NutriStack
SynergyInsufficient evidence
What is happening. Both are mild calming supplements and may be complementary.
Mechanism. Complementary calming pathways.
Recommendation. Reasonable at low doses if alertness is not impaired.
Supplement × Supplement·a synergy·Insufficient evidence
Chamomile + L-Theanine
Synergy
Insufficient evidence
Both are mild calming supplements and may be complementary.
From the database
What the row says.
Every entry follows the same shape: what is happening, the mechanism, and the recommendation.
Substances
Chamomile and L-Theanine
Pair type
Synergy
Evidence
Insufficient
Source citations
1
Scope
Supplement × Supplement
Last verified
June 4, 2026
Stack Score
How it moves the number.
Effect on the composite score
If both Chamomile and L-Theanine are in the same stack, this pair applies +2 to your Stack Score (per scored synergy row).
The full algorithm, the clamping rules, and four worked stacks are at /methodology/stack-score.
Sources
Sources, by evidence tier.
Every claim on this page is cited. PMIDs link straight to PubMed.
Reference material
1- 1Amsterdam JD et al. Chamomile extract for GAD trial. J Clin Psychopharmacol. 2009.Needs sourceNo link
Check your full routine
One pair was the worked example.
Drop your supplements and prescriptions into NutriStack and it runs every pair at once: every interaction, synergy, timing rule, and contraindication, each linked to its primary source.