Food supplement based on melatonin and extracts of Griffonia, chamomile, and valerian.
4Sleep is your natural ally for deeply restorative nights. Formulated with natural ingredients and free of synthetic additives, its formula has been developed to help you fall asleep and maintain quality sleep throughout the night
Original price was: 21.23 €.18.05 €Current price is: 18.05 €.
Original price was: 21.23 €.18.05 €Current price is: 18.05 €.
Ingredientes: Griffonia seed extract (Griffonia simplicifolia (DC.) Baill.) standardized to 20% L-5-Hydroxytryptophan (5-HTP); valerian root extract (Valeriana officinalis L.) standardized to 0.8% valerenic acid; chamomile flower extract (Matricaria chamomilla L.) standardized to 1.2% apigenin; corn starch; melatonin. Vegetable capsule: coating agent (hydroxypropylmethylcellulose).
No synthetic additives: with natural ingredients that respect your body.
Griffonia seed extract:
(20% L-5-Hydroxytryptophan)
245 mg
of which
L-5-Hydroxytryptophan:
49 mg
Valerian root extract:
(0.8% Valerenic acid)
125 mg
of which
Valerenic acid:
1.0 mg
Chamomile flower extract:
(1.2% apigenin)
108 mg
of which
apigenin:
1.3 mg
Does not contain soy, peanuts, or wheat. Not genetically modified and non-irradiated. Free from gluten, lactose, caffeine, artificial additives, colorants, and preservatives.
Do not exceed the expressly recommended daily dose. Not suitable for pregnant women or individuals undergoing treatment with antidepressants or those with renal insufficiency. Not recommended for children under 12 years of age. Dietary supplements should not be used as a substitute for a balanced and varied diet and a healthy lifestyle.
Take one capsule per day with sufficient liquid, 1 to 2 hours before bedtime.
The most effective natural sleep supplement I've found. Highly recommend.
Helps me wind down naturally in the evening. Sleep comes easily now.
Great product for anyone struggling with sleep. Natural and effective solution.
Really helps with sleep quality. I feel much more refreshed in the mornings.
The natural formula works beautifully. No more sleep issues since I started using it.
Perfect support for natural sleep. The griffonia extract really helps calm the mind.
Three months in and my sleep quality has improved dramatically. Very satisfied.
Exactly what I needed for better sleep. Helps me relax without feeling drowsy next day.
Quality natural sleep supplement. The valerian and chamomile make a real difference.
Melatonin is the natural hormone that regulates the body’s circadian cycle, synchronizing sleep and wake periods with changes in ambient light. Factors such as stress, routine changes, jet lag, shift work, and menopause can interfere with the natural production of melatonin. Additionally, from the age of 40, melatonin levels significantly decrease, and in people over 70, they become minimal. These changes can make it difficult to fall asleep and affect sleep quality.
Melatonin helps reduce the time needed to fall asleep. The beneficial effect is achieved with a 1 mg dose taken shortly before bedtime.
Melatonin also helps alleviate the subjective feeling of jet lag. The beneficial effect is achieved with a minimum intake of 0.5 mg, taken shortly before bedtime on the first day of travel and for a few days after arriving at the destination.
According to the scientific opinion of the European Food Safety Authority (EFSA), 1 mg of melatonin is safe and, if taken before bed, effectively helps to restore sleep. Higher doses do not necessarily provide additional benefits and could even be harmful, increasing the risk of side effects such as headache, dizziness, nausea and daytime sleepiness.
Furthermore, the process of falling asleep also depends on other relaxation mechanisms triggered in the central nervous system, which is why 4Sleep is based on the combination of melatonin with three other active ingredients of natural origin, concentrated extracts of Griffonia, valerian and chamomile.
Griffonia, thanks to its 5-HTP content, helps improve brain activity* by regulating serotonin production, a key neurotransmitter for emotional well-being. Serotonin is progressively converted into melatonin during sleep.
*: Extracted from the list of health claim requests submitted to EFSA, under evaluation with ID number 2446.
Serotonin is progressively converted into melatonin during sleep and in the absence of light in the pineal gland.
Each 4Sleep capsule provides 245 mg of Griffonia extract standardized to 20% 5-HTP, equivalent to 49 mg of 5-HTP, to stimulate the natural production of melatonin during the night.
Valerian, known for centuries as a natural remedy for stress and insomnia, is one of the cornerstones of the 4Sleep formula. Its role is to act as a natural relaxant, helping to initiate and maintain sleep quality*. 4Sleep uses a concentrated valerian root extract, standardized to 0.8% valerenic acid, the primary component responsible for its relaxing effects. This effect is achieved without causing dependency, unlike other insomnia products.
*: Extracted from the list of health claim requests submitted to EFSA, under evaluation with ID numbers 2349, 2772, and 4222.
Each 4Sleep capsule contains 125 mg of concentrated valerian extract, providing an effective dose to promote healthy sleep and revitalized waking.
Chamomile, known for centuries as a natural remedy for stress and insomnia, is another key ingredient in the 4Sleep formula. Its function is to act as a natural relaxant that helps maintain sleep quality*. 4Sleep uses a concentrated chamomile flower extract, standardized to 1.8% apigenin, the main component responsible for its relaxing effects. Combined with the other ingredients in 4Sleep, chamomile provides a synergistic effect that contributes to quality rest and a more refreshed awakening, all in a safe manner. This effect is achieved without causing dependency, unlike other insomnia products.
*: Extracted from the list of health claim requests submitted to EFSA, under evaluation with ID number 2088.
Each 4Sleep capsule contains 108 mg of concentrated chamomile extract, standardized in apigenin to ensure its efficacy in promoting natural and restorative sleep.
Each 4Sleep capsule provides 245 mg of Griffonia extract standardized to 20% 5-HTP, equivalent to 49 mg of naturally derived 5-HTP per capsule
The European Food Safety Authority (EFSA) confirms that a dose of 1 mg of melatonin is effective in reducing the time needed to fall asleep when taken before bedtime. Higher amounts do not guarantee additional benefits and may increase the risk of side effects such as headaches, dizziness, nausea, and daytime drowsiness.
In Italy, the Italian Medicines Agency (AIFA) stipulates that in dietary supplements, melatonin should not exceed a daily dose of 1 mg. Exceeding this limit classifies the product as a medication, requiring a prescription.
The 4Sleep formula includes 245 mg of Griffonia extract, standardized to 20% 5-HTP, providing a daily dose of 49 mg of 5-HTP. This amount, supported by clinical studies, is considered safe and well-tolerated by the general population, with no evidence of adverse effects. In contrast, higher doses may increase the risk of undesirable reactions, emphasizing the importance of precisely formulated products like 4Sleep, which prioritize both efficacy and safety.
In Portugal, the National Authority for Medicines and Health Products (INFARMED) regulates that food supplements must not contain more than 50 mg of 5-HTP per day. Higher amounts require authorization as a medicine and a medical prescription, highlighting the focus on consumer safety.
The inclusion of 5-HTP in the 4Sleep formula is based on its clear advantage over tryptophan in terms of specificity and efficiency for serotonin production. While tryptophan participates in various bodily functions, such as protein synthesis, 5-HTP acts as a direct precursor in the serotonin biosynthesis pathway, standing out for its highly specific function.
This specialization allows 5-HTP to be more efficient in its conversion to serotonin and, consequently, to melatonin, the key hormone in sleep regulation. Thanks to this exclusive focus, 4Sleep optimizes its benefits, offering natural and effective support for restorative sleep and emotional well-being.
At 4Sleep, we guarantee quality, consistency, and reliability in every capsule thanks to the use of standardized extracts. This ensures that the active ingredients of Griffonia, valerian, and chamomile extracts are always present in the same precise amounts. Thus, we maintain the same level of effectiveness across all batches and offer you the confidence of knowing exactly what you’re consuming. Quality, trust, reliability, and transparency in every capsule.
At 4Sleep, we go a step further to provide you with a clean, natural, and highly effective formula. We have eliminated unnecessary synthetic additives that many other brands typically include, ensuring a purer and more reliable option for daily use. With safe dosages and free from superfluous ingredients, 4Sleep becomes your best ally for restorative rest, without compromises or worries.
4Sleep represents the result of rigorous research based on the latest advances in nutrition and phytotherapy, developed with strict adherence to international food safety regulations in all the countries where we operate. Each ingredient has been carefully selected and subjected to superior quality and safety standards, ensuring an effective formula that prioritizes the comprehensive well-being of our customers.
Manufactured in Spain under the strictest quality (GMP) and food safety (HACCP) standards. Because your health deserves the best.
At Nutribiolite, we not only care about your health but also protect the environment. Our packaging reflects our commitment to sustainability, helping to significantly reduce our environmental footprint. Because every small gesture counts for a greener future.
You only need one capsule before going to bed to enjoy a calmer, more restorative night. 4Sleep is designed to help you fall asleep faster and improve sleep quality, all naturally and safely. Sleep better and wake up refreshed every morning!
1 mg of melatonin, the dose endorsed by the EFSA as safe and effective, helps reduce the time needed to fall asleep by regulating the natural sleep-wake cycle and promoting restorative rest.
245 mg of Griffonia extract standardized to 20% in 5-HTP, which is equivalent to a daily dose of 49 mg of 5-HTP. This ingredient acts as a direct precursor to serotonin, promoting relaxation and restorative sleep.
100 mg of valerian root extract standardized to 0.8% in valerenic acid. Traditionally used to support well-being in stressful situations, valerian acts as a natural relaxant that helps initiate sleep and maintain its quality.
100 mg of chamomile flower extract standardized to 1.2% in apigenin. Chamomile, traditionally used, is known for supporting relaxation, which can foster an appropriate environment for rest.
If you have a question that isn’t answered in our FAQ section, please don’t hesitate to contact us.
Take one 4Sleep capsule approximately 30 minutes before bedtime with a glass of water. We recommend maintaining a regular schedule to optimize the benefits of the product.
Unlike products based solely on melatonin, even at daily doses higher than 4Sleep, our product offers a different and comprehensive approach to restorative sleep through three pathways.
These four ingredients work in harmony to optimize your natural sleep cycle. 4Sleep does not cause daytime drowsiness, unlike other products based on high doses of melatonin.
No, 4Sleep is formulated with adequate doses of melatonin, 5-HTP and natural extracts such as valerian and chamomile. These ingredients support restful sleep without causing residual drowsiness the next day.
Immediate release melatonin is more efficient at inducing sleep, as it enters the bloodstream at the maximum concentration after taking it.
Supplements that use slow-release melatonin are usually in the form of tablets that dissolve slowly, causing the melatonin to be released over a prolonged period, but at a much lower concentration than what could be obtained with a rapid release. The lower the concentration, the less the effect!
There are some brands that combine immediate and slow release, but the problem is the same. The dose must be divided into different parts of the tablet, which will also affect the final concentration in the bloodstream.
There are limitations in Europe regarding the maximum dose of melatonin allowed in food supplements, so very high concentrations cannot be used for a tablet that combines immediate and slow release to reach optimal concentrations in the bloodstream.
If you are taking any medication, especially for sleep, anxiety or any medical condition, we recommend consulting your doctor before using 4Sleep to avoid unwanted interactions.
4Sleep is designed for adults looking to improve their sleep quality. It is not recommended for children or pregnant or breastfeeding women.
Standardization ensures consistent levels of active compounds in each capsule, guaranteeing reliable effects with every dose.
No, 4Sleep does not contain magnesium stearate. The product is carefully formulated with natural ingredients and free of synthetic additives to ensure purity, safety and comfort for daily use.
At Nutribiolite, we understand that everyone has unique needs, especially when it comes to health care. We’re always available to answer your questions, provide personalized advice, and support you every step of the way to ensure you get the most out of our dietary supplements. Don’t hesitate to contact us; we want to make sure you feel confident, well-informed, and fully supported at all times. Your well-being is our priority!
At Nutribiolite, we select the best ingredients, prioritizing standardized extracts and chemical forms of minerals and vitamins with high bioavailability. This ensures that each component is effective and offers maximum benefits for your health. Additionally, we eliminate synthetic additives whenever possible, opting for natural ingredients that enhance our formulas.
Our development philosophy is based on scientific evidence. each product is formulated using ingredients supported by clinical studies and backed by the latest laboratory research. this ensures that our formulas provide solid and reliable support to safely and effectively improve your well-being.
All Nutribiolite products comply with strict international GMP and HACCP standards, ensuring maximum quality, traceability, and safety at every stage of production. Additionally, our transparent and detailed labeling ensures that you always have all the necessary information at your disposal to make informed decisions about your health.
At Nutribiolite, our relationship with you is built on ethics, empathy, and transparency. We listen to your needs and are dedicated to providing you with close, effective, and personalized service. We want you to feel that we are your ally on the path to better health, always offering clear guidance, continuous support, and solutions tailored to your well-being goals.
Join our exclusive circle at Nutribiolite and enjoy a 5% discount on your first order. Plus, receive expert health tips straight to your inbox to help you become the best version of yourself. We can’t wait to welcome you.
Don’t just take our word for it. See how Nutribiolite has made a real difference in the lives of those who already trust us.
| 5 star | 84% | |
| 4 star | 16% | |
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In food supplement reviews, results may vary from person to person. Customer opinions are independent and do not represent the views of Nutribiolite.
The most effective natural sleep supplement I’ve found. Highly recommend.
Helps me wind down naturally in the evening. Sleep comes easily now.
Great product for anyone struggling with sleep. Natural and effective solution.
Really helps with sleep quality. I feel much more refreshed in the mornings.
The natural formula works beautifully. No more sleep issues since I started using it.