Omega-3 and Effexor drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Omega-3 (cod liver oil) and Effexor (venlafaxine hydrochloride). Common drug interactions include fatigue among females and blood creatinine increased among males.

The phase IV clinical study analyzes what interactions people have when they take Omega-3 and Effexor. It is created by eHealthMe based on reports of 33 people who take the same drugs from the FDA, and is updated regularly.

What is Omega-3?

Omega-3 has active ingredients of cod liver oil. It is often used in high blood cholesterol. eHealthMe is studying from 3,482 Omega-3 users. Check the latest studies of Omega-3.

What is Effexor?

Effexor has active ingredients of venlafaxine hydrochloride. It is often used in depression. eHealthMe is studying from 99,493 Effexor users. Check the latest studies of Effexor.

On Jul, 12, 2026

33 people who take Omega-3 and Effexor together, and have interactions are studied.

What are the common drug interactions of Omega-3 and Effexor, by gender? *:

female:

Fatigue (feeling of tiredness)
Breast cancer stage iii
Headache (pain in head)
Infusion related reaction
Asthenia (weakness)
Body temperature increased
Drug ineffective
Nephrolithiasis (calculi in the kidneys)
Pain
Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect)

male:

Blood creatinine increased
Blood pressure increased
Sleep apnoea syndrome (a sleep-related disorder in which the effort to breathe is diminished or absent)
Suicidal ideation
Cough
Dyspnoea (difficult or laboured respiration)
Headache (pain in head)
Insomnia (sleeplessness)
Lacrimation increased
Lyme disease (a bacterial infection that is spread to humans by infected ticks)

What are the common drug interactions of Omega-3 and Effexor, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

Breast cancer stage iii
Breast cancer metastatic
Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect)
Seizure (abnormal excessive or synchronous neuronal activity in the brain)
Sleep apnoea syndrome (a sleep-related disorder in which the effort to breathe is diminished or absent)
Suicidal ideation

40-49:

Lyme disease (a bacterial infection that is spread to humans by infected ticks)

50-59:

Musculoskeletal discomfort (discomfort in the body's muscles, joints, tendons, ligaments and nerves)
Sleep disorder
Allergy to animal
Anaemia (lack of blood)
Botulism (food poisoning caused by botulinum growing)
Clostridium difficile colitis (inflammation of colon by clostridium difficile bacteria infection)
Contrast media allergy (reaction associated with the use of intravenous contrast material during radiology)
Dermatitis contact (skin reaction (dermatitis) resulting from exposure to allergens)
Diplopia (double vision)
Discomfort

60+:

Fatigue (feeling of tiredness)
Asthenia (weakness)
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Arthritis (form of joint disorder that involves inflammation of one or more joints)
Breast cancer stage iii
Bronchitis (inflammation of the mucous membrane in the bronchial tubes)
Cough
Dementia alzheimer's type (loss of mental ability with alzheimer's symptom)
Dyspnoea (difficult or laboured respiration)
Dysstasia (difficulty in standing)

What are the existing conditions these people have? *

Stress And Anxiety: 6 people, 18.18%
Pain: 6 people, 18.18%
Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 5 people, 15.15%
Immunodeficiency Common Variable: 5 people, 15.15%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 4 people, 12.12%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 4 people, 12.12%
Ulcerative Colitis (inflammatory bowel disease (ibd). it causes swelling, ulcerations, and loss of function of the large intestine): 4 people, 12.12%
Breast Cancer: 3 people, 9.09%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 3 people, 9.09%
Dermatitis Atopic (inflammatory, chronically relapsing, non-contagious and pruritic skin disorder): 3 people, 9.09%

* Approximation only. Some reports may have incomplete information.

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