L-Phenylalanine Powder

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Health Benefits Provided By L-Phenylalanine

L-Phenylalanine possesses many health benefits, among them, the ability to manage pain, and to control mood swings. On top of that it also heightens overall awareness and it helps regulate appetite. It can be used as a component in the synthesis of many different proteins that are naturally produced in the body. These pain relieving effects that L-Phenylalanine possess are believed to be connected to the fact that it also helps to produce endorphins in the brain, natural opiates that the body produces on its own.

Phenylalanine is also converted into Tyrosine in the body, which is another type of amino acid that creates proteins, hormones of the thyroid and various other chemicals in the brain. It also helps create the neurotransmitters Norepinephrine, Epinephrine, and Dopamine which are needed to send signals from one nerve cell to the next. Phenylalanine is also important to the liver, and is used in many different reactions.

Supplement Facts
Serving size: 500 milligrams
Serving per container: *
Amount Per Serving % Daily Value**
L- Phenylalanine 500mg *
* Daily Value not established.
** Based on 2,000 calorie diet


Sugar, soy, dairy, yeast, gluten and additives.

As a dietary supplement, take 500mg one to three times daily between meals, or as directed by physician.


Since this supplement has the potential to have serious effects on neurotransmitters and emotional responses in the brain, it should not be taken by anyone that is already being medicated for psychiatric conditions such as depression. Taking this along with antidepressants could elevate the blood pressure to very dangerous and possibly fatal levels. If you have been diagnosed with Phenylketonuria (a condition that causes the body to improperly metabolize Phenylalanine), this supplement must not be consumed.

Ignoring the suggested serving size of L-Phenylalanine or taking too much of it over long periods can cause adverse side effects such as headache, heartburn, heightened blood pressure, mood swings, anger agitation, nausea, insomnia, serious nerve damage and problems digesting Tyrosine. Anyone that routinely experiences high blood pressure or serious headaches like migraines should not take this supplement or consume foods that are high in Phenylalanine content. This product should also not be consumed by women who are pregnant or nursing and those with melanoma.


This vegetarian product dissolves slowly in water. The hotter the water, the more easily this substance dissolves. It has no discernible taste. It should be mixed with water or juice and then consumed.

There is no guarantee of specific results and results can vary.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

California residents: Click Here for Proposition 65 warning.

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perfect for my needs

I was looking for a new supplier for my amino-acid powders and happily found " Bulk Supplements". I ordered this L-Phenylalanine (to combine with L-Tyrosine) that I take in the morning for mental clarity and I'm very happy with the results and their product.


It's helping

Taking at the recommended dosage, within 2 days it has helped increase focus throughout the day and remove the morning fog. And as always, super fast shipping!


Fast Shipping

I'm trying this for anxiety & ADHD. Fast shipping

Joe K.

L-Phenylalanine 250 grams

I find L-Phenylalanine powder very helpful in my ADD and keeping me calm and focused through the day. The Bulk pricing is amazing and is much less than that of any prepackaged store brand and I have confidence in what I am getting. I really love this because of the purity and clean packaging. searching the web to find a quality product is daunting but I am grateful for my finding this site with these products.


L-Phenylalanine Powder

Great for the nervous system in combination with 5 HTP!! Thanks!