I’d been taking GABA before [my spine] surgery and really didn’t want to have to discontinue it. My surgeons have always insisted on me going off supplements in the week or more leading to surgery.
I’m sure they don’t want to have to be well versed on everything a person might be taking so they only allow prescription drugs.
The morning after the spine surgery, I had an anxiety attack and insisted on being allowed to take my GABA, which helped.
GABA helps tremendously in preventing me waking in the middle of the night or early morning in a panic. I take 500mg of NOW GABA sublingually before bed. I also take tryptophan and magnesium glycinate at bedtime and believe they help a bit, but GABA is the most effective.
It would be really helpful to be able to take needed supplements right up to surgery time.
LM posted this in response to my blog: GABA and theanine for sedation, anxiety, and cognition in preoperative surgical patients (a randomized controlled study) (more on this below).
She also said “This would be really nice” if doctors knew this! I’m with her – it would be really nice if doctors were aware of this research and allowed patients to use GABA and theanine right up to surgery and right afterwards too. This is especially relevant given the fact that GABA lowers blood pressure and high blood pressure is common after surgery (more on this below too).
Hopefully this GABA/theanine surgery research and the GABA/high blood pressure research will start to shift perspectives and guidelines, especially since increased anxiety also impacts the outcome of surgery. I share more on the research and my insights below.
The study: GABA and theanine are calming before a surgical procedure and don’t cause too much drowsiness
If you missed the blog post and study I shared above, here is the overview:
This novel study was planned to study and compare the effects of L-theanine and GABA on anxiety, sedation, and cognition in preoperative patients posted for major elective surgeries under general anesthesia.
The conclusion is that:
GABA and L-theanine result in effective preoperative anxiolysis with minimal sedation and improvement of cognitive skills.
In other words, both these amino acids are calming before a surgical procedure, don’t cause too much drowsiness and improve cognition.
Study participants used 500 mg GABA and 200 mg of theanine – but dosing is unique
The authors had the study participants use 500 mg GABA and 200 mg of theanine. Both were used as capsules and swallowed. If you’ve been following my work, you’re aware that I find sublingual (or powder or liposomal or topical) use of GABA to be more effective than swallowing a capsule. For this reason it’s possible that using a lower dose sublingually may be as effective or possibly even more effective.
As always, dosing of GABA (and other amino acids such as theanine) is individualized to the unique needs of the person. Ideally, the person has figured out their optimal dose for easing anxiety in their day to day life before going in for surgery. They may find that a higher dose is needed the weeks leading up to surgery and the day of surgery.
As LM shared, she uses “500mg of NOW GABA sublingually before bed”, and presumably started with a lower dose and worked up to 500mg i.e. the optimal dose for her unique needs. It’s very individualized with no-one-size fits all i.e. someone else may get similar benefits with 125mg.
You can read the entire blog post here: GABA and theanine for sedation, anxiety, and cognition in preoperative surgical patients (a randomized controlled study).
Why you are told to stop all supplements prior to surgery
My understanding is that being told to stop all supplements prior to surgery is because of potential concerns about effects on bleeding, anesthesia and blood pressure. Unfortunately, the study didn’t address this possible issue. This article has some information on supplements (and some meds) to stop before surgery/anesthesia stating:
you may need to take a break from some supplements and medications that can interfere with anesthesia. Surgical complications could include heart or bleeding problems, prolonged anesthesia effects, or increased blood pressure.
GABA lowers blood pressure which may be helpful right after surgery
High blood pressure is common after surgery and can have far-reaching implications. According to this paper, “Postoperative hypertension often begins ~10–20 minutes after surgery and may last up to 4 hours. If left untreated, patients are at increased risk for bleeding, cerebrovascular events, and myocardial infarctions.”
This is another reason GABA may actually be helpful to use right up to surgery and right afterwards – it lowers blood pressure.
This paper, United States Pharmacopeia (USP) Safety Review of Gamma-Aminobutyric Acid (GABA), published in 2021, reports the results of a 4-week study that investigated the tolerability of GABA supplementation in mildly hypertensive but otherwise healthy adults:
The authors first established an optimum dose in mildly hypertensive subjects (SBP/systolic blood pressure between 130 and 180 mm Hg) who were randomized to receive oral doses of GABA at 0 (placebo), 20, 40, or 80 mg/day for 4 weeks.
An intake of 80 mg/day of GABA was associated with a significant reduction of the BP in adults with mild hypertension, and no adverse effects were reported.
A subsequent study evaluated long-term effects of GABA at 80 mg daily versus placebo in mildly hypertensive subjects for 8 weeks:
At the end of the 8-week study, SBP [systolic blood pressure i.e. the top number] and DBP [diastolic blood pressure i.e. the bottom number] were on average 5% lower in all the subjects who received 80 mg/day of GABA compared to participants in the placebo group whose blood pressure levels remained above normal.
This is a substantial reduction when 80 mg of GABA a day is considered a very low dose. I typically have my anxious clients start with 125mg GABA and increase from there. They may end up using 125 mg GABA 3 or 4 times a day and sometimes 250 mg a few times a day or 500 mg once a day like LM is doing.
Additional resources when you are new to using GABA and other amino acids as supplements
As always, I use the symptoms questionnaire to figure out if low GABA may be an issue. The low GABA symptoms include: physical tension, overwhelm, fears, anxiousness, stiff and tense muscles, sleep issues, feelings of panic and stress-eating and drinking.
If you suspect low levels of any of the neurotransmitters and do not yet have my book, The Antianxiety Food Solution – How the Foods You Eat Can Help You Calm Your Anxious Mind, Improve Your Mood, and End Cravings, I highly recommend getting it and reading it before jumping in and using amino acids on your own so you are knowledgeable. And be sure to share it with the practitioner/health team you or your loved one is working with.
There is an entire chapter on the amino acids and they are discussed throughout the book in the sections on gut health, gluten, blood sugar control (this is covered in an entire chapter too), sugar cravings, anxiety and mood issues.
The book doesn’t include product names (per the publisher’s request) so this blog, The Antianxiety Food Solution Amino Acid and Pyroluria Supplements, lists the amino acids that I use with my individual clients and those in my group programs.
If, after reading this blog and my book, you don’t feel comfortable figuring things out on your own (i.e. doing the symptoms questionnaire and respective amino acids trials), a good place to get help is the GABA QuickStart Program (if you have low GABA symptoms). This is a paid online/virtual group program where you get my guidance and community support.
If you are a practitioner, join us in The Balancing Neurotransmitters: the Fundamentals program. This is also a paid online/virtual program with an opportunity to interact with me and other practitioners who are also using the amino acids.
Wrapping up and your feedback
I appreciate LM for sharing how GABA helps her and her post surgery experience with anxiety and using GABA. It is wonderful that she was able to take her GABA supplement for the anxiety attack after her surgery. Let’s hope this research increases awareness amongst surgeons.
I’d love to hear from you – have you been told to stop all supplements before surgery, including GABA and other amino acids.
And do you feel increasingly anxious before surgery and other medical procedures and would GABA help i.e. is GABA and/or theanine part of your calming repertoire on a day-to-fay basis?
Have you ever discussed either of these two amino acids – GABA or theanine – with your surgeon or anesthetist prior to surgery and were they open to you using them before and right after surgery?
If you’re a practitioner do you recommend GABA and theanine to your anxious clients/patients and as a surgeon or anesthetist would you consider these amino acids in the future, based on this research?
Feel free to share your experiences and ask your questions below.
Thank you for all the work you do in this area! I am on a low dose of Amlodipine (5 mg at night), and had also been using Gaba 6 mg or L-theanine 250 mg for anxiety, particularly in relation to high peak cortisol levels upon awakening in the morning. Then I had a couple of light-headed dizzy spells, and stopped using both after an Emerg doctor thought they were related to vasal vagal issues.
So my question is: Can folks on b.p. medication safely use Gaba/L-theanine?
Thanks so much,
Karen Lewis
Vancouver, BC
Canada
Karen
GABA and theanine help to lower high blood pressure so the prescribing doctor needs to be aware and monitoring; often the BP medication can be lowered (with doctor’s approval of course)
Too much GABA can also cause these symptoms – was it really only 6 mg or is that a typo?
I would love to hear how Gaba 6 mg or L-theanine 250 mg helped – did it reduce morning anxiety and shift high cortisol?
Keep in mind Seriphos helps with high cortisol. Feel free to search the blog for more on this
Hi Trudy,
I take GABA FOR MY ANXIETY. Sometimes I feel a tingling sensation in my fingers about 10 minutes after taking 2 capsules.
If I only take 1 capsule it does not stop the unwanted thoughts.
Does this tingling mean I am injuring my peripheral nervous system or is this just a side-effect that is not dangerous to my body.
Thank you
Karen
Too high a dose can do this – please share which product and how much? Swallowed or sublingual/capsule opened?
And how does it help – eases anxiety and stops the unwanted thoughts? Any other benefits?
I have severe anxiety and experienced a week where I could not sleep more than an hour or two a night. I was a zombie. I started using Somnium, a glob about the size of a large pea as directed and slept like a baby. Eight hours straight without getting up. Here is the rub. After a few weeks, I began to have daily migraine auras at about 9:30 am every morning when I used to have one every few months. This went on for six days. It dawned on me that it might be the GABA, so I reduced the amount to the size of a BB. Although I am not sleeping as soundly, I have not had a migraine since. Have you ever heard of anyone having a reaction like this? Thanks
Andrea
Sorry to hear but glad to hear Somnium helped so much initially. I have not had this feedback with Somnium or any other GABA products. The research is mixed (likely because of biochemical individuality) but GABA/glutamate imbalance is common with migraines so I’d suspect other ingredients in the product and have a client in this situation trial a GABA-only product sublingually/powder/liposomal or another GABA cream.
Beserene is a GABA/theanine cream with some herbs and the feedback I’ve been getting for sleep is encouraging. I’ve been experimenting with it personally too and love it ( I’ve also used Somnium with success). Here is my link for Beserene https://healthygut.com/trudyinstant (you can save 15% with this link).
Well done to you for being methodical and reducing the amount used.
Thank you so much for the prompt reply. I did not realize that there were other ingredients in Somnium. I have occasionally used GABA Calm during the day and never gotten the migraine. I will definitely try the Beserene. Thank you for all you do for us “calmness seekers”.
Andrea
Please keep us posted (and a reminder to always read labels
)
Thank you for the reminder about labels but I am very careful about them. Looking at the ingredients in Somnium, I can see nothing that might be a trigger. All of the ingredients seem to be fillers except the GABA. Whatever it was that caused the migraines, they have stopped since I cut the dose way down. I ordered the Beserene and am looking forward trying it. Thank you again for your input.
Andrea
Glad to hear the migraines have stopped. Please keep us posted on how you do with BeSerene
Kind Greetings Trudy. I take tryptophan and 5htp with some success for my insomnia but I can still wake up many times. My blood pressure is on the low side and I’m thinking about adding a small amount (100- 200 mg) of GABA to see if it could help. I will watch my blood pressure but I imagine this small amount won’t change it.
R.I.
I seldom see issues with GABA and low blood pressure but it’s always good to watch
If you find you need help and guidance, I walk folks thru how to safely and effectively use GABA in the GABA QuickStart program https://www.anxietynutritioninstitute.com/gabaquickstart/ and there is a Serotonin Quickstart program launching soon.