header_search header_signed-out header_signed-in header_cart sharefilled circlex circleexclamation
checkoutarrow
US
Added to Cart
Total:
Discount:
Together:
Quantity:
Cart Total:
Checkout
Customers Also Bought:
24/7 Help

Life Extension, D, L-Phenylalanine, 500 mg, 100 Veggie Caps

$14.06 $14.06 (Saved $4.69)

Thank you!

Your email is being processed.

Life Extension, D, L-Phenylalanine, 500 mg, 100 Veggie Caps

Click to zoom
10% Loyalty Credit  ?
MSRP:
$18.75
Our Price:
$14.06
$0.14/Veggie Caps
You Save:
$4.69 (25)
Quantity:

Sorry, this product is no longer in stock.

$13.36 (5% off)
$13.01 (7.5% off)
$12.65 (10% off)
Add 2 to Cart
$13.36
5% off
Add 6 to Cart
$13.01
7.5% off
Add 12 to Cart
$12.65
10% off

Life Extension, D, L-Phenylalanine, 500 mg, 100 Veggie Caps

In Stock
  • Expiration Date: July 2019
  • Shipping Weight:
    0.24 lbs
    Switch to Metric units
  • Product Code: LEX-16711
  • UPC Code: 737870167112
  • Package Quantity: 100 Veggie Caps
  • Dimensions:
    2.1 x 2.1 x 3.7 in, 0.2 lbs
    Switch to Metric units

Product Rank:

Frequently Purchased Together
Product Overview

Description

  • Foundation for Longer Life
  • Enhances Mood
  • Dietary Supplement

L-phenylalanine is an essential amino acid that can be converted to L-tyrosine in the liver. L-tyrosine can be converted in the brain and in the adrenal glands to dopamine, norepinephrine, and epinephrine (adrenaline) hormones that are depleted by stress, overwork and certain drugs. By replenishing norepinephrine in the brain, mental energy levels are enhanced and a feeling of contentment often occurs. The conversion step from L-tyrosine to norepinephrine may be enhanced if the co-factors (vitamins B6 and C) are included.

Cells in the adrenal medulla synthesize and secrete norepinephrine and epinephrine. Since both norepinephrine and epinephrine can cause smooth muscle (arterial) contraction, care with blood pressure should be taken when supplementing with L-phenylalanine or tyrosine.

D, L-phenylalanine is a 50/50 mixture of its two stereoisomers.

Suggested Use

Read the entire label and follow the directions carefully prior to use.

Take one (1) capsule daily on an empty stomach in the morning, or as recommended by a healthcare practitioner. Best utilized if taken with the co-factors vitamins B6 and C.

Other Ingredients

Vegetable cellulose (capsule), microcrystalline cellulose, vegetable stearate.

Warnings

Store tightly closed in a cool, dry place.

Caution: May cause anxiety, high blood pressure, and headache. Do not use if you have phenylketonuria. Do not use phenylalanine or tyrosine if you have cancer or muscular dystrophy. Because phenylalanine can elevate blood pressure in hypertensives, consult your healthcare practitioner if you have hypertension. Insomnia may occur from overstimulation if taken too close to bedtime.

  • Keep out of reach of children.
  • Do not exceed recommended dose.
  • Do not purchase if outer seal is broken or damaged.
  • When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.

Disclaimer

While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
Supplement Facts
Serving Size: 1 Vegetarian Capsules
  Amount Per Serving %Daily Value
D, L-Phenylalanine 500 mg **
**Daily Value not established.