Pure Encapsulations   DL-Phenylalanine - 90 Capsules

Shop all Pure Encapsulations products
11 Reviews

"I have been taking DL-Phenylalanine for several years as suggested by my Naturop..."  Read all reviews

Item Number: PE1212
Serving Size: 1 Capsule Servings per Container: 45
Price per Serving:  $0.66 Price per Unit*: $0.33 per Capsule
* Price Per Unit may reflect product's price per capsule, tablet, ounce, fluid ounce, etc.
22 In Stock.

This item will ship on Monday before 5PM EST.

days. Never run out.
- +

Phenylalanine is a building block that the body uses to make proteins. Unfortunately‚ you have to get it through foods or supplements‚ since the body is unable to produce it naturally.

dl-Phenylalanine by Pure Encapsulations actually contains a blend of two essential amino acids to maximize potential effectiveness. These amino acids are l-phenylalanine (which is the form found in dietary sources) and d-phenylalanine (a mirror image of the former that is made in a lab; since they are well-tolerated by the body‚ this supplement is unlikely to cause uncomfortable side effects.

As a precursor to the amino acid tyrosine‚ l-Phenylalanine may end up increasing levels of some important neurotransmitters. Tyrosine is converted into norepinephrine‚ epinephrine‚ tyramine‚ and dopamine by the body. These metabolites may end up boosting memory‚ learning‚ and cognitive functioning. (On the other hand‚ signs of a mild deficiency can include decreased alertness‚ confusing‚ or trouble remembering things.) At the same time‚ tyrosine can support emotional well-being.

In addition‚ dl-Phenylalanine may also have benefits for your musculoskeletal system. By working to regulate the levels of certain endorphins‚ the d-phenylalaine in this supplement may relax and calm joints or muscles that are stressed‚ getting that stiffness off your mind.

d-Phenylalanine and l-Phenylalanine work in combination to help you maintain a positive mood. This support for emotional wellness may allow you to keep your mind on focusing on the tasks you need to perform on a daily basis.

Take four to six capsules daily‚ in divided doses between meals. At the recommended dosage‚ each 90-capsule bottle of Pure Encapsulations' dl-Phenylalanine should last for about 15 to 22 days.

Pure Encapsulations seeks to formulate and manufacture high-quality‚ hypoallergenic dietary supplements. Quality control during the formulation and manufacturing process is paramount. All Pure Encapsulations products are made with the most bioavailable ingredients possible.

These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose‚ treat or cure any disease or medical condition. Please consult your doctor before starting any exercise or nutritional supplement program or before using these or any product during pregnancy or if you have a serious medical condition.

  • MFG # LP9
  • UPC # 766298002637
Official Website: https://www.pureencapsulations.com

Serving Size: 2 Capsules
Servings Per Container: 45

Amount Per Serving / % DV

DL-Phenylalanine (Free-Form) 1‚000mg / *

*Daily Value not established.

Other Ingredients: Vegetarian capsule (cellulose‚ water)‚ ascorbyl palmitate.


As a dietary supplement‚ take 2 capsules‚ 2-3 times daily‚ between meals.

If you are pregnant or lactating‚ have any health condition or are taking any medication‚ consult your health professional before use.

Phenylketonurics: contains phenylalanine

Keep out of reach of children.

Use only if safety seal is intact.

Contents may not fill package in order to accommodate required labeling. Please rely on stated quantity.

  • Egg Free
  • Gluten Free
  • Non-GMO
  • GMP
  • Made in the USA
  • Peanut Free
  • Wheat Free
  • Hypoallergenic

Ratings and Reviews

Write a Review
  • 4.8
5 11
  • 11 Reviews
    • satisfied

      from Rockford on 1/11/2021
      Excellent service and product working as advertised .
      review-checkI would recommend this item to a friend.
    • makes me ready for anything

      from USA on 4/06/2020
      I feel better mentally and physically. don't know what i did before this.
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Active brain!

      from Texas on 7/07/2016
      It's amazing how DL-Phenylalanine by Pure Encapsulations helps me just to keep going. My brain works better, focus and faster.
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Goodbye Anti-depressants!

      from Crockett, CA. on 10/12/2015
      I'm using DL-Phenylalanine by Pure Encapsulations to normalize neurotransmitter levels analyzed from specific lab results. I am using three Pure Encapsulations, this being one of them. I am amazed and grateful for the benefits received from this product.


      I use them in tandem with two other products in this line of supplements with great results!


      review-checkI would recommend this item to a friend.
    • Verified Buyer

      DL Phenylalanine

      from NW GA on 6/24/2015
      DL-Phenylalanine by Pure Encapsulations seems to be helping. It took a few days. I have tried different amounts and personally can handle 1 capsule up to 2 times daily. It makes me groggy. As far as the pain, not much noticeable difference. But perhaps in time it will help.


      It seems to be working, pure without any added fillers/binders.


      review-checkI would recommend this item to a friend.
    • Effective and impactful

      from Idaho on 12/10/2014
      By chance I saw a Dr Oz email talking about DL-Phenylalanine by Pure Encapsulations that taking in combination with another, would effectively reduce glucose levels (Diabetic) and it has worked! In addition, my metabolism has improved! It has reduced high levels of pain and weak feelings.


      As a diabetic I am working to reverse diabetes and this is doing the trick.


      review-checkI would recommend this item to a friend.
    • Impacted glucose numbers!

      from Meridian idaho on 12/01/2014
      Started taking DL-Phenylalanine by Pure Encapsulations just two weeks ago in combination with 3 others also purchased here and wow. As a diabetic 2 waking up with 130 without the fat creating meds, this is a God sent.


      Glucose dropped


      Not a thing
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Great stuff for what ails you

      from Indiana on 9/24/2014
      DL-Phenylalanine by Pure Encapsulations helps me focus on what I need to do.
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Quality Product

      from Cuyahoga Falls, OH on 7/19/2013
      I have been taking DL-Phenylalanine for several years as suggested by my Naturopathic Dr. I take it to boost emotional health.
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Able to throw my depression meds out

      from Indiana on 11/30/2012
      I ordered dl-phenylalanine for depression and it works great for me. I have not taken anti-depressant drugs for years since going on DL-Phenylalanine and I have had lifelong depression struggles since my teens. Its just amino acids--so maybe I am deficient somehow. All I know is it works. Believe it or not dl-phen works even better for me than pharmaceutical anti-depressants with which I always still felt a little down; not quiet normal. But the dl-phen brings me right up to normal. I also had the added problem of getting used to the various anti-depressants and had to keep switching up to more expensive ones. I have never had this problem with dl-phen--probably because it is natural and my body does not build up a tolerance because DL-Phenylalanine is a natural substance. Dl-phen has not worked for me for anxiety but chasing away the depression has been MAJOR. A naturopath doctor spotted the dl-phen in a multi-vitamin supplement I was taking that was designed for mental health issues and told me it would be less expensive just to get the dl-phenylalanine. He was right--it works just as well for me. I stay on it and I am good to go. One note--if you try DL-Phenylalanine you should NOT go off your anti-depressant right away. If you start to feel better with the dl-phen talk with your doctor about slowly reducing your anti-depressant to see if you can wean off. I could feel the effects within days but give it longer--you might as well finish the bottle. I take Pure Encapsulations and have settled on a maintenance dose of 2 a day. The strength is not listed on the front--I think they just make one. You can look at the product info for details.
      review-checkI would recommend this item to a friend.
  • 1
    • Previous

Customer Questions and Answers

Please ask any questions you may have about this specific product in the field below.

Your question(s) and our corresponding answer(s) will not be confidential and will be posted publically on this specific product page.

Additionally, PureFormulas is unable to directly recommend products in relation to specific health conditions. Please contact your trusted healthcare practitioner for direct product recommendations.

If you have any general questions regarding orders or our policies and programs, please contact our Customer Happiness Team @ 1.800.383.6008

If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use. Your healthcare professional is the best source for guidance before beginning an exercise or nutritional supplement program.

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.

Ask a Question

Please log in to submit a question Log In