cholestyramine vs tetracycline
Side-by-side comparison of cholestyramine and tetracycline. 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
Drug Interactions Cholestyramine resin may delay or reduce the absorption of concomitant oral medication such as phenylbutazone, warfarin, thiazide diuretics (acidic) or propranolol (basic), as well as tetracycline, penicillin G, phenobarbital, thyroid and thyroxine preparations, estrogens and progestins and digitalis.
Recommendation: Space out these medications by several hours to ensure the antibiotic is properly absorbed.
Questran
Sumycin
Cholestyramine is a medicine that helps lower high cholesterol levels in your blood. It works by preventing your body from absorbing cholesterol in the intestines.
Tetracycline is an antibiotic medicine. It fights bacteria in your body to treat different types of infections.
This medicine is used with a diet to lower high cholesterol, especially LDL cholesterol (the "bad" cholesterol). It may also help if you have high triglycerides, but it's not the best choice if high triglycerides are your main problem. Lowering cholesterol helps reduce your risk of heart disease.
Tetracycline treats many kinds of infections caused by bacteria. This includes infections of the lungs, skin, urinary tract, and some sexually transmitted infections. It can also treat acne and other less common infections like brucellosis, tularemia, or cholera. Your doctor will decide if tetracycline is right for your infection.
Cholestyramine is a resin that binds to bile acids in your intestines. Bile acids help digest fats, including cholesterol. By binding to bile acids, cholestyramine prevents them from being reabsorbed, so your body uses cholesterol to make more bile acids, which lowers cholesterol levels in your blood.
Tetracycline works by stopping bacteria from growing and multiplying. It prevents the bacteria from making proteins they need to survive. This helps your body's immune system fight off the infection.
- • Constipation
- • Nausea
- • Vomiting
- • Diarrhea
- • Loss of appetite
- • Stomach upset
- Diarrhea 1,631
- Tiredness 878
- Feeling sick to your stomach 783
- Joint pain 622
- Head pain 543
- Drug Hypersensitivity 151
- Hypersensitivity 123
- Pneumonia 103
- Pain In Extremity 93
- Arthralgia 90
Since cholestyramine can affect how your body absorbs other medicines, take other drugs at least 1 hour before or 4 to 6 hours after taking cholestyramine.
Tetracycline can cause permanent tooth discoloration if used during tooth development. This means it should not be used in pregnant women or children under 8 years old. Tetracycline can also make your skin more sensitive to the sun, so avoid prolonged sun exposure.
Tell your doctor if you are pregnant or plan to become pregnant. Cholestyramine may affect how you absorb vitamins, so your doctor may recommend supplements. Talk to your doctor about the risks and benefits of taking this medicine while breastfeeding.
Tetracycline can harm an unborn baby. You should not take tetracycline if you are pregnant. Tetracycline can also pass into breast milk and may affect the baby. Talk to your doctor about safe alternatives if you are breastfeeding.
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How to Read This cholestyramine vs tetracycline Comparison
cholestyramine is classified in the Bile Acid Sequestrant drug class, while tetracycline sits within the Tetracycline 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, cholestyramine has 4,457 submissions while tetracycline has 560. 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 cholestyramine can stick to tetracycline in your stomach, which prevents the antibiotic from being absorbed into your body. this could make the antibiotic less effective.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between cholestyramine and tetracycline - always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.