Key Takeaways
- Steady daily use of mirtazapine, sold as Remeron, creates physical dependence, which is a medical condition treated by tapering and not a sign of addiction.
- Stopping mirtazapine suddenly, or taking it every other day, often brings dizziness, vivid dreams, electric shock sensations, anxiety, nausea, and sweating within two or three days, and its label recommends a gradual reduction instead.
- The last part of the taper feels harder than the first because a small cut in milligrams near the bottom removes a large share of the drug’s remaining effect, so the reductions must shrink as the dose falls.
- A careful taper is a series of smaller and smaller reductions, each followed by a pause long enough for the nervous system to settle before the next cut is considered.
- Scored 15 mg and 30 mg tablets and a 7.5 mg generic cover the first stretch, and a compounded liquid measured with an oral syringe makes the fractions of a milligram needed near the end.
- Symptoms that arrive within days of a cut and ease when the dose is held are withdrawal, while returning depression builds over weeks and does not track the calendar of cuts.
- Holding the current dose, or stepping back to the last dose that felt steady, is a common response to a rough patch, the pace can change in either direction, and the pace of the taper belongs to the patient.
- If symptoms become severe or frightening, call 911, and if thoughts of harming yourself appear at any point, call or text 988.
Why would anyone want to taper off of mirtazapine?
People want to taper off of mirtazapine for practical reasons: the depression has been in remission for a year or two, the morning grogginess never lifted, or the increased appetite and weight gain its label lists have shown up. Some have decided they no longer want to take it, and how they stop matters, because an abrupt stop can bring withdrawal.
Mirtazapine, sold under the brand name Remeron, is an antidepressant with a tetracyclic chemical structure. In the United States, its label lists one approved use, the treatment of major depressive disorder in adults.
Yet, ask a room full of patients why they were started on it, and many will not say depression. They will say sleep. Mirtazapine is a potent blocker of histamine receptors, and its label says that this action may explain how prominently drowsy the drug makes people.
So, the reasons for wanting off of it are practical. The depression has been in remission for a year or two, the morning grogginess never lifted, or the scale has moved in a direction nobody discussed at the first appointment, and increased appetite and weight gain are right there on the label. Or, you have simply decided that you no longer want to take it, and that reason is enough.
Dr. Leeds, an osteopathic physician and deprescribing specialist in Fort Lauderdale, helps patients taper off of psychiatric medications such as mirtazapine, and the question patients bring is a fair one. How do you come off of this drug without paying for the exit?
What happens if you stop mirtazapine cold turkey?
The label answers this one directly. It reports adverse reactions upon discontinuation, particularly when abrupt, and it recommends a gradual reduction in the dosage rather than an abrupt cessation. Its list includes dizziness, abnormal dreams, sensory disturbances such as electric shock sensations, agitation, anxiety, fatigue, confusion, headache, tremor, nausea, vomiting, and sweating, and it adds that other symptoms of clinical significance may occur.
Mirtazapine has an elimination half-life of roughly 20 to 40 hours, longer in women than in men. The drug does not vanish overnight, but it fades within days, and patients often describe the trouble arriving on the second or third day after a sudden stop. If symptoms become severe or frightening, call 911 or go to the nearest emergency room, and if thoughts of harming yourself appear at any point, call or text 988, the Suicide and Crisis Lifeline.
Unfortunately, the taper plan a patient receives is often two words at the end of a fifteen-minute visit. Just stop. Or, take it every other day, which is not a taper at all but a series of small cold turkeys. The label says otherwise, and so does the nervous system of anyone who has tried it.
Is mirtazapine addictive? Dependence is not addiction.
Mirtazapine is not an addictive drug. Nobody takes it to get high, nobody takes more of it to chase a feeling, and it is not a controlled substance. What mirtazapine does cause, with steady daily use, is physical dependence.
Physical dependence means that your brain has adjusted to the presence of the drug and now expects it. Take the drug away faster than the brain can readjust, and the brain complains. That is a medical condition created by a prescription, and it is treated by tapering, not by a meeting or a lecture about willpower.
Dependence is not addiction. In fact, the person who feels terrible three days after stopping mirtazapine is usually the person who took it exactly as prescribed, every night, for years. The prescription worked as designed. The exit plan was never written.
Why does the last part of the taper feel harder than the first?
Imagine making a pot of soup. The first spoonful of salt changes everything, the second helps a little, and by the fourth you cannot tell the difference. Now, run it in reverse. Taking away the fourth spoonful changes nothing, taking away the first changes the whole pot, and if you want the last of the salt out without anyone noticing, you take it out in pinches.
While a brain is not a pot of soup, the receptors that mirtazapine acts on behave much the same way. At a full dose the curve has already flattened, so cutting the dose in half removes surprisingly little of the drug’s effect. Near the bottom, a small cut in milligrams removes a large share of what is left, and that is where the symptoms show up.
The Maudsley Deprescribing Guidelines build their mirtazapine tapers around this curve: each step is sized to remove about the same small share of the drug’s effect at its main receptor target, so the cuts in milligrams shrink as the dose falls. By the end, the dose before stopping is far smaller than any tablet a pharmacy sells. This is the principle behind hyperbolic tapering, and it explains why a patient who breezed through the first few cuts hits a wall near the end. Take the salt out in pinches.
What does a careful mirtazapine taper actually look like?
It looks like a series of smaller and smaller reductions, each followed by a pause. The pause is where the taper is won or lost. After a cut, the brain needs time to catch up, and the pause gives it that time before the next cut is considered.
Symptoms after a reduction are information, not failure. If a cut brings insomnia, nausea, or dizziness that does not settle, the answer is to hold at the current dose until it does, and sometimes to step back to the previous dose and hold there. Fortunately, the nervous system usually settles, and the taper continues from stable footing. If you have already stopped and feel awful, it is not a bad idea to ask your prescriber about returning to the last dose that felt steady and tapering from there.
While the shape is the same for everyone, the pace is not, and the pace belongs to the patient. If the taper is going too fast, the doctor must help by advising a slower taper, and if it is going more easily than expected, patient and doctor may agree to go a bit faster, as tolerated. No schedule written in advance survives contact with a real nervous system, which is why this article offers the shape of a taper and not a milligram plan. The plan is written with your prescriber, one reduction at a time.
How do you make doses that small?
Tablets get you part of the way. The 15 mg and 30 mg mirtazapine tablets are scored for splitting, the 45 mg tablet is not, and generic tablets also come in a smaller 7.5 mg strength, so the first stretch of most tapers uses ordinary pharmacy tablets and a pill cutter. Sooner or later, though, the next cut is smaller than any piece of tablet you can reliably make.
This is where a compounded liquid earns its place. A compounding pharmacy can prepare mirtazapine as a liquid of known concentration, which allows reductions of fractions of a milligram, measured with an oral syringe. Which pharmacy is a question for the visit with your doctor, not for the internet.
One caution belongs here. Switching between manufacturers, or between tablets and liquid, can change how much drug the body absorbs, and a sensitized nervous system notices small differences. Keep the same source when you can, and tell your doctor right away if the pharmacy changes it for you.
Is it withdrawal, or is the depression coming back?
This is the fear underneath most mirtazapine tapers, and it deserves a straight answer. Withdrawal and returning depression can look alike, and even an experienced doctor cannot always tell them apart in a single visit. Timing is the best clue.
Withdrawal tends to arrive within days of a reduction and tends to ease when the dose is held or restored. Depression that is truly returning builds over weeks, does not track the calendar of your cuts, and looks like the illness you remember rather than a new collection of physical sensations. Dizziness, nausea, electric shocks in the head, and vivid dreams are not depression, and this guide to surviving antidepressant withdrawal covers what those symptoms feel like and how patients get through them.
You may be wary of any doctor’s reassurance here, and that wariness is understandable. The drug was prescribed with the promise that it was easy to take, and nobody mentioned that it might be hard to leave. The answer is not to argue about which one it is in the middle of a bad week. Hold the dose, let the week pass, and decide together with clearer eyes.
How long does tapering off of mirtazapine take?
Longer than a fifteen-minute visit would suggest. For a patient who has taken mirtazapine for years, a taper measured in months is reasonable, and a taper measured in weeks is usually a taper measured in symptoms. Some patients need considerably longer, and the calendar has no vote.
Sleep is the part patients worry about most, and with reason. Mirtazapine was often the thing that got them to sleep in the first place, and its sedating effect fades as the dose comes down. Patients often describe a few rough nights after each cut that settle during the hold, and the sleep that returns without the drug tends to be sleep they trust.
There is a larger point here about informed consent. The exit plan should have been part of the conversation on the day the prescription was written, along with the risk of dependence, the alternatives, including no medication at all, and your right to say no. It probably was not. It does not have to stay that way.
How Dr. Leeds approaches a mirtazapine taper.
Dr. Leeds runs a concierge telemedicine practice, not an insurance practice, and it exists for tapers like this one. Patients meet with him weekly, by video at first and then by video or audio, often for up to an hour, and reach him by text between visits when a question cannot wait. Every reduction is decided in conversation, with the patient’s reported symptoms as the guide, and the pace can change in either direction, a hold or a smaller step when symptoms call for it, a steady pace when that serves the patient better.
Dr. Leeds generally does not prescribe selective serotonin reuptake inhibitors (SSRIs) or other antidepressants for depression. He may prescribe the medication being tapered for the taper itself, and as a rule he avoids prescribing medications that may add another physical dependency. He helps patients come off of them, at a pace the patient sets, working with compounding pharmacies when tablets can no longer be cut small enough. Care is available to patients throughout Florida by telemedicine, with in-office visits in Fort Lauderdale. If you are ready to plan a slow, patient-directed taper off of mirtazapine, contact the office today.
Frequently asked questions
What happens if you stop mirtazapine cold turkey?
The label warns of adverse reactions when the drug is stopped, particularly when it is stopped abruptly, and it recommends a gradual reduction instead. Dizziness, abnormal dreams, electric shock sensations, agitation, anxiety, fatigue, confusion, headache, tremor, nausea, vomiting, and sweating are on its list, and patients often describe the trouble arriving on the second or third day. Taking the tablet every other day is not a taper either, only a series of small cold turkeys.
Is mirtazapine addictive?
No. Nobody takes mirtazapine to get high or takes more of it to chase a feeling, and it is not a controlled substance. Yet, with steady daily use, it does cause physical dependence, which is a medical condition created by a prescription and treated by tapering.
How long does tapering off of mirtazapine take?
Longer than a fifteen-minute visit would suggest. For someone who has taken it for years, a taper measured in months is reasonable, and some patients need considerably longer. A taper squeezed into a few weeks usually brings the symptoms a slow taper is meant to avoid. The pace is set by how the nervous system responds to each cut, not by a date picked in advance.
Can mirtazapine be tapered with tablets alone?
Only for the first stretch. The 15 mg and 30 mg tablets are scored, the 45 mg tablet is not, and a 7.5 mg generic exists, so ordinary tablets and a pill cutter cover the early reductions. Sooner or later the next cut is smaller than any piece of tablet that can reliably be made, and a compounding pharmacy can prepare a liquid of known concentration for reductions of fractions of a milligram, measured with an oral syringe.
Will sleep come back after stopping mirtazapine?
Sleep is the part most patients worry about, because mirtazapine was often what got them to sleep in the first place, and its sedating effect fades as the dose comes down. Fortunately, patients often describe a few rough nights after each cut that settle during the hold, and the sleep that returns without the drug tends to be sleep they can trust.
Is it withdrawal, or is the depression coming back?
The timing tells you the most. Withdrawal tends to arrive within days of a reduction and tends to ease when the dose is held or restored. Depression that is truly returning builds over weeks, does not follow the timing of your cuts, and looks like the illness you remember rather than a new set of physical sensations. Dizziness, nausea, electric shocks in the head, and vivid dreams are not depression.
This article is educational. It is not medical advice, and reading it does not create a doctor-patient relationship. Decisions about starting, continuing, or tapering any medication should be made with your own physician.
