NuSci Pure L-Tryptophan Powder 100g (3.52oz) sleep aid weight loss

Description: L-Tryptophan Pure Powder An Essential Amino Acid A Precursor of Serotonin and Melatonin Pharmaceutical Quality Grade 100 grams (3.52oz) L-Tryptophan pure powder, free base form, with US Pharmacopeia (USP) Quality. There is not any additive or filler inside. Manufacturer assayed >99%. It is fresh enough for use. There is 1~1.5 years shelf life available. Appearance: White to yellowish crystalline powder. Taste: Very slightly bitter taste. Solubility: Slightly soluble in water, mixable in cold water. Store in cool and dry place, keep away from strong light and heat. This L-Tryptophan base form pure powder is good for direct consume, formulation, health product R&D (research and development), or your business purpose. Generally Suggested Use: For adult, take flat 1/2 teaspoon (0.5g) powder 1 to 3 times daily with water or juice on an empty stomach, or as directed by your physician. For sleep aid, best used before bedtime. Or, for your formulation, R&D, and your other use purpose. More packs and packing sizes are available, please visit our store. 100 g (3.52 oz) L-Tryptophan Powder 227 g (8.0 oz) L-Tryptophan Powder 500 g (1.1 lb) L-Tryptophan Powder 1000 g (2.2 lb) L-Tryptophan Powder Health Benefits of L-Tryptophan: Promotes Restful Sleep Encourages Positive Mood and Emotions Supports Relaxation Supports Weight Management Efforts L-Tryptophan is an essential amino acid. L-Tryptophan is metabolized by enzymes to form the intermediate amino acid 5-HTP (5-hydroxytryptophan) and then serotonin. L-Tryptophan is also the metabolic precursor to melatonin and to the B vitamin niacin (B3). Both serotonin and melatonin are important to regulate mood and stress. Serotonin plays important roles in the body for sleep, mood, appetite, muscle contraction, and some cognitive functions including memory and learning. Though there are many dietary sources of serotonin, unlike its precursors L-tryptophan and 5HTP, serotonin does not cross blood-brain barrier, which means that ingesting serotonin in the diet has no effect on brain serotonin levels. As proven by many studies, L-tryptophan is a potent nutrient to enhance restful and peaceful sleep, and also to effectively provide a remedy for occasional sleepless. There is not feeling of next-day drowsiness to take L-tryptophan. The body requires adequate sleep to regenerate and repair essential body functions and allow us to feel refreshed. Sleeping well is a necessity for maintain proper health. Clinical studies show that L-tryptophan supplementation can positively affect healthy mood and emotional well-being. Supplementation with L-tryptophan can cause in increase in happy facial expression, a decrease in negative and disgusted facial expressions, and decrease in the attention paid to negative words. A study also indicated that supplementation L-tryptophan with one gram three times per day significantly decreased quarrelsome and aggressive behaviors while enhancing agreeable behaviors in everyday social interactions. A double blind placebo-controlled study found that two grams of L-tryptophan administered three times a day, from the day of ovulation to the third day of menstruation (the luteal phase) in healthy women, significantly relieved the most prominent mood symptoms associated with PMS. After three months of use, women taking L-tryptophan experienced statistically significant control of extreme mood swings, sadness, irritability, and tension. It also improved their perceived quality of life (A placebo-controlled clinical trial of L-tryptophan in premenstrual dysphoria. Steinberg S, Annable L, Young SN, Liyanage N.; Department of Psychiatry, St. Mary's Hospital, Montreal, Quebec, Canada.;Biol Psychiatry. 1999 Feb 1;45(3):313-20.). L-tryptophan may play a supportive role in helping individuals who are currently involved in weight management programs and diets by helping to reduce carbohydrate cravings. During dieting, serotonin levels drop dramatically. Serotonin plays a role in controlling appetite, and eating carbohydrate-rich foods increases serotonin levels in the brain. This may explain carbohydrate cravings and resultant binge eating in some dieters. While no human trials have examined L-tryptophan supplementation directly, a number of clinical trials have used supplemental 5-HTP, the amino acid produced in the body from L-tryptophan. Results of these trials have shown decreases in overall food intake and a subsequent reduction in weight in individuals taking 5-HTP. ([1]. Eating behavior and adherence to dietary prescriptions in obese adult subjects treated with 5-hydroxytryptophan.Cangiano C, Ceci F, Cascino A, Del Ben M, Laviano A, Muscaritoli M, Antonucci F, Rossi-Fanelli F. 3rd Department of Internal Medicine, University of Rome, La Sapienza, Italy. Am J Clin Nutr. 1992 Nov; 56(5):863-7. [2]. A functional food product for the management of weight. Bell SJ, Goodrick GK. Functional Foods, Inc., Belmont, MA 02478, USA. Crit Rev Food Sci Nutr. 2002 Mar; 42(2):163-78. [3].The effects of oral 5-hydroxytryptophan administration on feeding behavior in obese adult female subjects. Ceci F, Cangiano C, Cairella M, Cascino A, Del Ben M, Muscaritoli M, Sibilia L, Rossi Fanelli. Department of Internal Medicine, University of Rome La Sapienza, Italy. J. Neural Transm. 1989;76(2):109-17.) It is likely that L-tryptophan supplementation would have similar effects. Caution: If you are taking anti-depressant medications, please ask your physician before taking L-Tryptophan. Quality: Specification of this L-Tryptophan Base Form Pure Powder Following Certificate of Analysis (COA) is transferred from the COA of manufacturer Conforms to USP quality standard (US Pharmacopeia) Appearance: White to yellowish white crystalline powders Identification: Conforms pH value: 5.9 Assay: >99% Loss on Drying: 0.10% Residue on Ignition: 0.06% Specific Rotation: 31.500 Chloride: < 0.020% Sulfate: < 0.020% Iron: < 0.0007% Heavy Metals: < 10ppm Organic Volatile Impurities: Conforms Warnings: Above description is for information and knowledge purpose, not a healthcare professional advice. Please read the whole description carefully before you decide to buy this item. Please consult your doctor and/or pharmacist before you take this amino acid. Pregnant or lactating women, diabetics, hypoglycemics, and people with known medical conditions and/or taking drugs, should consult with a licensed physician and/or pharmacist prior to starting any supplementation program. Disclaimer: These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. Motto of NuSci: With the best knowledge from medicinal chemist (Ph.D.) consultant, NuSci will always provide the best products with the highest quality and competitive price to serve people. Shipping and Handling: Ships to Worldwide (1). For Combine Shipping If you order more than 2 of this same item (and/or different item) at once, there is possibility of combine shipping for saving shipping cost. Alternatively, please just go ahead to check out and make payment, we will fairly credit back for excessive shipping fee, or send you money request for insufficient shipping fee through PayPal system. (2). For Receiver Name and Shipping Address We ship to your PayPal address. If you want us to send to your any other address, please notify us in time. Please make sure that you provide us sufficient and accurate receiver name and shipping address information, we will make your shipping label with the exactly same shipping address as which originated from your PayPal account or your specific notification. It is your own responsibility for any shipping result if you did not provide sufficient and accurate “ship to” details, including not claim your package in time from USA (or destination country) Postal Service, resulting package returned back. We always try our best to check the sufficiency and accuracy of every buyer's shipping address. If we can find any question for your shipping address, we will contact you immediately, but sometimes it is very hard for us to do that for you, especially for international shipping address. So, again, please double check your “ship to” details when you are checking out. (3). USA domestic handling time: We usually ship within 1 business day of receiving cleared payment. (4). For International Buyers, please read following carefully before you decide to order (Including domestic buyers asking for shipping to an address outside USA)*Please be aware we will not refund any international package which international buyer refuses to pay customs duty or tax. These additional customs duty or tax costs vary depending on your location. Please refer to your local customs office to estimate there fees. International shipping is complicated. Different country has different regulation. While most foreign countries permit to import our store listing products, some countries' customs may restrict or ban some of the products. Would you please consult your country's customs to see if there is any restriction to the product, before you order, to avoid unnecessary money loss. It is your own responsibility, if your packages are confiscated/destroyed/held/seized by your country’s customs, we do not refund any of your payment. If we can be aware of your country's restrictions according to our international shipping experience, we will ask you to cancel your order and then refund all your payment. But we cannot guarantee having the awareness of your country’s customs regulation. It is international buyer’s (or receiver’s) responsibility to pay import tax and any other fee incurred from your country’s Customs or any other organizations, if there is that. International shipping carrier is USA Postal Service (USPS). This low shipping fee which we collect for international shipping is only for regular postal international shipping service. We can only provide you Customs Form number of your package and evidence of shipment, but it is not a tracking number, without any tracking details. If you want a tracking number (especially for high value products), you can spend additional US$12 cost for extra Register Mail Service, then you can get a Registration tracking number. We always ship out international order as soon as possible once all the conditions are clear. The international delivery time is variable from anywhere of 2 to 6 weeks, sometimes even longer time, depends on your country’s Customs Checking and Clearance situations, and Postal Service conditions. (5). Refund and Return Policies: Conditions accepted for return:We will charge 20% restock fee and buyer pay return shipping fee and shipping fee we used to ship package . We only accept un-opened items return We care. We guarantee product's identity, quality, and quantity. If we send you product which does not conform to its described identity, quality and quantity, including shipping damage, we do all our best to remedy, including immediately ship a correct and new one, or offer full return, and 100% money back to you. Would you please check the product immediately when you are receiving the shipping package, and let us know immediately if there is any issue. Any full return subject to our verification and approval first. Conditions NOT accepted for return and refund: We do not accept used items return.For security and quality assurance purpose, we never re-sell any returned product for any reason. All returned product will be properly disposed. So, once package is shipped out, we do not accept return and refund for so-called “mistake order”, “change mind”, "no efficacy", "bad taste", "ordered too much", “customs prohibited”, “import restriction”.... so, please think about before you order, and if you are not familiar to the product which you are intending to order, we suggest you try to order a smaller packing size first.

Price: 20.95 USD

Location: Walnut, California

End Time: 2024-09-28T20:06:56.000Z

Shipping Cost: 5.95 USD