Drug interactions with lisinopril
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Lisinopril Drug Interactions: Key Insights
Interactions with Antidiabetic Drugs (Metformin, Gliclazide, DPP-4 Inhibitors)
Lisinopril can interact with several antidiabetic medications. When combined with metformin, lisinopril alters the dissolution and release of both drugs in the gastrointestinal tract. Specifically, metformin’s release is reduced, while lisinopril’s release increases at certain pH levels, which could affect how much of each drug is absorbed and their effectiveness in the body 15.
With gliclazide, another antidiabetic drug, chronic use of lisinopril can enhance gliclazide’s blood glucose-lowering effect. This suggests that dose adjustments or careful monitoring may be needed when these drugs are used together to avoid excessive lowering of blood sugar .
Additionally, combining lisinopril with DPP-4 inhibitors (like alogliptin) increases the risk of angioedema, a potentially serious allergic reaction. This risk is especially high in elderly patients and women, so close monitoring is recommended when these drugs are prescribed together .
Interactions with Cardiovascular Drugs (Amlodipine, Nifedipine, Furosemide, Aspirin)
Lisinopril is often used with other blood pressure medications. When taken with nifedipine, there is no significant pharmacokinetic or pharmacodynamic interaction, meaning the drugs do not affect each other’s absorption or action, and their blood pressure-lowering effects are simply additive . Similarly, combinations with amlodipine are considered safe and effective for treating hypertension .
However, in patients with chronic kidney disease, lisinopril is frequently prescribed with furosemide and calcium carbonate. These combinations have a higher likelihood of causing nephrotoxicity (kidney damage), so they require careful monitoring, especially in patients with multiple health conditions and those taking many medications .
When combined with low-dose aspirin, lisinopril shows a lower rate of serious drug interactions compared to some other ACE inhibitors. This combination may be better tolerated, but the risk of drug interactions increases with the number of medications a patient takes (polypharmacy) .
Interactions with Muscle Relaxants (Tizanidine)
A rare but serious interaction can occur when lisinopril is taken with tizanidine, a muscle relaxant. This combination can cause profound hypotension (dangerously low blood pressure), which may be life-threatening. If these drugs are used together, patients should be closely monitored for signs of low blood pressure .
Other Potential Interactions
Lisinopril may also interact with sertraline, an antidepressant, potentially increasing the risk or severity of psoriasis. This highlights the importance of monitoring for unexpected side effects when combining lisinopril with other medications, especially those affecting the nervous system or immune response .
Conclusion
Lisinopril is commonly used with other medications, especially in patients with multiple health conditions. It can interact with antidiabetic drugs, other blood pressure medications, diuretics, aspirin, and certain muscle relaxants. Some interactions may require dose adjustments or close monitoring to avoid adverse effects such as low blood sugar, kidney damage, angioedema, or severe hypotension. Healthcare providers should carefully review all medications a patient is taking to minimize the risk of harmful drug interactions with lisinopril.
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