Decaffeinated EGCG: How Caffeine Is Removed and Why It Matters

Yes, green tea extract normally contains caffeine unless it has been specifically decaffeinated. Caffeine and EGCG are different molecules that happen to occur in the same leaf, so removing one while retaining the other is a processing decision, not an automatic property of the extract.

How caffeine gets removed

Method How it works
Supercritical CO2 Carbon dioxide under pressure behaves between a liquid and a gas and preferentially dissolves caffeine. No solvent residue, and catechins are largely retained.
Water processing Caffeine is extracted into water, then separated. Gentle, but some catechins are lost with it.
Solvent based Ethyl acetate or similar. Effective and cheaper, but residual solvent testing matters.

CO2 processing is generally regarded as the cleanest of the three, because the CO2 simply evaporates and leaves nothing behind.

Why anyone wants caffeine removed

  • Timing freedom. A caffeinated extract taken in the evening can interfere with sleep. A decaffeinated one does not.
  • Stacking. People already taking coffee or pre-workout may not want an additional stimulant load.
  • Sensitivity. Caffeine sensitivity varies substantially between individuals.
  • Isolating the variable. If you are taking an extract for the catechins, caffeine is a confounder.

What "caffeine-free" should mean on a label

Decaffeination reduces caffeine to trace levels rather than to absolute zero in most processes. A supplier should be able to state the residual level. Our EGCG 800 is produced as a caffeine-free 98% EGCG extract, and every batch is third-party tested.

See the batch documentation

EGCG Certificate of Analysis  |  EGCG 800  |  What EGCG is

Common questions

Does EGCG have caffeine?

EGCG itself does not; it is a distinct molecule. Green tea extracts contain caffeine unless decaffeinated.

Does decaffeination reduce EGCG content?

It can, depending on method. This is why the EGCG percentage on the finished extract matters more than the process description alone.

This page is educational and describes extraction processing. It does not describe a health outcome. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.