NOW Foods L-Tyrosine 500mg (120 Capsules)
by NOW Foods
"500mg L-tyrosine — the dopamine precursor for stress resilience, focus, and cognitive performance under pressure with 12,000+ reviews"
Overview
NOW L-Tyrosine provides 500mg of free-form L-tyrosine per capsule. L-tyrosine is the amino acid precursor to dopamine, norepinephrine, and epinephrine — the catecholamine neurotransmitters responsible for motivation, focus, alertness, and stress response. Clinical research shows L-tyrosine is most effective under conditions of stress, sleep deprivation, or cognitive demand — it replenishes catecholamine stores that become depleted during prolonged mental or physical stress. The military has studied tyrosine extensively for maintaining cognitive performance during sleep deprivation and cold exposure.
Key Ingredients
| Ingredient | Amount |
|---|---|
| L-Tyrosine (Free-Form) | 500 mg |
1 ingredient linked to detailed encyclopedia profiles
Pros & Cons
What We Like
- 120 capsules (4-month supply)
- 12,000+ reviews
- Under $14
- Military-studied for stress
- Dopamine precursor
What Could Be Better
- 500mg (some protocols use 2-3g)
- May not help without stress/depletion
- Contraindicated with MAOIs
- Not effective for everyone
Who Is This For?
Best For
- Cognitive performance under stress
- Sleep deprivation recovery
- Focus and motivation support
- Pre-workout stacking (with caffeine)
Not Ideal For
- Those on MAOIs or thyroid meds
- Those without stress/depletion
- Those wanting immediate effects
- Those with hyperthyroidism
Our Verdict
NOW L-Tyrosine is the stress-resilience amino — 500mg dopamine precursor for cognitive performance under pressure. Most effective during stress, sleep deprivation, or high cognitive demand; less impactful under normal conditions.
Alternatives to Consider
No direct alternatives listed for this product yet.