Colchicine Pharmacology

On this episode I discuss colchicine pharmacology, adverse effects, drug interactions, and pharmacokinetics.

Colchicine ultimately works by reducing the activity of neutrophils that help contribute to pain and inflammation associated with gout.

Colchicine does have some drug interactions with medications and grapefruit juice via CYP3A4.

The most common dose limiting side effect of colchicine is diarrhea.

Colchicine can be used as a potential alternative to NSAIDs or corticosteroids in the management of a gout flare.

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Probenecid Pharmacology

Patients with G6PD deficiency who are taking probenecid are at increased risk for hemolytic anemia.

In a patient taking probenecid, they need to have adequate kidney function for the drug to work.

GI upset is likely the most common adverse effect of probenecid. It can be given with food.

Probenecid can raise the concentrations of many common antibiotics like penicillins and cephalosporins.

Remember that there are many medications that can oppose the beneficial effects of probenecid. Thiazides, niacin, and some immunosuppressants can raise uric acid.

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I discuss important drug interactions on the podcast, be sure to check out my latest project which is a 200+ page book on managing drug interactions in primary care.

Allopurinol Pharmacology

I break down the mechanism of action, side effects, and important drug interactions you need to know. I give you a sense of what things you might actually encounter in practice when working with patients who take allopurinol.

Allopurinol is a top 200 drug. Remember to subscribe to the website for the Free 31 page PDF where I give you three highly testable pearls on the top 200 drugs.

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I hope you enjoy this episode the pharmacology of allopurinol!