Lamberts L-Phenylalanine 500mg 60 Capsules is a food supplement providing 500mg of L-phenylalanine, an essential amino acid, in each capsule. It is made in the UK and is suitable for vegetarians and vegans.

Key Features

• Natural L-phenylalanine in free form: Lamberts uses the L form, which is the form naturally found in proteins, presented in its free form.
• Suitable for vegetarians and vegans: Lamberts states the capsules are suitable for both, and the shell is made from hydroxypropyl methylcellulose.
• Made in the UK to pharmaceutical GMP standards: The manufacturer states the capsules are made to pharmaceutical GMP standards.
• 1 capsule daily: The label dose is a single 500mg capsule a day, so a 60-capsule pack lasts 60 days.
• Free from common allergens: Lamberts lists wheat, barley, soya, eggs, milk, lactose, nuts, sulphites, celery, fish, shellfish, yeast and gluten-containing ingredients as excluded.

What is the difference between L-phenylalanine and D-phenylalanine?

Lamberts states that phenylalanine comes in two forms. The L form is found naturally in proteins, and the D form is produced in a laboratory. This product contains the L form.

Is phenylalanine an essential amino acid?

Yes. Lamberts states that L-phenylalanine is an essential amino acid, which means the body cannot make it and it must be consumed in the diet.

Who should not take L-Phenylalanine?

Lamberts states this product must not be taken by people with phenylketonuria (PKU). It also should not be used with MAO inhibitors, a type of anti-depressant medicine. See the Warnings section for the full list.

Active ingredient: L-Phenylalanine 500mg per capsule.

Other ingredients: Rice flour, anti-caking agents (magnesium stearate and silicon dioxide), capsule shell (hydroxypropyl methylcellulose).

Additional information: The capsule contains a cream powder in a clear hard shell. Wheat, barley, soya, eggs, milk (and milk products), lactose, nuts, sulphites, celery, fish, shellfish, yeast and gluten-containing ingredients are excluded. Suitable for vegetarians and vegans.

Take 1 capsule daily with water or fruit juice rather than milk, ideally 30 minutes before a meal or at bedtime.

Read these precautions before taking L-Phenylalanine:

• Must not be taken by people with phenylketonuria (PKU).
• Should not be used with MAO inhibitors, a type of anti-depressant medicine.
• Not recommended for children or for pregnant or lactating women.