Green Tea and Vitamin B12 for Depression Experiment

two people sitting down talking over coffeeI had a chance to sit down with a friend of my dads who had been through depression for many years himself. During our conversation, he mentioned that he had started drinking green tea and taking vitamin B12 shots. What he found was that after a while the depression slowly started to go away.

After a time he noticed that he wasn’t suffering from the depression anymore. As our conversation continued he mentioned how he had contact through a few of his friends who had found the same thing to be true for them.

Drinking green tea and taking B12 vitamins had helped to extremely lessen the degree of their depression.

As he talked to a friend at a cafe who had invited him out to discuss just that topic, a person sitting behind them happened to overhear their conversation.

As the people sitting behind them got up to leave she stopped and told them that she couldn’t help but overhear the conversation and that she had done the same thing and found the same results.

So I decided that I would try this same method. My depression is severe and chronic, it’s there every day all day but at varying levels.

Day one for me was August 17, 2018. I started my day off with the B12 at 1,000 mcg, along with my other meds, and a cup of green tea.

I noticed that for the first three-quarters of the day I seemed to feel a little better, was a little more energetic and the depressive thoughts and emotions were a little less.

However, this could have just been a coincidence and I was having a better day than normal.

I plan to try and track each week to see if I notice any difference not only in how I feel and my thoughts but also in my motivation, interest, and productivity.

woman pouring green tea into cups

So Why Green Tea?

“Green tea consumption may help to increase the levels of serotonin in your brain, according to an article published in 2009 in the ‘American Journal of Clinical Nutrition.’” The active ingredient most likely responsible for this effect is L-theanine, an amino acid found in green tea that can cross the blood-brain barrier and may be able to get the brain to produce more serotonin. Serotonin itself cannot cross the blood-brain barrier and must be produced in the brain if it is to be used in the brain.” – HealthUnlocked

Green tea has L-Theanine in it which is an amino acid. This produces a calming, soothing effect on the individuals who drink it.

The more green tea you drink in a daytime the better results you will find. A study showed that those who drank 4 cups of green tea had a much better result in reduced depressive symptoms than those who only drank one or two cups.

I don’t know that I can drink 4 cups of green tea in a day, as I find a side effect to be dry mouth. My plan, though, is to drink one large cup in the morning and another in the afternoon along with the B12 vitamins.

That leads to the next question.

woman holding pill and glass of waterWhy Vitamin B12?

According to Mayo Clinic, B-12 and other B vitamins play a role in producing brain chemicals that affect mood and other brain functions.

This, I am hoping, will be an added benefit of the green tea getting my brain to release more serotonin. I will keep a daily journal during this trial period and after a month or two will do another check in and post on what results, if any, I found from this little experiment.

If you’ve tried this before I’d love to hear about your experience in the comments below. I would also like to hear other people’s thoughts on the subject so please feel free to leave a comment.

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Richard Bailey

I have suffered from severe chronic depression for just over two decades. I have gone through many treatments and all medications that the Dr.'s I work with have available to them but have been treatment resistant. I hope to help people and inform people on mental health and wellness through this blog.


  1. I’ve been taking Vitamin-B12 supplements for a while now, but recently I started using a Vitamin B-12 vape pen as I heard it was more effective. I take it for general health and for epilepsy prevention. My seizures are unpredictable so I’ll probably never fully be able to gauge the pen’s effectiveness, but I figured it couldn’t hurt!

    • I’m sorry you have to deal with epilepsy. I would never have guessed that the B12 vitamin would be helpful with that. There’s so much I don’t know about what vitamins are good for what types of issues. I also didn’t know it was available as a vape, that’s really interesting.

      • I had never heard of using it as a vape either; it was actually my mom who introduced me to it. The store where my mom works was selling them, and the woman who owns the store is very into natural health.

        • Very interesting. I will have to check around town to see if any of the nutritional stores sell them. I have been using the sublingual pill and it works pretty well.

    • Thank you, I’ve already noticed some changes with the depression so it will be interesting to see how I feel after 1 month

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