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L-Phenylalanine 500mg Capsules

(3 customer reviews)
  • L-Phenylalanine is an essential amino acid and as such is not synthesized by the body. It must therefore be obtained from the diet.
  • In the body, Phenylalanine is a necessary precursor for important neurotransmitters that affect our attention, motivation and working memory.
  • Phenylalanine is also used by the body in the production of thyroid hormones T3 and T4.
  • Each capsule provides 500mg of pure Phenylalanine in its natural L- form.

In stock


60 Capsules (V)
60 Capsules (V)
Free UK 1st Class Delivery

Take one capsule daily on an empty stomach or between the meals.

L-Phenylalanine, Vegetable HPMC capsule.

Suitable for vegetarians and vegans.

NOT suitable for pregnant, breast feeding or for those with high blood pressure.
If taking medication, or have a medical condition, please consult your Doctor before use.
Do not exceed the recommended daily dosage.
Discontinue use if adverse reactions occur.
Food supplements must not replace a balanced diet and healthy lifestyle.
Keep out of sight and reach of children.
Store in a cool dry place.
Always read the label carefully.

Products on this site are offered as food supplements and are sold to enhance a balanced diet, they are not offered as a cure for any illness, disease or disability, always read the label. We advise you to complete your own research prior to purchase, if in doubt consult your medical advisor.

Weight74 g
Dimensions80 × 23 × 110 mm

Based on 3 reviews

5.0 overall

Only logged in customers who have purchased this product may leave a review.

  1. Enrico Andreotti

    Verified reviewVerified review - view originalExternal link

    Enrico Andreotti

  2. Linda Kelly

    Verified reviewVerified review - view originalExternal link

    Great product

    Linda Kelly

  3. Juan B.

    Verified reviewVerified review - view originalExternal link

    This are great, it took a few days to get used to, but I feel so much better now.

    If you feel like any of these apply to you, you might benefit from taking L-phenylalanine:

    – I lack pleasure in life.
    -I feel there are no real rewards in life.
    – I have unexplained lack of concern for others, even loved ones.
    – I experience decreased parental feelings.
    – Life seems less “colorful” or “flavorful.”
    – Things that used to be “fun” are no longer enjoyable.
    – I have become a less spiritual or socially concerned person.

    Dopamine is a neurotransmitter associated with the enjoyment of life, food, arts, nature, your family, friends, hobbies, and other pleasures. Brain fatigue, confusion, and lethargy are all symptoms of low dopamine.

    The brain cells which “manufacture” dopamine use the amino acid, L-Phenylalanine, as raw material. Start with 1000 mgs L-phenylalanine twice a day*. If needed, increase up to 4000 mgs twice a day. Don’t take late in the day since it may interfere with sleep. If you experience a rapid heartbeat, agitation, or hyperactivity, reduce or stop taking L-phenylalanine.

    Juan B.