fludrocortisone vs rifampin
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Side-by-side comparison of fludrocortisone and rifampin. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
minor Known Drug Interaction
Barbiturates, phenytoin, or rifampin – increased metabolic clearance of fludrocortisone acetate because of the induction of hepatic enzymes.
Florinef
Rifadin
Fludrocortisone is a medicine that helps your body balance salt and fluids. It is used when your adrenal glands don't make enough of certain hormones.
Rifampin is an antibiotic medicine. It fights bacteria in your body to treat infections.
This medicine is used to treat Addison's disease and salt-losing adrenogenital syndrome. These conditions happen when your adrenal glands don't make enough of certain hormones. Fludrocortisone helps your body hold onto salt and water, which is important for these conditions.
Rifampin treats tuberculosis (TB) and helps eliminate the bacteria that cause meningitis from your nose and throat. It is important to use rifampin only for infections that are proven or strongly suspected to be caused by bacteria. This helps to prevent bacteria from becoming resistant to the medicine.
Fludrocortisone is a mineralocorticoid. It works by helping your body to retain sodium and water. This helps to increase blood volume and blood pressure.
Rifampin works by stopping bacteria from growing and multiplying. It does this by blocking a key enzyme that the bacteria need to make proteins. This helps your body fight off the infection.
- • High blood pressure
- • Swelling in your hands, feet, or ankles
- • Enlarged heart
- • Heart failure
- • Loss of potassium
- • Heartburn
- • Upset stomach
- • Loss of appetite
- • Nausea
- • Vomiting
- Feeling tired 146
- Falling down 144
- Feeling lightheaded 135
- Feeling sick to your stomach 129
- Death 126
- Drug Interaction 970
- Drug Reaction With Eosinophilia And Systemic Symptoms 727
- Nausea 628
- Condition Aggravated 550
- Pyrexia 541
This medicine may cause you to retain too much sodium and water, leading to high blood pressure, swelling, and heart problems. Tell your doctor right away if you have any of these symptoms. This medicine can also interact with other medicines, so be sure to tell your doctor about all the medicines you are taking.
Rifampin can cause liver problems. Tell your doctor right away if you have yellowing of the skin or eyes, dark urine, or stomach pain. Rifampin can also cause blood problems. Tell your doctor if you have unusual bleeding or bruising.
Talk to your doctor if you are pregnant or breastfeeding before taking this medicine. It is not known if this medicine will harm your unborn baby. It is also not known if this medicine passes into breast milk.
Tell your doctor if you are pregnant or plan to become pregnant. Rifampin can make birth control pills less effective, so use other forms of birth control. Talk to your doctor if you are breastfeeding.
How to Read This fludrocortisone vs rifampin Comparison
fludrocortisone is classified in the Mineralocorticoid drug class, while rifampin sits within the Rifamycin Antibiotic class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, fludrocortisone has 680 submissions while rifampin has 3,416. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known minor interaction flagged in FDA labeling, attributed to rifampin causes your liver to break down fludrocortisone much faster than normal. this makes the fludrocortisone less effective in your body.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for fludrocortisone or rifampin.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.