Abrupt Lisinopril Discontinuation Does Not Cause Rebound Hypertension
Abrupt withdrawal of lisinopril has not been associated with a rapid increase in blood pressure or a significant increase in blood pressure compared to pretreatment levels. 1
Key Evidence from FDA Drug Label
The FDA-approved prescribing information for lisinopril explicitly states that "abrupt withdrawal of lisinopril has not been associated with a rapid increase in blood pressure, or a significant increase in blood pressure compared to pretreatment levels." 1 This is fundamentally different from medications like beta-blockers and clonidine, which carry significant rebound hypertension risk.
Mechanism Explains the Absence of Rebound
Lisinopril works by inhibiting ACE and suppressing the renin-angiotensin-aldosterone system. 1 When discontinued, the body simply resumes normal angiotensin II production without the sympathetic surge seen with centrally-acting agents. 1 The effective half-life of 12 hours means drug effects dissipate gradually rather than abruptly. 1
Clinical Evidence Supporting Safe Discontinuation
- Perioperative discontinuation studies show that stopping ACE inhibitors (including lisinopril) before surgery does not cause rebound hypertension, though it may reduce intraoperative hypotension risk. 2, 3
- Ambulatory surgery data from 526 patients randomized to continuation versus discontinuation of ACEIs/ARBs found no increased prevalence of preoperative hypertension when these medications were stopped on the day of surgery. 4
- Withdrawal studies demonstrate that after ACE inhibitor discontinuation, blood pressure rises within 48 hours but plateaus at levels lower than baseline, not above baseline (which would indicate rebound). 5
Critical Distinction: ACE Inhibitors vs. Beta-Blockers and Clonidine
This is where clinical confusion often occurs. The 2025 AHA/ACC guidelines explicitly warn that "abrupt pre-operative discontinuation of BB or clonidine may result in rebound hypertension and is potentially harmful." 2 However, this warning does not apply to ACE inhibitors like lisinopril. 2
- Beta-blockers and clonidine cause withdrawal syndromes with sympathetic overactivity (nervousness, tachycardia, severe hypertension) occurring 36-72 hours after cessation. 6, 7
- Clonidine specifically requires gradual tapering to prevent life-threatening hypertensive crisis from norepinephrine surge. 7
- Lisinopril does not share this mechanism and can be stopped without tapering. 1
Heart Failure Context Requires Different Consideration
While lisinopril discontinuation does not cause rebound hypertension, the 2013 ACC/AHA Heart Failure guidelines note that "abrupt withdrawal of treatment with an ACE inhibitor can lead to clinical deterioration and should be avoided" in patients with heart failure with reduced ejection fraction (HFrEF). 8 This refers to worsening heart failure symptoms, not rebound hypertension. 8
Common Pitfalls to Avoid
- Do not confuse ACE inhibitor withdrawal with beta-blocker or clonidine withdrawal—only the latter cause true rebound hypertension. 2, 7, 6
- Do not taper lisinopril when discontinuing for hypertension alone—the FDA label confirms this is unnecessary. 1
- Do consider gradual discontinuation in HFrEF patients to prevent heart failure decompensation (not rebound hypertension). 8
- Monitor blood pressure after discontinuation, as it will gradually return toward baseline over days to weeks, but will not overshoot baseline. 5
Practical Management
When discontinuing lisinopril:
- For hypertension alone: Stop abruptly without taper; blood pressure will rise gradually over 48 hours to 1 week but remain below pretreatment levels initially. 5, 1
- For heart failure: Consider gradual withdrawal or substitution with ARB to prevent clinical deterioration. 8
- Perioperatively: Discontinuation on day of surgery is safe regarding blood pressure, though continuation is also reasonable. 2, 3
- Never confuse with clonidine or beta-blocker discontinuation, which require mandatory tapering. 2, 7