L-tryptophan Is The Top Natural Mood-Lifting Supplement!

L-tryptophan is an amino acid with great mood-boosting effects! It’s a wonderful supplement to take if you want to feel a great boost in your mood. Other benefits of taking L-tryptophan are better sleep, less time to fall asleep, and a reduced appetite. Tryptophan was first discovered in 1903 by a man called Frederick Hopkins.[1] In this article, we’ll examine the benefits of L-Tryptophan, the recommended dosage, and any possible side effects. One of the best things about L-tryptophan is that it is a natural amino acid. An L-tryptophan supplement may also be useful for people with a low-protein diet.

L-Tryptophan Benefits / Effects

L-tryptophan has a number of great benefits. Firstly, it is a precursor to serotonin and melatonin and is formed from 5-HTP.[2] These neurotransmitters are responsible for improved mood and maintaining healthy sleep. This is why so many people talk about the great benefits of L-tryptophan for improving mood and sleep. Increased serotonin has been directly linked to an increased mood.[3] The other benefits of L-tryptophan supplements include decreased appetite and the potential to help maintain a healthy metabolism.[4] A number of studies have indicated L-tryptophan’s strength in helping with maintaining a healthy weight. However, the benefit that people love the most is the potent mood-boost. [caption id=""attachment_1357"" align=""alignright"" width=""300""] Studies have found that l-tryptophan has the potential to help promote sleep[/caption] Scientists have discovered that L-tryptophan is really great for helping with sleep. One of the best things about L-tryptophan is that it can help to decrease the time it takes you to fall asleep, as well as the quality of your sleep.[5] Researchers have also discovered the great benefits of using L-tryptophan for helping to promote a healthy metabolism. Scientists have suggested that L-tryptophan supplements may have the potential to be helpful in reducing appetite, especially cravings for carbohydrates.[6] L-tryptophan is an amino acid, and you can get high quantities of it through your diet. The foods that are highest in L-tryptophan include fish, eggs, vegetables, and grains.[7] Most diets provide enough L-tryptophan to avoid deficiencies. However, if you’d like to benefit from the great effects of L-tryptophan, the best thing to do is to take a high-quality supplement.  

Recommended L-Tryptophan Dosage

The recommended dosage for L-tryptophan is around 3 – 5 grams daily.[8] However, smaller doses are also effective, and especially when you take it with other supplements. Good stacks include L-tryptophan with 5-HTP, L-tryptophan with Phenylethylamine, and L-tryptophan with L-theanine.  

L-Tryptophan Side Effects

[caption id=""attachment_1297"" align=""alignright"" width=""290""] Liftmode's L-tryptophan, 98+% purity[/caption] L-tryptophan is a safe and healthy supplement. It is a natural amino acid that is found in many foods. We recommend sticking to the recommended dosage to avoid potential negative side effects. If you are on any prescription medication or if you have any underlying medical conditions you should consult with your doctor before starting with L-tryptophan. Don’t take L-tryptophan if you’re using SSRI medication as this can cause an overly high concentration of serotonin.[9]  


In conclusion, L-tryptophan is a great supplement for boosting your mood! It has other wonderful benefits including improving your sleep and helping with weight loss. L-tryptophan can be found in various food sources. However, the best way to benefit from the great effects is to take a high-quality supplement! L-tryptophan is not intended to treat or cure any diseases or ailments.    

Medical Disclaimer

Not intended to treat, diagnose, or cure any disease or ailment. Please read and fully understand potential adverse effects before using this product. These statements have not been reviewed by the FDA and are not written by a medical professional. Please consult your doctor before using any supplements, especially if you have any medical conditions.


B.Sc. in Molecular Biology and Biochemistry Researched & written by Tristan and verified by the Liftmode.com Research Team


  [1] A contribution to the chemistry of proteins, FG Hopkins and SW Cole, J Physiol. 1901 Dec 23; 27(4-5): 418–428. [2] L-Tryptophan: Basic Metabolic Functions, Behavioral Research and Therapeutic Indications, DM Richard et al., Int J Tryptophan Res. 2009; 2: 45–60, Published online 2009 Mar 23. [3] The effect of raising and lowering tryptophan levels on human mood and social behavior, SN Young, Philos Trans R Soc Lond B Biol Sci. 2013 Feb 25;368(1615):20110375. doi: 10.1098/rstb.2011.0375. Print 2013. [4] Effects of a caloric restriction weight loss diet on tryptophan metabolism and inflammatory biomarkers in overweight adults, B Strasser et al., Eur J Nutr. 2015 Feb;54(1):101-7. doi: 10.1007/s00394-014-0690-3. Epub 2014 Apr 1. [5] Effects of tryptophan loading on human cognition, mood, and sleep, BY Silder and JA Schmitt, Neurosci Biobehav Rev. 2010 Mar;34(3):387-407. doi: 10.1016/j.neubiorev.2009.08.005. Epub 2009 Aug 26. [6] Recent research on the behavioral effects of tryptophan and carbohydrate, B Spring, Nutr Health. 1984;3(1-2):55-67. [7] 7 Foods That Could Boost Your Serotonin, Healthline editorial team, Medically Reviewed by Peggy Pletcher, MS, RD, LD, CDE on April 28, 2015 [8] Tryptophan (Oral Route), Mayoclinic.org, Dec. 01, 2015 [9] Drug interactions of clinical significance with selective serotonin reuptake inhibitors, PB Mitchell, Drug Saf. 1997 Dec;17(6):390-406.  

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