Citrulline, or L-citrulline, is an amino acid that occurs naturally in the body.
In particular, it helps to remove excess toxic ammonia from the body by converting it into urea, a much less harmful substance which can then be excreted by the kidneys via urine.
Citrulline is also converted into arginine in the body, a precursor of nitric oxide (NO). This gas promotes vasodilation, which is important for maintaining blood flow and cardiovascular health. Increasing citrulline intake is sometimes recommended for improving the quality of erections.
Through its effect on the circulation, citrulline also supports stamina and physical performance, and is thus particularly popular with sportspeople.
This amino acid also plays a role in muscle recovery by facilitating the removal of metabolic waste products from muscles (often associated with muscle fatigue).
Small amounts of citrulline are found in several fruits and vegetables, including watermelon, known scientifically as Citrullus lanatus from which it takes its name, and other cucurbits such as cucumber, melon, pumpkin and squash.
Sportspeople often take extra citrulline on top of that provided by the diet in the form of dietary supplements which provide a much higher dose (such as L-Citrulline). In supplements, citrulline has zero or negligible taste and is thus particularly easy to take.
If you want to supplement with citrulline, be sure to consult a health professional. It’s particularly important to seek medical advice if you suffer from heart disease (especially if you're on medication that affects blood pressure), kidney disease or liver disease, if you are pregnant or breast-feeding, have abnormal intestinal absorption, or are affected by citrullinemia (a urea disorder).
It’s reasonable to question citrulline’s effects on sleep, given that obtaining restful sleep is a key concern for sportspeople as it is for anyone wishing to maintain good physical and mental health.
Though research is limited, the early signs are positive: taking citrulline may actually promote better sleep since it improves the circulation (which leads to better control of body temperature, good nutrient distribution, effective elimination of waste products …) and reduces muscle tension.
An animal study suggests it also has a cardioprotective effect in the case of obstructive sleep apnoea (1).
In addition, several studies have concluded that arginine (the amino acid obtained from citrulline) plays a role in regulating variables of sleep quality or at least does not impair sleep (2-4).
In short, citrulline appears to have no negative effects on sleep.
Existing data suggests that in principle, taking citrulline presents no risk to sleep quality, indeed quite the contrary.
Of course, since everyone responds differently to supplementation, it is ultimately up to you to establish whether citrulline affects your ability to fall asleep and get a good night’s sleep.
If you’re specifically looking for a supplement to help with insomnia, we’d recommend focusing on the following (whether alongside citrulline or not):
or a combination of the two (with Advanced Sleep Formula or the sleep-promoting ‘sweets’ Sleep Gummies).
References
1 Days
Really good quality
Fabio
1 Days
In our experience products of SuperSmart have high quality. In this case the products are also hard to get elsewhere.
Dhr Fred Laan
19 Days
Great product. Fast and efficient service.
Sheba Kelleher
24 Days
Easy to order, good and fast delivery to Finland, the box was intact and the content exactly what I ordered. I am satisfied. Product prices are on moderate level. Thank you Supersmart!
VIITANEN Esa
29 Days
Thanks to team who met what I need such as trust, good packages and fast delivery. Regarding products it is too early to give a comment. After using for a while, I gonna update my review. I had bought supplements mostly for autism.
Fatma Coltu
29 Days
efficient eqsy to use
Mr G Birtles
35 Days
You are so quick in processing orders and prompt in shipping too. Very easy to do business with you. Thanks a lot for your great service.
JOAQUIN Epifanio
41 Days
I am merely judging the delivery system, which was flawless. It wouldn't make any sense to comment on the efficacy of the supplements, since that is only possible on a statistical basis. Even if something doesn't improve, that doesn't have to mean that the supplement doesn't work, since one doesn't know how it might have worsened without the supplement and the opposite might also apply, since many symptoms are psychosomatic and the supplement might provide a placebo effect.
Roger De Backer
49 Days
Perfect!!!!!!!!!!!!!
Patrick
51 Days
Magnesium and Zinc Orotate are top supplements. Highly recommend!
Kristjan
62 Days
Nothing to complain. Delivers everything fast, attentive to their regular customers. Best experience.
FABIO I.
65 Days
Possibility to enjoy a variety of high quality suppléments. Fast delivery Good packaging Clear information and website
Vov Oo
67 Days
Efficient ordering and delivery. Happy with products. I order fairly regularly. Reliable
Gill Lee
67 Days
Supersmart sell the best products and are effecient when it come to handling and dispatching orders. Also, their return and refund policies is very simple and easy for the customer. The creme on top is the return customer discounts. Keep up the good work.
ABDULQADER Jehad
71 Days
Prompt and reliable.
MIFSUD Joseph