Supplement·Interactions·Reviewed June 9, 2026
EGCG (Epigallocatechin Gallate) interactions.
EGCG (Epigallocatechin Gallate) has 5 documented interactions in the NutriStack database: 3 that need timing or caution and 2 that work synergistically. The full list, with what each pairing does, is below.
EGCG (Epigallocatechin Gallate) at a glance.
A quick, data-grounded summary. The full table is below.
EGCG (Epigallocatechin Gallate) has 5 documented interactions in the NutriStack database: 3 that need timing or caution and 2 that work synergistically. The full list, with what each pairing does, is below.
Everything that interacts with egcg (epigallocatechin gallate).
Every supplement and medication in the NutriStack database with a documented interaction with this substance, highest-severity first. Open any pair for the mechanism and sources.
| Substance | Interaction | What happens |
|---|---|---|
| Green Tea Extract | Caution | EGCG is the principal catechin in green tea extract, so combining a standalone EGCG product with green tea extract stacks the same compound and... |
| NAC | Caution | High-dose EGCG can be hepatotoxic in susceptible individuals. NAC is hepatoprotective (a glutathione precursor and the antidote for acetaminophen... |
| Iron | Timing Sensitive | Green tea catechins such as EGCG bind non-heme iron in the gut and form poorly absorbed complexes, reducing iron absorption. This is most relevant... |
| Curcumin Phytosome | Synergy | EGCG and curcumin both activate the Nrf2 antioxidant pathway and inhibit NF-kB-driven inflammatory signaling, providing complementary antioxidant... |
| Quercetin | Synergy | Quercetin inhibits the metabolism of EGCG, including COMT-mediated methylation and efflux transport, which can increase EGCG bioavailability and... |
The full egcg (epigallocatechin gallate) profile.
Benefits, dosing by goal, forms, and the cited evidence for this supplement.
Common egcg (epigallocatechin gallate) questions.
Quick answers drawn from the table above.
What interacts with EGCG (Epigallocatechin Gallate)?
In the NutriStack database, EGCG (Epigallocatechin Gallate) has 5 documented interactions with other supplements and medications. The most notable include Green Tea Extract, NAC, Iron, Curcumin Phytosome, and Quercetin.
What works well with EGCG (Epigallocatechin Gallate)?
EGCG (Epigallocatechin Gallate) pairs synergistically with Curcumin Phytosome and Quercetin in the NutriStack database. Synergy still depends on dose and timing; open any pair for the detail.
Can you take EGCG (Epigallocatechin Gallate) with Green Tea Extract?
NutriStack classifies the EGCG (Epigallocatechin Gallate) and Green Tea Extract pairing as caution: EGCG is the principal catechin in green tea extract, so combining a standalone EGCG product with green tea extract stacks the same compound and substantially raises... Do not stack standalone EGCG with green tea extract. Count both toward total daily EGCG and keep the combined dose well below roughly 800 mg/day,...
Check your whole stack
See how egcg (epigallocatechin gallate) fits your routine.
NutriStack screens your full stack for interactions and timing conflicts, and updates the moment you change it.