Magnesium and L-theanine drug interactions - from FDA reports

Drug interactions are reported among people who take Magnesium and L-theanine together. This study is created by eHealthMe based on reports of 15 people who take Magnesium and L-theanine from FDA, and is updated regularly.

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On Dec, 14, 2018

15 people who take Magnesium, L-theanine are studied.

Number of reports submitted per year:

Magnesium and L-theanine drug interactions.

Most common drug interactions by gender *:

  1. Depression
  2. Drug ineffective
  3. Dry mouth
  4. Dry skin
  5. Emotional disorder
  6. Feeling abnormal
  7. Gait disturbance
  8. Mental disorder (a psychological term for a mental or behavioural pattern or anomaly that causes distress or disability)
  9. Muscle twitching
  10. Pain
  1. Drug ineffective
  2. Fatigue (feeling of tiredness)
  3. Feeling abnormal

Most common drug interactions by age *:







  1. Activities of daily living impaired
  2. Amenorrhoea (absence of a menstrual period in a woman of reproductive age)
  3. Diabetes mellitus (diabetes, caused by a deficiency of the pancreatic hormone insulin)
  4. Drug ineffective
  5. Dry eye (lack of adequate tears)
  6. Dry mouth
  7. Fatigue (feeling of tiredness)
  8. Fibromyalgia (a long-term condition which causes pain all over the body)
  9. Gait disturbance
  10. Hepatic steatosis (fatty liver disease)
  1. Suicidal ideation
  2. Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)
  3. Emotional disorder
  4. Impaired work ability
  5. Tachycardia (a heart rate that exceeds the range of 100 beats/min)
  6. Thyroid disorder (thyroid diseases)
  7. Acne (skin problems that cause pimples)
  8. Adrenal disorder
  9. Agitation (state of anxiety or nervous excitement)
  10. Arthralgia (joint pain)
  1. Alopecia (absence of hair from areas of the body)
  2. Arthralgia (joint pain)
  3. Blood thyroid stimulating hormone increased
  4. Dry eye (lack of adequate tears)
  5. Dry mouth
  6. Dry skin
  1. Eye pruritus (eye itching)
  2. Foreign body sensation in eyes (feeling of something in eye)
  3. Injection site bruising
  4. Injection site haemorrhage (bleeding from injection site)
  5. Lacrimation increased
  6. Visual impairment
  7. Dry eye (lack of adequate tears)
  8. Eye infection
  9. Eye pain

* Approximation only. Some reports may have incomplete information.

FDA reports used in this study

Do you take Magnesium and L-theanine?

You are not alone:

Related studies


Magnesium has active ingredients of magnesium. It is often used in constipation. (latest outcomes from Magnesium 45,408 users)


L-theanine has active ingredients of theanine. It is often used in stress and anxiety. (latest outcomes from L-theanine 156 users)

Browse by gender and age

Female: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Male: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Interactions between Magnesium and drugs from A to Z
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Interactions between L-theanine and drugs from A to Z
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Browse all drug interactions of Magnesium and L-theanine
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What would happen?

Predict new side effects and undetected conditions when you take Magnesium and L-theanine (5,501 reports studied)

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NOTE: The study is based on active ingredients and brand name. Other drugs that have the same active ingredients (e.g. generic drugs) are NOT considered.

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only, and has not been supported by scientific studies or clinical trials unless otherwise stated. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

You may report adverse side effects to the FDA at or 1-800-FDA-1088 (1-800-332-1088).

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.

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