Short answer: A credible nervous system support supplement names its specific mechanism — neurotransmitter balance, cortisol regulation, or direct nerve support — rather than one vague, combined claim.
Why nervous system support spans genuinely different mechanisms
GABA and L-Theanine target neurotransmitter balance directly, Ashwagandha and 5-HTP address cortisol and mood, while Valerian Root and Magnesium address direct nerve function — three distinct, complementary pathways.
What to check regardless of which specific mechanism appeals to you
Whether the brand discloses realistic timelines and whether "no dependency" claims are backed by a genuine mechanism explanation, not just asserted.
💡 Worth knowing: the formula's three-pathway structure is worth understanding before evaluating any single ingredient's role in isolation.