I need to know a chemical material that decrease or stops the effect of caffeine

I need to know chemical material to decrease or stops the effect of caffeine:)

You could try to stop the coffee intake ;)

I need to know a chemical material that can decrease or stops the effect of caffeine in tea and coffee

This question, word for word, was asked and answered yesterday.

I think it would be reckless for us to recommend downers to fight your uppers.

If you are not fluent in American slang, I mean we shouldn't recommend depressants to counteract the stimulating effects of caffeine.

I need a rule againest caffeine or chemicals to reduce or remove the effect of caffeine

Didn't you post this question again today under the alias sosoh?

Your threads were merged and your question answered.

You should understand that if you don't want the effects of caffeine, then don't take it. We cannot tell you to take some drug to counter its effect because that may lead to undesirable downsides.

Perhaps if you elaborate more on your question, like why would you want to do so, you'll get the answer that you are looking for.