Cross-referencing clinical data
A pairing appears on this page only when a trial gave both ingredients together and measured the result. Acacia berlandieri has none that clears that bar.
Stitching two separate single-ingredient studies into a pairing is the one thing this engine will not do. When a study of the combination itself holds up at source, it lands here with its citation.
No invented synergy. Where actives were studied on their own rather than together, the record shows each on its own evidence, never a combined effect no trial measured.
Research strength. Research strength says how much work stands behind the combination. It is never a product score.
Independent record. Every finding is cited to a named trial, dated, and never written by the brand.
20 pairings are live across the library today. Checked 20 July 2026.
No study gave these as a pair, so they are not in the card above. But the reason they belong together is settled biochemistry, not a guess, so it is worth knowing.
Indirect sympathomimetics work by pushing stored catecholamines out of nerve terminals rather than by making new ones. Tyrosine is the upstream substrate for that pool through the tyrosine hydroxylase step. Pairing them is a substrate-plus-releaser logic, which is mechanistic rather than clinically demonstrated for this plant. No human study has tested the combination.
Theanine does not block sympathomimetic amines, but it shifts the subjective texture of stimulation toward less jitter. Formulators use it beside stimulant botanicals for that reason. It does not lower the cardiovascular load, so it should not be read as an offset. The effect is on how the stimulation feels, not on what the amine does to vascular tone.
St John's wort raises synaptic monoamine availability through reuptake and enzyme effects. Adding a releasing amine on top pushes the same pool from the other end. That is a recognised reason for caution with any indirect sympathomimetic, not a benefit to seek. The pairing is flagged here as an anti-synergy.
Dietary nitrate raises nitric oxide availability and tends to relax vessels. A sympathomimetic amine pushes the other way through adrenergic vasoconstriction. The net blood pressure effect of the pair is not predictable from either component. Read the interaction as directional conflict rather than as a smoothing agent.
Nothing specific on file for Acacia berlandieri. Match the label to the daily amount above, and tell your doctor what you take.
Not medical advice. Show the label to your pharmacist.FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting any supplement regimen.