Taking theanine along with stimulant medications might decrease the effectiveness of stimulant medications. Some stimulant drugs include diethylpropion (Tenuate), epinephrine, phentermine (Ionamin), pseudoephedrine (Sudafed), and many others.
Interactions. If you take any medicines regularly, talk to your doctor before you start using theanine supplements. They could interact with stimulants, sedatives, and drugs for high blood pressure.
L-theanine may interact with the following drugs and supplements: drugs for the treatment of high blood pressure. other supplements that lower blood pressure. stimulants, such as those that doctors use to treat attention deficit hyperactivity disorder (ADHD)
Medications for high blood pressure (Antihypertensive drugs) interacts with THEANINE. Theanine might lower blood pressure. Taking theanine along with medications that lower blood pressure might cause blood pressure to go too low.
“Taking it once daily as a supplement, or as needed on an extra stressful day, can work wonders for alleviating stress and anxiety—but that's not all.” About 20 minutes after ingestion, L-theanine naturally lowers the body's cortisol levels.
So, should you take L-theanine in the morning or at night? If you're looking to get a good night's sleep, take L-theanine at night. For example, if you need help getting to sleep, you won't want to drink caffeinated tea at night, so you should opt for caffeine-free or herbal tea before bed.
“A combination of magnesium with L-Theanine (an amino acid) will ease the tension in the physical body and settle anxiety as L-Theanine supports the production of calming neurotransmitters. Take this combination now twice daily rather than waiting until you feel tense or anxious.”
While L-theanine is often used to alleviate anxiety, it can increase feelings of anxiety in some people. This is extremely rare but is most likely caused by the changes the L-theanine has on how the brain deals with serotonin and GABA.
Although there are no reported side effects from taking L-theanine, consuming large amounts of green tea can cause nausea, irritability, and GI upset because of the caffeine content.
l-theanine (γ-glutamylethylamide), an amino acid in green tea, has been shown to affect brain functions by relieving stress disorders, improving mood, and maintaining normal sleep.
A study on the effects of theanine on the liver showed that when it was administered to mice prior to ethanol exposure, it fully restored the mice's baseline liver functions. These results bode well for drinkers, since they imply that theanine can help prevent ethanol-induced liver injury.
The answer is yes! Because of its natural calming effects, L-Theanine can have a significant impact on your ability to fall asleep quickly and sleep deeply*. The amino acid can be especially helpful when combined with GABA and other natural calming supplements.
The L-theanine and caffeine combination improved both speed and accuracy of performance of the attention-switching task at 60 min, and reduced susceptibility to distracting information in the memory task at both 60 min and 90 min.
L-theanine Dosage and Use
L-theanine is one of my most common treatments for anxiousness and may help any of the three sub-types. It's usually taken in doses from 50-100 mg once or twice daily. In more severe cases, it may be taken 3 or 4 times per day. It is not habit forming like many anti-anxiety medications.
L-theanine, on the other hand, promotes relaxation and stress reduction without sedating. L-theanine can help foster a state of calm, attentive wakefulness. L-theanine has positive effects on both the mental and physical symptoms of stress, including lowering heart rate and blood pressure.
L-theanine has been historically reported as a relaxing agent, prompting scientific research on its pharmacology. Animal neurochemistry studies suggest that L-theanine increases brain serotonin, dopamine, GABA levels and has micromolar affinities for AMPA, Kainate and NMDA receptors.
L-theanine may reduce brain fog symptoms such as memory problems and delayed reaction time when taken as a supplement. It may also help reduce stress and improve sleep, which may relieve brain fog symptoms.
In a randomized controlled trial in patients with mild cognitive impairment, L-theanine taken with green tea extract for 16 weeks had no significant effect on memory and attention, though a trend for an improvement in memory was seen midway through the trial [1].
Conclusion: Our study suggests that chronic (8-week) l-theanine administration is safe and has multiple beneficial effects on depressive symptoms, anxiety, sleep disturbance and cognitive impairments in patients with MDD.
While L-Theanine is an amino acid, Rhodiola Rosea is an adaptogen. That's what makes it a great product to work alongside L-Theanine. Rhodiola Rosea helps the body be better able to cope with the stress that comes on a physical level. It helps support the body, while L-Theanine and GABA help to support the mind.
L-Theanine is an amino acid found in green tea leaves that temporarily produces mental relaxation without any sedating effects. It's the perfect companion to a B-complex vitamin, enhancing its already stress reducing and mood enhancing properties.
Adding l-theanine to your morning routine is quick, easy and, for many, makes a notable difference to their day. What's even better is that you can enjoy theanine on an empty stomach, with or without food, and it's effectiveness won't be inhibited.
L-theanine, caffeine and their combination seem to improve sustained attention and overall cognitive performance in children with ADHD, possibly via decreasing mind wandering during exertion of attention.
However, the original claims relating to the calming effect of l-theanine show it is usually noted within 40–60 min after l-theanine ingestion at a dose of 50–200 mg. Effective dose of 200 mg of l-theanine in the present study to induce relaxation is well consistent with the work of Kobayashi et al.