Selenium and Magnesium oxide drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Selenium (selenium) and Magnesium oxide (magnesium). Common drug interactions include gastrointestinal disorder among females and blood glucose increased among males.

The phase IV clinical study analyzes what interactions people have when they take Selenium and Magnesium oxide. It is created by eHealthMe based on reports of 80 people who take the same drugs from the FDA, and is updated regularly.

What is Selenium?

Selenium has active ingredients of selenium. It is often used in vitamin supplementation. eHealthMe is studying from 5,314 Selenium users. Check the latest studies of Selenium.

What is Magnesium oxide?

Magnesium oxide has active ingredients of magnesium. It is often used in migraine. eHealthMe is studying from 19,022 Magnesium oxide users. Check the latest studies of Magnesium oxide.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Aug, 25, 2026

80 people who take Selenium and Magnesium oxide together, and have interactions are studied.

Selenium and Magnesium oxide drug interactions.

What are the common drug interactions of Selenium and Magnesium Oxide, by gender? *:

female:

Gastrointestinal disorder (functional problems of gastrointestinal tract)
Herpes virus infection
Hyperhidrosis (abnormally increased sweating)
Infusion site scar
Infusion site swelling
Kidney infection
Muscle injury
Nephrolithiasis (calculi in the kidneys)
Oral pain
Polymyalgia rheumatica (pain in many muscles)

male:

Blood glucose increased
Dyspnoea (difficult or laboured respiration)
Aortic disorder
Diarrhoea
Disease progression
Dizziness
Haemoglobin decreased
Hypertension (high blood pressure)
Hyponatraemia (abnormally low level of sodium in the blood; associated with dehydration)
Intermittent claudication

What are the common drug interactions of Selenium and Magnesium Oxide, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

Allergy to chemicals
Insomnia (sleeplessness)

40-49:

Diarrhoea
Dizziness
Drug intolerance (drug sensitivity)
Epistaxis (bleed from the nose)
Fatigue (feeling of tiredness)
Gastrooesophageal reflux disease (stomach contents (food or liquid) leak backwards from the stomach into the oesophagus)
Haematochezia (passage of stools containing blood)
Headache (pain in head)
Musculoskeletal discomfort (discomfort in the body's muscles, joints, tendons, ligaments and nerves)
Nasal congestion (blockage of the nasal passages usually due to membranes lining the nose becoming swollen from inflamed blood vessels)

50-59:

Cystitis (inflammation of the wall of the bladder)
Herpes simplex (herpes simplex is a common viral infection)
Small intestinal obstruction (blockage in small intestine)
Asthma
Bronchitis (inflammation of the mucous membrane in the bronchial tubes)
Gastrointestinal haemorrhage (bleeding gastrointestinal tract)
Headache (pain in head)
Infection
Injection site bruising
Injection site erythema (redness at injection site)

60+:

Diarrhoea
Nausea (feeling of having an urge to vomit)
Decreased appetite
Neoplasm malignant (cancer tumour)
Renal disorder (kidney disease)
Somnolence (a state of near-sleep, a strong desire for sleep)
Stress
Appetite disorder (abnormal eating habits)
Back pain
Bursa disorder

What are the existing conditions these people have? *

Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 9 people, 11.25%
Pain: 8 people, 10.00%
Nausea And Vomiting: 6 people, 7.50%
Nausea (feeling of having an urge to vomit): 6 people, 7.50%
Immunodeficiency Common Variable: 6 people, 7.50%
Stress And Anxiety: 6 people, 7.50%
High Blood Pressure: 6 people, 7.50%
Diarrhea: 6 people, 7.50%
Thrombosis (formation of a blood clot inside a blood vessel): 5 people, 6.25%
Short-Bowel Syndrome (a condition in which the body cannot absorb enough fluids and nutrients because part of the small intestine is missing): 5 people, 6.25%

* Approximation only. Some reports may have incomplete information.

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