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

Summary:

Drug interactions are reported among people who take Selenium (selenium) and Niacin (niacin). Common drug interactions include back pain among females and anxiety among males.

The phase IV clinical study analyzes what interactions people have when they take Selenium and Niacin. It is created by eHealthMe based on reports of 86 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 Niacin?

Niacin has active ingredients of niacin. It is often used in high blood cholesterol. eHealthMe is studying from 9,008 Niacin users. Check the latest studies of Niacin.

On Jul, 19, 2026

86 people who take Selenium and Niacin together, and have interactions are studied.

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

female:

Back pain
Constipation
Diarrhoea
Fall
Infection
Fatigue (feeling of tiredness)
Sinusitis (inflammation of sinus)
Dyspnoea (difficult or laboured respiration)
Epistaxis (bleed from the nose)
Food craving

male:

Anxiety
Dizziness
Headache (pain in head)
Oedema peripheral (superficial swelling)
Osteopenia (a condition where bone mineral density is lower than normal)
Osteoporosis (bones weak and more likely to break)
Rash generalised (rash on most of body parts)
Dyspnoea (difficult or laboured respiration)
Gait disturbance
Haemorrhoids (a swollen vein or group of veins in the region of the anus)

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

Presyncope
Sinus pain

40-49:

Back pain
Burning sensation
Deep vein thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis)
Inflammation
Mental disorder (a psychological term for a mental or behavioural pattern or anomaly that causes distress or disability)
Muscular weakness (muscle weakness)
Oedema peripheral (superficial swelling)
Pain in extremity
Pelvic pain
Skin discolouration (change of skin colour)

50-59:

Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect)
Weight increased
Allergic sinusitis
Biliary colic
Blindness unilateral
Dyspnoea (difficult or laboured respiration)
Gait disturbance
Headache (pain in head)
Hypoaesthesia (reduced sense of touch or sensation)
Immunoglobulins increased

60+:

Anxiety
Depression
Thrombocytopenia (decrease of platelets in blood)
Vomiting
Balance disorder
Foot fracture
Hyperhidrosis (abnormally increased sweating)
Osteoporosis (bones weak and more likely to break)
Rash generalised (rash on most of body parts)
Constipation

What are the existing conditions these people have? *

Pain: 8 people, 9.30%
Fibromyalgia (a long-term condition which causes pain all over the body): 7 people, 8.14%
Immunodeficiency Common Variable: 6 people, 6.98%
Sinus Disorder (disease of sinus): 5 people, 5.81%
Diarrhea: 5 people, 5.81%
Arthropathy: 5 people, 5.81%

* Approximation only. Some reports may have incomplete information.

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