Aripiprazole (Abilify)

What is aripiprazole?

Aripiprazole is known as Abilify in the United States, Europe, and Japan alike; it's the same medicine everywhere (on Japanese packaging you'll see it written as エビリファイ). It's a dopamine-balancing medication in the family called antipsychotics, a name that describes the drug group, not what taking it says about you. In Japan it's very commonly prescribed at low doses as an add-on to an antidepressant.

How is it different from other antipsychotics?

• A balancer, not a blocker: it steadies dopamine signalling in both directions (calming overactivity, supporting underactivity), which is unusual in its family
• One of the less sedating options: many people work and study normally on it
• Comparatively friendly to weight and blood sugar among antipsychotics, though monitoring still matters
• Versatile: the same medicine works from full antipsychotic doses down to tiny antidepressant-boosting doses

What is it used for in Japan?

• Schizophrenia
• Manic symptoms of bipolar disorder
• Depression, as an add-on when an antidepressant alone hasn't been enough
• Irritability in children with autism spectrum disorder

How does it help?

It steadies dopamine signalling: calming it where it's overactive and supporting it where it's underactive. Added to an antidepressant, this often lifts a response that has stalled. Some effect can appear within the first weeks; give it time and keep taking it as prescribed.

What should I tell my doctor before starting?

A few situations rule it out entirely; your doctor will choose something else if any of these apply:

• A past allergic reaction to aripiprazole
• Being under the strong influence of sedatives, sleeping-drug overdose, or anesthesia (a coma-like or deeply sedated state)
• Treatment with adrenaline (epinephrine), except emergency allergy injections and some dental anesthesia

And tell your doctor first if any of these apply; these usually just need adjustments or a closer eye:

• Diabetes, high blood sugar, or a family history of diabetes
• Certain antifungals or antibiotics (like itraconazole or clarithromycin), the antidepressant paroxetine, or the epilepsy medicine carbamazepine; these change aripiprazole's level, so the dose is adjusted
• Blood pressure medicines
• A history of seizures
• Regular alcohol use; it amplifies drowsiness
• Pregnant, planning to be, or breastfeeding (see the section below)

Your doctor may check your weight and blood sugar now and then. If you notice unusual thirst, drinking a lot, or passing urine much more than usual, tell us promptly.

How do I take it, and what if I miss a dose?

Aripiprazole is usually taken once a day, with or without food; your doctor sets the dose by what it's treating, from very low (antidepressant add-on) to higher (schizophrenia, mania).

• If you miss a dose: take it when you remember, unless the next dose is close; in that case just skip. Never take a double dose to catch up
• The first weeks are when restlessness (see below) is most likely to appear; report it early rather than enduring it

What side effects should I expect?

Most are mild and settle within the first weeks as your body adjusts, and many can be eased with a counter-medicine (for nausea, for example). Not everyone gets them; the rough figures below just give a sense of how common each one is, based on the depression add-on studies at the low doses used there.

• Feeling restless or fidgety, like it's hard to sit still (akathisia): around 15% at the usual low dose, more if the dose is raised. This is the one to tell us about early: lowering the dose, adjusting the timing, or adding a medicine that counters the restlessness usually settles it
• Tremor (around 5%)
• Drowsiness (under 10%), or trouble sleeping in some people
• Constipation
• Nausea

If anything is bothering you, tell your doctor; there's often a way to adjust. And if you ever feel worse instead of better, tell us straight away; it's easily managed, and that's what we're here for.

Finally, two things that are rare enough that most people never experience them, but knowing them makes them easy to handle:

• A combination of high fever, muscle stiffness, and confusion (on the order of 1 in 1,000 people or fewer): if this happens, get medical care promptly; recognised early, it's manageable
• New strong urges that are hard to resist (gambling, spending, eating): uncommon, and it reverses when the medicine is adjusted; just mention it if you notice it

Will I become dependent? How do I stop safely?

No; aripiprazole isn't addictive and doesn't cause cravings. Stopping is about timing rather than withdrawal: coming off too early can let symptoms return, so the decision and the pace are planned with your doctor. Don't stop it on your own, even when you feel well; feeling well is usually the medicine doing its job. Many people use it for a defined stretch alongside their antidepressant and come off it smoothly.

Can I drive while taking it?

The Japanese label advises against driving while taking it. Aripiprazole can cause drowsiness, and the label here instructs that patients on it shouldn't drive or operate dangerous machinery. In practice this is a conversation with your doctor: be especially careful when starting or raising the dose, and don't drive until you're confident it doesn't dull you.

What about pregnancy and breastfeeding?

Often, treatment can continue when it's needed; the decision is individual. Untreated illness carries real risks in pregnancy too, so this is a planning conversation, not an automatic stop; never stop on your own on learning you're pregnant. Breastfeeding is decided case by case. Our guides to medication in pregnancy and medication while breastfeeding cover the details.