This article is for informational purposes only and does not constitute medical advice. Never stop or change amlodipine without your doctor's guidance. Always consult your prescribing physician before changing your blood pressure medication.
Amlodipine has a 30 to 50-hour half-life. That changes everything about stopping it. Unlike beta-blockers or clonidine, amlodipine does not cause rebound hypertension when you stop. Your blood pressure slowly drifts back to its untreated baseline over 7 to 10 days, not 48 hours. That makes amlodipine one of the gentler blood pressure medications to discontinue, but it does not mean you should stop on your own.
Why Amlodipine Is Different From Other BP Drugs
Most antihypertensive medications fall into two camps when you stop them:
- Short half-life drugs (lisinopril at 12 hours, metoprolol tartrate at 3 to 7 hours): BP rises within 24 to 48 hours of the last dose
- Rebound-prone drugs (clonidine, beta-blockers): can cause sympathetic overactivity, racing heart, and dangerously high BP after abrupt stop
Amlodipine sits in a third category. According to StatPearls (NCBI Bookshelf), amlodipine has a half-life of 30 to 50 hours. That long washout window means the drug is still active in your body days after the last pill.
A 2023 review in PMC on amlodipine in hypertension management states it directly: "On discontinuation of amlodipine, blood pressure levels slowly return to baseline after 7 to 10 days with no evidence of a rebound effect."
If you have ever missed a dose of amlodipine and noticed nothing happened, you have already experienced this. Amlodipine forgives a missed day in a way that lisinopril or metoprolol does not.
What "Cold Turkey" Actually Looks Like With Amlodipine
If you stopped amlodipine today, here is roughly what happens:
- 48 hours after last dose: Drug levels still meaningful. A crossover study summarized in the PMC review found systolic pressure was still 17 mmHg below baseline and diastolic 12 mmHg below baseline at this point.
- Days 3 to 5: Drug levels falling. BP starts climbing toward your untreated baseline.
- Days 7 to 10: Steady state reached. BP at or near your pre-treatment numbers.
This is gentler than the 48-hour rise window with lisinopril. But "gentler" is not "safe." If your hypertension was severe and you abruptly stop, your BP will eventually return to dangerous levels. The drift just buys you time, not a free pass.
The Edema Trap (and Why It Misleads People)
Here is something most cold-turkey guides skip. The most common amlodipine side effect is dose-dependent peripheral edema (ankle and leg swelling). Per StatPearls, this happens because amlodipine relaxes blood vessels asymmetrically and lets fluid pool.
When you stop amlodipine, the edema fades. Patients often interpret that as "I feel better off it." They do not. The BP that the drug was controlling is still there, working in the background. The swelling is gone, but the cardiovascular risk has come back.
If swelling is your main complaint, talk to your doctor about a different drug or a lower dose. Do not interpret "less swelling" as a green light to stop.
Is Amlodipine in the Withdrawal Drug Class?
No. The 2005 review of antihypertensive withdrawal in International Journal of Clinical Practice (Karachalios et al.) names clonidine, beta-blockers, methyldopa, and guanabenz as the high-risk withdrawal-syndrome drugs. Dihydropyridine CCBs like amlodipine are not on that list.
The 2025 AHA/ACC hypertension guideline similarly singles out clonidine and beta-blockers as drugs that explicitly require tapering to avoid rebound. Amlodipine is not named in that section.
So if you are tapering amlodipine, you are managing your blood pressure curve, not warding off a sympathetic reaction. That is a much less scary problem to solve.
Example 4 to 8-Week Amlodipine Taper Calendar
Below is an example tapering schedule modeled on the Reeve et al. 2024 deprescribing protocol (a 25 to 50 percent reduction every 4 weeks). This is illustrative only. Your doctor must approve and adjust based on your BP readings, dose, and risk profile.
| Week | Phase | Example dose action | What to monitor |
|---|---|---|---|
| Weeks 1 to 4 | Step 1 reduction | Reduce by ~50% (e.g., 10 mg to 5 mg, or 5 mg to 2.5 mg if a half-tablet is available) | Daily AM and PM BP for first 7 days. Then daily AM. Watch for ankle swelling decrease (normal). |
| Weeks 5 to 8 | Off medication | Stop entirely | Daily BP for 14 days, then alternate days. Restart if BP exceeds 140/90 across 3 readings in 7 days. |
| Week 9 and beyond | Sustained monitoring | None | Weekly BP check, plus a clinic visit at month 3 and month 6. |
Notice this is shorter than a typical lisinopril taper. The reason is amlodipine's long half-life. Each step has built-in pharmacokinetic cushioning that the doctor does not need to add with extra wait time.
If your starting dose is 10 mg or you are on combination therapy (amlodipine plus an ACE inhibitor or ARB), your doctor will usually keep the schedule longer and taper one drug at a time.
Who Should Not Stop Amlodipine On Their Own
Some patients are not good candidates for stopping, even with the gentle pharmacokinetics. The Reeve et al. 2024 deprescribing review warns against unmonitored stops if you have any of the following:
- History of stroke, heart attack, or heart failure
- Diabetes with kidney complications
- BP that has not been consistently below 130/80 for several months
- You are on combination therapy and unsure which pill is doing what
- You have unstable angina or coronary artery disease (amlodipine treats both)
About one in three patients who try to deprescribe BP medication need to restart, per a Cochrane review of 6 trials with 1,073 participants summarized in the Reeve et al. review. That is true even with amlodipine's gentle exit. Monitor closely.
If you are starting amlodipine rather than stopping, our guide to the best time to take amlodipine covers timing. And our hub article on what happens if you stop taking blood pressure medication covers the broader category.
Warning Signs You Need to Restart
| Sign | What it means | Action |
|---|---|---|
| BP over 140/90 on 3 readings in a week | BP drift, not yet emergency | Call your doctor within 24 to 48 hours |
| Headache, vision changes, confusion | Possible hypertensive crisis | Call your doctor or 911 immediately |
| Chest pain, shortness of breath | Possible cardiac event (especially if amlodipine was for angina) | Call 911 |
| Returning chest tightness or angina | Possible angina recurrence | Call your doctor same day |
Amlodipine is sometimes prescribed not just for blood pressure but for chronic stable angina or vasospastic angina. If that is your situation, watch for chest tightness even more carefully when stopping. Stopping a drug that was preventing angina can let those episodes come back.
For broader context, see medications you should never skip and whether you can stop taking your medication.
How Pillo Helps With a Slower Taper
Amlodipine's long half-life makes the timing forgiving, but it also makes the taper feel slow. Easy to drift on. Pillo sets persistent alarms for each dose change so you do not miss the week-5 step. It logs each BP reading you enter alongside your medication record, giving your doctor a clean trail when they review.
Download Pillo on Google Play.
Frequently Asked Questions
Can I stop taking amlodipine cold turkey?
Pharmacologically, amlodipine is one of the safer BP medications to stop abruptly. The 2023 amlodipine review found no rebound effect, and BP drifts back to baseline over 7 to 10 days rather than spiking in 48 hours. That said, you still should not stop on your own. About 1 in 3 patients who attempt deprescribing need to restart, and your doctor needs to monitor that decision in real time.
How long does amlodipine stay in your system?
Amlodipine has a half-life of 30 to 50 hours. It typically takes about 7 to 10 days to fully clear, which is why the BP-lowering effect persists for days after your last dose.
Does amlodipine cause rebound hypertension?
No. The amlodipine clinical management review states there is no evidence of a rebound effect. BP returns to your untreated baseline gradually, not as a sudden spike. Beta-blockers and clonidine are the BP drugs that DO cause rebound. Amlodipine does not.
How do I taper off amlodipine safely?
Most evidence-based deprescribing protocols use a 25 to 50 percent reduction every 4 weeks. For amlodipine, that often works out to 4 to 8 weeks total. Lower starting doses can be tapered faster. Always do this with your doctor monitoring BP.
Why does my swelling go away when I stop amlodipine?
Peripheral edema is a known dose-dependent side effect of amlodipine, per StatPearls. When the drug clears, the swelling goes with it. That is not a sign you no longer need BP medication. It is a sign that this specific drug caused the swelling. Talk to your doctor about whether a different agent might give you BP control without the edema.
This article provides general information about amlodipine and is not a substitute for professional medical advice. Never stop or change amlodipine without your doctor's guidance. Consult your prescribing physician about your specific medications and health conditions.
Reviewed under our Medical Review Policy.
