Can too much GABA cause tremors?
GABAA receptor α1 subunit knock-out mice tremble at ∼18 Hz (Kralic et al., 2002), suggesting that a tremor can arise from either too little or too much GABAergic transmission throughout the brain.
Meanwhile, too much GABA means not enough brain activity and can lead to hypersomnia or daytime sleepiness.
Side Effects of GABA Supplements
You may experience a tingling or jittery feeling after taking GABA tablets.
Medications that increase the duration of opening of gamma-aminobutyric acid (GABA)-A receptors are most consistently associated with tremor improvement. Interestingly, drugs that increase GABA availability have not been associated with improved tremor.
The NNHPD monograph for Cognitive Function Products recommends a daily intake of 50–3000 mg GABA that does not exceed 750 mg per single dose; it also says to consult a healthcare practitioner for use of products providing 300 mg/day or more when GABA is used for longer than 4 weeks [48].
There is no cure for ET. Supplements have been used in treating symptoms of essential tremor, with generally little success. These include caprylic acid (also called octanoic acid), thiamin (vitamin B1), cannabidiol (CBD), GABA (gamma-aminobutyric acid), branched-chain amino acids, magnesium and even alcohol.
2 However, high daily doses of GABA (5 to 10 grams) may result in a burning sensation in your throat and low blood pressure. The upper recommended intake is typically 3 grams per day—with no more than 750 milligrams per dose.
Health Risks
GABA is produced naturally in the body, and GABA supplementation is considered safe. There are no reported drug interactions.
GABA might lower blood pressure. Taking GABA along with medications that lower blood pressure might cause blood pressure to go too low. Monitor your blood pressure closely.
- Mood Issues (such as anxiety and depression)
- Irritability.
- Restlessness.
- Poor Sleep.
- Seizures.
- Epilepsy.
What neurotransmitter causes tremors?
The gamma-aminobutyric acid (GABA) hypothesis in essential tremor (ET) implies a disturbance of the GABAergic system, especially involving the cerebellum.
Certain neurologic and mental health conditions are thought to be related to times when GABA messaging activity (“signaling”) isn't in balance and working as it should. Decreased GABA activity may contribute to: Anxiety and mood disorders.

There's no cure for essential tremor, but there are ways to treat it. The main treatment options are medications, assistive devices, botulinum toxin, deep brain stimulation and focused ultrasound.
Vitamin B-12
The B vitamin that carries the most impact on tremors is B12. Low levels have been shown to increase tremors in individuals with essential tremor (ET) or Parkinson disorder.
However, tremors and other movement disorders are associated with vitamin deficiency, most vitamins B1, B6 and especially B12. B12 is very important for keeping your nervous system in good working order.
Clinical studies suggest that taking up to 120 milligrams (mg) of GABA per day as supplements for 12 weeks is unlikely to cause adverse effects. People should take care when using them with other drugs. Using them with medications for high blood pressure or epilepsy may increase the impact of those drugs.
One organization recommends against daily doses of GABA over 750 mg or use of GABA supplements for more than four weeks without first talking with a health professional.
GABA Dosage Guide
The typical dosage for general stress relief is around 750–800 milligrams daily, divided up into three to four doses over the course of the day. For anxiety, some recommend taking between 250 milligrams to 650 milligrams three times daily, for a total of 750–1,950 milligrams.
Focused Ultrasound for Essential Tremor
The focused ultrasound procedure focuses sound waves inside the brain to disrupt faulty brain circuits that cause unwanted movement. Unlike traditional brain surgery, it does not require incisions nor opening the skull.
It helps to regulate nerve impulses and muscle contractions. So, a deficiency of magnesium in the body will lead to muscle cramps and may increase one's risk for osteoporosis. For good magnesium content in the body or to ease the symptoms of essential tremors, consider taking a supplement of 200mg to 400mg daily.
What deficiencies cause tremors?
Both adults and infants deficient in vitamin B12 may present with chorea, tremor, myoclonus, Parkinsonism, dystonia, or a combination of these, which may precede diagnosis or become apparent only a few days after parenteral replacement therapy has begun.
What are GABA's main drawbacks? Oral GABA supplementation appears to be fairly safe and well-tolerated. Although not well-studied, GABA may lower blood pressure which could lead to hypotension (low blood pressure).
Best time to take GABA
People who are using GABA to enhance the quality of their sleep are best to take a single, larger dose half an hour before bed.
The following doses have been found in studies and should be verified by a doctor first. If you wish to treat your anxiety with GABA supplements, consider taking 100-200mg. If your goal is to treat high blood pressure, consider taking at most 10mg of supplements.
For this reason, it's best to play it safe and not use GABA if you are pregnant or breastfeeding. Interactions. Not enough is known about how GABA may interact with drugs, foods, or other herbs and supplements, but use with caution if taking with blood pressure medications.
Much higher dosages are sometimes recommended by alternative practitioners for treating anxiety or insomnia, as high as 1000 mg daily, in the (probably vain) hope that some tiny amount of this orally ingested GABA might make it into the brain.
Side Effects
Some people have reported tingling on the surface of the skin for a few minutes after the intake of GABA. This may be likened to the well- known “niacin flush.” GABA may also induce a slight shortness of breath, which is also transient and is experienced by a small percentage of people.
Generally, tremor is caused by a problem in the deep parts of the brain that control movements. Most types of tremor have no known cause, although there are some forms that appear to be inherited and run in families.
- Eat a healthy diet. ...
- Get 7 to 8 hours of sleep per night.
- Avoid energy drinks or caffeine. ...
- Get regular exercise. ...
- Drink water. ...
- Reduce stress as much as possible.
- Avoid drugs and alcohol.
- Try relaxation methods like progressive muscle relaxation.
The exact cause of ET is unknown. Research suggests that the part of the brain that controls muscle movements does not work correctly in people with ET. If an ET occurs in more than one member of a family, it is called a familial tremor. This type of ET is passed down through families (inherited).
What is the best natural cure for tremors?
- Avoid caffeine. Caffeine and other stimulants can increase tremors.
- Use alcohol sparingly, if at all. Some people notice that their tremors improve slightly after they drink alcohol, but drinking isn't a good solution. ...
- Learn to relax. ...
- Make lifestyle changes.
Results At day 15, both gabapentin and propranolol demonstrated significant and comparable efficacy in reducing tremor from baseline in all tremor measures.
Gabapentin (structure similar to GABA) can be used as a monotherapy or as an add-on therapy for treatment of ET. [7–9] It is started at 300 mg 3 times daily, and titrated up to 1200–1800 mg/day. The drug is usually well tolerated with few side effects (sedation, irritability, ataxia, weight gain).
I have noticed that as I take B12 injections myself, my hand and leg tremors stop or greatly subside. I use two different B12 (active forms) injections: Methylcobalamin (1ml) and Adenosylcobalamin (1ml). Every (average) 4 days I take one of them and this frequency helps at the moment.
Avoid drinks or foods with caffeine if they make your tremors worse. These include tea, cola, coffee, and chocolate. Wear a heavy bracelet or watch. This adds a little weight to your hand.
Causes of Tremors in the Elderly
For example, tremors can result from multiple sclerosis, stroke, liver failure, kidney failure, PTSD, alcohol abuse, hyperthyroidism, depression, Parkinson's disease, traumatic brain injury, and others.
Reversible Parkinsonism is also seen in vitamin D intoxication. Some increase in tremor was evident in the patient during the overdose but the tremor gradually became less intense with increased time without the vitamin supplement. The most serious symptoms occurred about two weeks after cessation of the overdose.
Health Risks
GABA is produced naturally in the body, and GABA supplementation is considered safe. There are no reported drug interactions.
GABA-transaminase deficiency is a brain disease (encephalopathy) that begins in infancy. Babies with this disorder have recurrent seizures (epilepsy), uncontrolled limb movements (choreoathetosis), exaggerated reflexes (hyperreflexia), weak muscle tone (hypotonia), and excessive sleepiness (hypersomnolence).
GABAA receptor stimulation is usually but not always anticonvulsant. GABAB receptor stimulation may facilitate absence seizures and related primary generalized seizures.
Which neurologic drugs have an effect on GABA?
Of particular importance are drugs that modulate GABAA receptor complex, such as benzodiazepines, barbiturates, neuroactive steroids, intravenous and inhalational anesthetics, and ethanol.