Lisinopril is an ACE inhibitor (brand names Prinivil and Zestril) that relaxes and widens blood vessels, lowering blood pressure and easing the heart’s workload. It’s used to treat high blood pressure, help prevent strokes, kidney problems, and heart attacks, treat heart failure, and improve survival after a heart attack. It’s taken once daily by mouth, with or without food, in strengths ranging from 2.5 mg up to 40 mg. Here’s what to watch for and 10 practical tips to reduce long-term side effect risk.
Key Takeaways
- Lisinopril should be avoided throughout pregnancy, not just the 2nd and 3rd trimesters — discontinue as soon as pregnancy is planned or detected.
- Green tea can reduce lisinopril absorption by roughly two-thirds, a well-documented interaction that can weaken blood pressure control.
- Photosensitivity (increased sun sensitivity) is a real, currently recognized side effect of lisinopril.
- Lisinopril taken alone doesn’t meaningfully raise uric acid or worsen gout — but the combination pill (lisinopril/HCTZ) does, via its HCTZ component, so check which one you’re actually taking.
- Regular NSAID use, high potassium intake, and rapid position changes all carry documented, ongoing risks worth monitoring with your doctor.
Possible Side Effects to Know
Dizziness or lightheadedness, especially when standing up.
Signs of kidney injury: reduced urination, swelling of the feet and ankles, fatigue, shortness of breath.
Signs of a liver problem: yellowing of the skin or eyes, loss of appetite, nausea, vomiting, fatigue, and stomach aches.
Signs of high potassium: nausea, chest pain, weakness, irregular heartbeat, unsteadiness.
Signs of an allergic reaction (call your doctor immediately): swelling of the lips, face, tongue, or throat, difficulty breathing, wheezing, rash, or itching.
A dry, persistent cough — one of the more common side effects, which can appear days, weeks, months, or even years after starting the medication. Mention it to your doctor if it develops.
Less common side effects: headache, impotence, blood disorders, ringing in the ears, and blurry vision.
Pregnancy Warning
ACE inhibitors like lisinopril should not be used during pregnancy. Use during the second and third trimesters carries a well-documented risk of fetal and neonatal complications, including reduced kidney function, low amniotic fluid, and related developmental problems. Current guidance also notes a smaller but real risk during the first trimester — one large cohort study found a higher rate of cardiovascular and central nervous system birth defects with first-trimester ACE inhibitor exposure compared to no exposure. Because of this, the recommendation is to avoid lisinopril throughout pregnancy where possible, and to discontinue it and switch to an alternative as soon as pregnancy is planned or detected, rather than waiting until later trimesters.
Drug Interactions
Several medications can interact with lisinopril; this isn’t an exhaustive list, so it’s worth reviewing your specific medications with your doctor or pharmacist.
10 Tips to Help Avoid Long-Term Side Effects
1. Rise Slowly
Especially in the first few days and weeks of treatment, and any time you change position from lying to sitting or sitting to standing, take your time. Standing up too quickly can cause dizziness and increase fall risk.
2. Avoid Alcohol
Drinking alcohol while taking lisinopril isn’t recommended, since it can further lower blood pressure on top of the medication’s effect.
3. Watch Potassium Intake
Lisinopril can raise blood potassium levels. If you’re on this medication long term, be cautious with salt substitutes (many are potassium-based) and with high-potassium foods like bananas, oranges, potatoes, tomatoes, and dark leafy greens — moderation matters more than elimination, and your doctor can advise on what’s appropriate for you specifically.
4. Be Aware of the Green Tea Interaction
This one is well documented: green tea can significantly reduce how much lisinopril your body actually absorbs — one study found a reduction of roughly two-thirds in blood levels — which can make the medication less effective at controlling blood pressure. This is a bigger concern with regular, concentrated green tea consumption or extracts than with an occasional cup. If you drink green tea regularly, it’s worth discussing with your doctor or pharmacist and monitoring your blood pressure at home.
5. Get Regular Monitoring
Your doctor should check your potassium levels and kidney function regularly while you’re on lisinopril, since both can be affected by the medication over time.
6. Start Low and Go Slow in Older Adults
When starting this medication in older adults, the dose should be increased gradually. Titrating too quickly raises the risk of side effects and a sudden, excessive drop in blood pressure.
7. Monitor Blood Sugar
Lisinopril may affect blood sugar levels. If you notice changes in your blood or urine sugar test results, or have questions, check with your doctor.
8. Know the Signs of Intestinal Angioedema
If you develop stomach pain or cramps while on lisinopril, particularly if it’s a new symptom, it’s worth considering a rarer condition called intestinal angioedema, which can cause exactly these symptoms. This is a recognized, though uncommon, ACE inhibitor-related condition distinct from the more familiar facial/throat swelling.
9. Sun Sensitivity Is a Real, Documented Effect
Lisinopril can increase photosensitivity, making skin more prone to reacting to sun exposure — this is a genuine, currently recognized side effect, not an outdated concern. If you notice rashes or unusual reactions with sun exposure, sun protection (sunscreen, protective clothing, limiting direct exposure) is a reasonable precaution, and it’s worth mentioning to your doctor.
10. Be Cautious With Regular NSAID Use
Regular use of NSAIDs like ibuprofen alongside lisinopril increases the risk of kidney injury — a combination worth discussing with your doctor if you rely on NSAIDs regularly for pain.
A Note on an Outdated Claim: Gout and Uric Acid
Some older sources suggest lisinopril and other ACE inhibitors should be used cautiously in people with gout due to concerns about raising uric acid levels. Current evidence doesn’t really support this as a significant concern for lisinopril taken alone — data from the large ALLHAT trial found lisinopril was associated with a slightly (non-significantly) lower gout risk compared to a thiazide diuretic, and multiple studies have found ACE inhibitors don’t meaningfully raise uric acid the way diuretics do.
That said, this comes with an important caveat covered in the next section: if you’re taking the combination pill rather than lisinopril alone, the gout caution becomes genuinely relevant again — just for a different reason.
Are You Taking Plain Lisinopril, or the Lisinopril/HCTZ Combination?
Lisinopril is also sold combined with hydrochlorothiazide (HCTZ), a diuretic, in a single pill (brand names Zestoretic or Prinzide). This combination is prescribed when lisinopril alone doesn’t fully control blood pressure. It’s worth checking which one you’re actually taking, since HCTZ adds its own distinct considerations on top of everything above:
- Gout and uric acid: Unlike lisinopril alone, HCTZ is well-documented to raise uric acid levels and can trigger or worsen gout, particularly at doses of 25 mg or higher. The 2020 American College of Rheumatology guidelines specifically recommend switching away from HCTZ to an alternative antihypertensive when feasible for patients with gout. So if you’re on the combination pill and have gout, this is a genuinely relevant conversation to have with your doctor — it’s just the HCTZ component driving the concern, not the lisinopril.
- Photosensitivity: While lisinopril alone carries some sun sensitivity risk (see above), HCTZ has a more strongly established link to photosensitivity and, with long-term use, increased risk of certain skin cancers (particularly squamous cell carcinoma). Sun protection is worth taking seriously either way, but especially on the combination product.
- Potassium: Interestingly, these two components can partially offset each other here — lisinopril tends to raise potassium, while HCTZ tends to lower it. This doesn’t mean potassium monitoring becomes unnecessary; your doctor still needs to track it, since the net effect varies by individual.
- Blood sugar: HCTZ, like lisinopril, can also affect blood sugar levels, so this is worth monitoring regardless of which version you’re on.
If you’re not sure which one you’re taking, check your pill bottle or ask your pharmacist — the combination product will list both ingredients (lisinopril and hydrochlorothiazide) on the label.
Frequently Asked Questions
Is it true that lisinopril is only dangerous during certain trimesters of pregnancy?
Not entirely — while the risks are best documented for the 2nd and 3rd trimesters (affecting fetal kidney function and amniotic fluid), current research also shows a smaller but real increased risk of birth defects with 1st-trimester exposure. The current recommendation is to avoid lisinopril throughout pregnancy and switch medications as soon as pregnancy is planned or detected.
Should I stop drinking green tea if I take lisinopril?
Not necessarily for an occasional cup, but regular green tea consumption or concentrated extracts can meaningfully reduce how much lisinopril your body absorbs, potentially weakening blood pressure control. If you drink it regularly, discuss it with your doctor and monitor your blood pressure at home.
Does lisinopril make gout worse?
Lisinopril taken alone doesn’t meaningfully raise uric acid — large studies, including the ALLHAT trial, found it associated with a slightly lower (not higher) gout risk compared to a thiazide diuretic. However, if you’re on the combination pill (lisinopril/HCTZ), the HCTZ component does raise uric acid and can worsen gout, so the caution is real for that product specifically.
How do I know if I’m taking plain lisinopril or the combination pill?
Check your pill bottle label or ask your pharmacist. The combination product (brand names Zestoretic or Prinzide) will list both lisinopril and hydrochlorothiazide as ingredients, while plain lisinopril lists only lisinopril.
What should I do if I develop a persistent dry cough on lisinopril?
Mention it to your doctor. It’s one of the more common side effects and can appear days, weeks, or even months to years after starting the medication — your doctor may switch you to a different class of blood pressure medication, like an ARB, which typically doesn’t cause this side effect.
10 Tips Checklist
- ☐ Rise slowly from sitting or lying down
- ☐ Avoid alcohol while taking lisinopril
- ☐ Watch potassium intake and avoid potassium-based salt substitutes without medical guidance
- ☐ Limit regular green tea consumption or discuss it with your doctor
- ☐ Get potassium and kidney function checked regularly
- ☐ Ensure older adults start on a low dose with gradual titration
- ☐ Monitor blood sugar if applicable
- ☐ Report new stomach pain or cramps to your doctor
- ☐ Use sun protection given the photosensitivity risk
- ☐ Avoid regular NSAID use without talking to your doctor
Disclaimer: This article is for general informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Never stop or adjust your lisinopril dose without consulting your doctor. If you experience signs of an allergic reaction, including swelling of the lips, face, tongue, or throat, or difficulty breathing, seek emergency medical care immediately. This article reflects information current as of publication; medical guidance can change, so confirm details with your doctor or pharmacist.