Fish oil and Efudex drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Fish oil (fish oil) and Efudex (fluorouracil). Common drug interactions include osteoporosis among females and squamous cell carcinoma among males.

The phase IV clinical study analyzes what interactions people have when they take Fish oil and Efudex. It is created by eHealthMe based on reports of 37 people who take the same drugs from the FDA, and is updated regularly.

What is Fish oil?

Fish oil has active ingredients of fish oil. It is often used in high blood cholesterol. eHealthMe is studying from 112,933 Fish oil users. Check the latest studies of Fish oil.

What is Efudex?

Efudex has active ingredients of fluorouracil. It is often used in actinic keratosis. eHealthMe is studying from 1,391 Efudex users. Check the latest studies of Efudex.

On Jul, 07, 2026

37 people who take Fish oil and Efudex together, and have interactions are studied.

What are the common drug interactions of Fish Oil and Efudex, by gender? *:

female:

Osteoporosis (bones weak and more likely to break)
Peripheral swelling
Skin ulcer
Thyroid neoplasm (tumour of thyroid)
Tongue ulceration (ulcers on tongue)
Transient acantholytic dermatosis (a skin condition that causes the appearance of small, red spots on chest and back)
Pyrexia (fever)
Squamous cell carcinoma (a cancer of a kind of epithelial cell)
Chapped lips (cracking, fissuring, and peeling of the skin f lip)
Dizziness

male:

Squamous cell carcinoma (a cancer of a kind of epithelial cell)
Diarrhoea
Adverse event
Alopecia (absence of hair from areas of the body)
Arteriosclerosis (thickening and hardening of arteries)
Arthralgia (joint pain)
Atrial fibrillation (fibrillation of the muscles of the atria of the heart)
Back pain
Blister (small pocket of fluid within the upper layers of the skin caused by forceful rubbing (friction), burning, freezing, chemical exposure)
Bone pain

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

n/a

40-49:

Chills (felling of cold)
Citrobacter infection (infection by citrobacter (bacteria))
Fatigue (feeling of tiredness)
Infection
Oropharyngeal pain
Pyrexia (fever)
Urinary tract infection bacterial

50-59:

Alopecia (absence of hair from areas of the body)
Hair colour changes
Hair disorder

60+:

Squamous cell carcinoma (a cancer of a kind of epithelial cell)
Diarrhoea
Stomatitis (inflammation of mucous membrane of mouth)
Chapped lips (cracking, fissuring, and peeling of the skin f lip)
Lip dry
Nasal congestion (blockage of the nasal passages usually due to membranes lining the nose becoming swollen from inflamed blood vessels)
Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect)
Alopecia (absence of hair from areas of the body)
Arteriosclerosis (thickening and hardening of arteries)
Arthralgia (joint pain)

What are the existing conditions these people have? *

Hiv Infection: 8 people, 21.62%
Multiple Myeloma (cancer of the plasma cells): 6 people, 16.22%
Skin Cancer: 3 people, 8.11%
Nausea (feeling of having an urge to vomit): 3 people, 8.11%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 2 people, 5.41%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 2 people, 5.41%

* Approximation only. Some reports may have incomplete information.

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