vitamin K2 MK-7 + Vitamin D3, a highly bioavailable combination and the only form of vitamin K2 capable of increasing blood vitamin K levels by up to 8 times.

Complete complexes: for overall support of the body

Some supplements judiciously combine vitamin K1 and vitamin K2 to provide optimum coverage.

Vitamin K1, which is mainly involved in blood coagulation, and vitamin K2, which is involved in activating proteins that regulate calcium distribution, act in synergy to support the body's essential functions.

This duo is particularly interesting for contributing to the correct balance of calcium in tissues and promoting strong bones, while preventing undesirable deposits in sensitive areas such as blood vessels.

These complexes are designed to provide overall support, particularly for people wishing to maintain their muscular and bone vitality as they age.

Discover Complete K, a complete formula combining K1 and K2 for better calcium distribution.