Must know deadly drug combination 

Metronidazole + Alcohol : Symptoms include severe nausea, vomiting, flushing, fast heartbeat, and headaches. You should avoid alcohol during treatment and for at least 72 hours after the last dose.

Iron + Antacids: Significantly reduces iron absorption because iron requires an acidic environment to dissolve.

Gentamicin + furosemide: Carries a significant risk of severe, often irreversible, ear and kidney damage, including sensorineural hearing loss, vertigo, and acute kidney injury

Digoxine + furosemide: Furosemide, a diuretic, lowers potassium and magnesium levels, which can make the heart more sensitive to digoxin, leading to serious arrhythmias.

Aspirin + warfarin:Greatly increases the risk of serious bleeding.

Ceftriaxone + calcium : Create fatal, insoluble precipitates in the lungs and kidneys

Not every dangerous drug reaction comes from the disease, sometimes it comes from the prescription itself.

Suggest other drug combination to avoid.

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NSAIDS and Anti-coagulants in general are deadly combinations to be avoided.

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ACE inhibitors and potassium supplements increase the risk of hyperkalemia.

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Informative !

  • Sildenafil + Nitrates (nitroglycerin)

  • Linezolid + SSRIs (fluoxetine/sertraline)

  • MAO inhibitors + Tyramine-rich food are also dangerous combinations

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Very important and clinically relevant topic.Drug interactions are often underestimated, even though some combinations can lead to serious complications.

Other Drug Combinations to Avoid:

• Sildenafil + Nitroglycerin → severe hypotension

• ACE inhibitors + potassium supplements → hyperkalemia

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Statins(Simvastatin) + certain antifungals (Ketoconazole) is a strictly contraindicated drug interaction I know about.It can cause severe muscle toxicity and a dangerous condition rhabdomyolysis.

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Tetracycline antibiotics + Calcium - Calcium ions bind to the tetracycline molecules and form insoluble complex that cannot be absorbed into the blood stream through gastrointestinal trcat.

Clarithromycin + Calcium channel blockers - Increases the risk of hypotension.

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Such an informative post. Thanks for sharing :slight_smile:

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Informative post.

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Very useful information.

Deadly drug combination i know is

Metformin + alcohol use : can cause lactic acidosis.

Paracetamol ( overdosed) + cold / pain medication : increased liver toxicity.

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Deep knowledge includes in this article!

Very interesting

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Thanks for highlighting this information which is a very important aspectswhen delivering health care in prescribing medicines without this forethought of drug interaction.

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Great post! Helpful in memorizing points at one place.

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