What is it L-theanine?

L-theanine is an amino acid that is found in tea leaves. It can be summed up as being a relaxing agent without any sedation and is also said to reduce the feeling of stress and improve attention. 

L-theanine does not appear to induce sleep however, it may help with sleep due to its relaxing properties. 

The relaxing and attention promoting properties of L-theanine coupled with the lack of sedation means that L-Theanine is used in combination with many stimulants to take the edge off.


  • Relaxation
  • Improved Attention
  • Potential For Improved Sleep
  • Improved Cognitive Function
  • Reduces Side Effects From Stimulants


L-Theanine tends to be taken at a dose of 100-200mg and is usually taken with a stimulant ie caffeine.

By taking it with a stimulant you get the positive effects from both supplements without the jittery anxious feelings you may get from a stimulant on its own.