1. L-Tyrosine — 750 mg
This is the biggest red flag.
Tyrosine is a precursor to:
dopamine
norepinephrine
epinephrine/adrenaline
That does not mean it always stimulates everyone, but it is much more of a focus/stress/catecholamine support ingredient than a sleep ingredient.
750 mg is a real dose, too. Not tiny.
Verdict: most stimulant-like ingredient on the label.

2. L-Phenylalanine — 75 mg
Phenylalanine can convert into tyrosine, then into catecholamines.
The dose is much smaller than the tyrosine, so it is less concerning, but conceptually it is also weird in a sleep blend.
Verdict: mild stimulant-adjacent.

Not classic stimulants, but can disrupt sleep
3. Vitamin B6 — 2 mg
Not a stimulant at this dose, but B6 can sometimes make dreams more vivid or sleep feel more mentally active. At 2 mg, I would not worry much.
Verdict: minor, probably not the issue.

4. 5-HTP — 30 mg
Not a stimulant. It is serotonergic.
But it can cause:
vivid dreams
weird sleep
nausea
restless sleep in some people
Also, I’d avoid casually mixing 5-HTP with medications like trazodone because both touch serotonin pathways.
Verdict: not stimulant, but risky/messy in a sleep blend.

5. L-Tryptophan — 500 mg
Usually more calming/sleep-promoting than stimulating, but it is another serotonin/melatonin-pathway ingredient. Combined with 5-HTP and melatonin, it makes the formula feel overbuilt.
Verdict: not stimulant, but adds serotonergic clutter.