The doctor also identified key combinations that, according to him, should be avoided. The first involves grapefruit and either statins or blood pressure medication. Grapefruit juice blocks the enzyme that breaks down the drug, potentially causing the medication’s concentration in the blood to triple; notably, even a glass of juice consumed a full day before taking the pill can trigger this effect.
The second combination involves milk and antibiotics, as calcium slows the absorption of tetracyclines and fluoroquinolones by 30–50%. Dairy products should be consumed either two hours before taking the medication or after doing so.
Additionally, tannins found in coffee and tea reduce iron absorption by up to 60%, while combining paracetamol with alcohol poses a risk to liver health.
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