Life Extension D, L-Phenylalanine Capsules, 500 mg - Mood and Neurotransmitter Support - 100 Capsules

Who Can Benefit from D, L-Phenylalanine?

If you're looking to support your mood, mental clarity, and overall brain health, D, L-Phenylalanine might be just what you need. It's especially handy if your diet is low in phenylalanine-rich foods like eggs, fish, chicken, and dairy, or if you're vegetarian or vegan and may not be getting enough. People dealing with occasional low mood or stress can also consider this supplement as part of a balanced wellbeing routine. As always, chat with a healthcare professional before starting anything new.

What Is D, L-Phenylalanine?

D, L-Phenylalanine is a clever combo of two forms of the essential amino acid phenylalanine: the L-form (naturally found in protein-rich foods) and the D-form (a synthetic mirror image). L-phenylalanine is a building block for proteins and gets converted in the liver to L-tyrosine, which your body then uses to make key neurotransmitters like dopamine, norepinephrine, and adrenaline. D-phenylalanine may offer extra brain support by inhibiting certain enzymes. Each capsule delivers 500 mg of this dual-form amino acid to help keep your mood and cognition on track.

Key Benefits for Mood and Brain Health

By supplying the raw materials for neurotransmitter production, D, L-Phenylalanine can help support a balanced mood and a healthy stress response. Dopamine is central to feelings of pleasure and motivation, while norepinephrine boosts focussed and alertness. Research indicates that phenylalanine supplements may improve emotional wellbeing and cognitive performance. What's more, norepinephrine helps protect brain cells by promoting a healthy inflammatory response and counteracting oxidative stress—both important for long-term brain health.

What Makes Life Extension D, L-Phenylalanine Stand Out?

Life Extension is all about science-backed formulas. Their D, L-Phenylalanine capsules are made in the USA with strict quality control. The product is free from common allergens and artificial additives, and it's Non-GM, gluten free, and suitable for vegetarians. Each batch is tested for purity and potency, with a Certificate of Analysis available. Many users report a noticeable lift in mood and mental energy when taken as directed.

How to Choose a Quality Phenylalanine Supplement

When picking a phenylalanine supplement, go for a reputable brand that uses pure ingredients and is upfront about sourcing and manufacturing. Life Extension's D, L-Phenylalanine ticks all those boxes. The 500 mg dosage is a standard amount used in research, and the capsules are easy to add to your daily routine.

Frequently Asked Questions

How should I take D, L-Phenylalanine?

The typical recommended dosage is one capsule (500 mg) taken on an empty stomach, or as directed by a healthcare professional. Do not exceed the suggested dose.

Are there any side effects?

D, L-Phenylalanine is generally well tolerated. Some people might experience mild digestive upset. Avoid this supplement if you have phenylketonuria (PKU) or are taking MAO inhibitors. Check with your doctor if you have a medical condition or are pregnant or breastfeeding.

Can I take this with other supplements?

Yes, it can be combined with other amino acids or nutrients that support neurotransmitter function, such as tyrosine or vitamin B6. But always consult a healthcare provider to be safe.

*Always read the label and follow the directions for use. This product is not intended to diagnose, treat, or prevent any disease.*