Concerta vs. Adderall: How They Differ and Which Fits You

Concerta is methylphenidate, the same molecule as Ritalin, in a once-a-day tablet built to release slowly. Adderall is a mix of amphetamine salts, sold as a short-acting tablet and, as Adderall XR, a long-acting capsule. People compare them as if they were two brands of one drug. They are different molecules with different release designs.

That has practical consequences: how a dose is spread across the day, whether the medicine can be taken by someone who cannot swallow a tablet, what a switch from one to the other involves, and which side effect ends up making the decision. The FDA prescribing information for each product covers most of it, and the table below is drawn from those labels.

What Concerta is, and what Adderall is

Concerta is a brand of methylphenidate in an extended-release tablet. The tablet is nondeformable: it does not appreciably change shape in the digestive tract, and the label says to swallow it whole and never split, crush, or chew it, because doing so compromises the extended release. The label also tells patients not to worry if they notice a tablet-shaped object in their stool. MedlinePlus explains that this is the empty tablet shell and does not mean the dose was missed.

About 22% of the methylphenidate in a Concerta tablet is available for immediate release; the remaining 78% comes out over an extended period. Methylphenidate blocks the reuptake of norepinephrine and dopamine, although the label states that its mode of therapeutic action in ADHD is not known.

Adderall is a different molecule: a single-entity amphetamine product made of four salts, with dextroamphetamine and levoamphetamine in a 3:1 ratio. The immediate-release tablet is the original form. Adderall XR puts the same salts into a capsule of immediate-release and delayed-release beads that stretch the release across the day, and the capsule can be opened and sprinkled on applesauce, which Concerta's design does not allow.

For where both sit next to Vyvanse and Ritalin, see our three-way guide to Ritalin vs. Adderall vs. Vyvanse.

How do onset and duration compare?

Concerta gives an initial plasma peak at about one hour, then methylphenidate levels keep climbing gradually over the next five to nine hours before they fall. In two laboratory classroom studies in children ages 6 to 12, improvements in attention and behavior were maintained through 12 hours after dosing.

Immediate-release Adderall peaks about three hours after a dose, with additional doses at four- to six-hour intervals, usually two to three times daily per MedlinePlus. Adderall XR moves the peak out to about seven hours and is taken once on awakening, with afternoon doses avoided because of insomnia.

That leaves Concerta and Adderall XR as once-a-morning products and Adderall IR as the one you redose, which also makes IR the form that gives you the most control over when coverage stops. All of these figures are population averages. The hour a stimulant wears off for you is learned by watching the late afternoon, not by reading a table.

Which is stronger?

Concerta's label raises the dose in 18 mg steps, and Adderall XR's raises a child's dose in 5 or 10 mg steps. They are different molecules, so a 36 mg Concerta tablet and a 20 mg Adderall XR capsule are not a 36-versus-20 contest, and the milligram labels say nothing about which one will work for you.

Each class has placebo-controlled trials behind it, and neither label claims to beat the other. Pooled research gives a partial answer. A 2018 network meta-analysis of 133 double-blind randomized trials found that, on clinicians' ratings over about 12 weeks, amphetamines reduced ADHD symptoms somewhat more than methylphenidate in both children and adults. Weighing that against side effects, the authors favored methylphenidate as the first choice for children and adolescents and amphetamines for adults, and they rated the certainty of many comparisons as low. Those are averages across thousands of people. They do not tell you which class will suit you.

Why some people do better on methylphenidate and others on amphetamine

NIMH puts it plainly: stimulants are the most common type of ADHD medication, and "sometimes, a person must try several different medications or dosages before finding the one that works for them." Some people take methylphenidate and feel focused without feeling altered. Others find it flat or edgy and feel right on an amphetamine.

Prescribers cannot reliably predict which group a new patient falls into. The American Academy of Pediatrics' 2019 ADHD guideline calls the response to methylphenidate versus amphetamine idiosyncratic, with about 40% of patients responding to both and about 40% responding to only one, and says ADHD subtype does not predict it. So the usual approach is to start one class, titrate, and judge benefit and side effects over weeks. Side effects can settle it, too. A person who gets equal focus from both but loses their appetite badly on one has their answer.

A few details in the labels can narrow the choice before any trial starts. Someone who wants to decide each day when coverage ends has that option with immediate-release Adderall and not with a once-daily tablet. Someone who cannot swallow a tablet whole cannot take Concerta, while an Adderall XR capsule can be opened onto applesauce. And a history of severe narrowing in the gut points away from Concerta, for reasons covered below. None of this tells you which drug will work. It tells you which ones are practical to try.

Side effects compared

The two labels overlap heavily, as you would expect from two CNS stimulants. The differences are mostly in emphasis, plus one warning that is Concerta's alone.

Appetite and weight

Decreased appetite was the most common adverse reaction in Concerta's adult trials, reported by 25% of patients on Concerta versus 7% on placebo. In the Adderall XR trials, loss of appetite was the most common adverse reaction in children 6 to 12 (22% versus 2% on placebo) and teens (36% versus 2%); in adults it was 33%, just behind dry mouth at 35%. Both labels caution that rates from one drug's trials cannot be compared directly with another's. Both labels warn about long-term suppression of growth in children and call for monitoring height and weight.

Sleep, blood pressure, and heart rate

Insomnia is on both labels' most-common lists for adults. Both products are taken in the morning, and the Adderall XR label says afternoon doses should be avoided because of the potential for insomnia. On the cardiovascular side, both labels put numbers to it: CNS stimulants may raise blood pressure by a mean of about 2 to 4 mm Hg and heart rate by about 3 to 6 beats per minute, with some patients having larger increases. Both labels call for monitoring blood pressure and pulse.

Mood and psychiatric effects

Anxiety and irritability are on Concerta's adult list; anxiety and agitation are on Adderall XR's. Both labels warn that stimulants can worsen a pre-existing psychotic disorder, can induce a manic episode in bipolar disorder, and can cause new psychotic or manic symptoms at recommended doses; in pooled short-term trials these occurred in about 0.1% of stimulant-treated patients, versus 0% on placebo.

Tics

Both labels say to assess family history and evaluate for motor or verbal tics or Tourette's syndrome before starting, to monitor for new or worsening tics, and to discontinue if clinically appropriate. Neither drug is singled out as safer here.

The warning that belongs to Concerta alone

Because the tablet does not change shape in the gut, the Concerta label says it should not ordinarily be given to patients with pre-existing severe pathologic or iatrogenic gastrointestinal narrowing, citing rare reports of obstructive symptoms in patients with known strictures who took nondeformable extended-release products. It is also only for people who can swallow the tablet whole. If you have a history of bowel narrowing or trouble swallowing, tell the prescriber before starting. Concerta's Medication Guide says a different medicine will need to be prescribed for anyone who cannot swallow the tablet whole.

Concerta vs. Vyvanse, briefly

Concerta and Vyvanse are both once-daily, long-acting stimulants, one from each class. Concerta is methylphenidate in a slow-release tablet. Vyvanse is lisdexamfetamine, a prodrug of dextroamphetamine that is inactive until red blood cells convert it after absorption. Vyvanse is approved for ADHD in adults and children 6 and older, and for moderate to severe binge eating disorder in adults, an indication Concerta does not carry.

Our guide to Vyvanse vs. Adderall covers the prodrug difference in depth, and Ritalin vs. Adderall handles the immediate-release methylphenidate comparison.

Misuse potential: same schedule, different designs

Both are Schedule II controlled substances, and both labels carry the same boxed warning: misuse can lead to a substance use disorder, can result in overdose and death, and the risk rises with higher doses or unapproved routes such as snorting or injection.

The design difference matters at the margin. Concerta's tablet is built to be swallowed whole, and the label says crushing it compromises its extended-release characteristics. The label describes two human abuse potential studies in people with a history of recreational stimulant use. In the second, immediate-release methylphenidate produced greater "drug liking" than Concerta at similar doses, which the label calls consistent with Concerta's extended-release properties. In the first, drug-liking scores for the two were statistically similar. The label says the clinical significance of the differences is unknown.

None of that makes Concerta safe to misuse. NIDA notes that high doses of prescription stimulants can cause dangerously high body temperature and irregular heartbeat, and that repeated misuse can lead to hostility, paranoia, or psychosis. We go further in our article on prescription stimulant misuse and its mental health risks.

Switching between them

There is no official milligram-to-milligram conversion between Concerta and Adderall, and you will not find one here. The Concerta label includes a table for patients switching from another methylphenidate product. It gives no conversion from an amphetamine; patients not already taking methylphenidate start at the usual starting dose.

For a patient coming from another medication, both labels take the same approach: start at the new product's recommended starting dose and adjust at weekly intervals. MedlinePlus makes the same point even within the amphetamine family: products are absorbed differently, so one cannot be swapped for another without your doctor's guidance.

What about generic Concerta?

Generic methylphenidate extended-release tablets are sold by several manufacturers. In November 2014, the FDA announced that two generic versions, made by Mallinckrodt and Kudco, might deliver drug at a slower rate during the 7- to 12-hour range than Concerta in some patients. The agency changed their therapeutic equivalence rating from AB to BX, meaning they were no longer recommended as automatically substitutable at the pharmacy, and in 2016 proposed withdrawing their approvals. The Actavis authorized generic sold at the time was not affected, and the FDA approved a new Mylan generic in October 2016.

That episode does not mean generics are worse. It means that for a product whose whole point is its release curve, the pharmacy's choice of manufacturer can change the afternoon. If a generic switch coincided with a shorter day, ask the pharmacist which manufacturer's product you were given, and tell your prescriber, before concluding the medication stopped working.

When to get help

If a stimulant is leaving you wired at midnight, without an appetite, or with a racing heart, call your prescriber rather than pushing through. Dose, timing, and class are all adjustable. If your use has drifted past the prescription (extra doses, running out early, borrowed pills), that is a treatable problem, and the earlier it is named the easier it is to untangle.

If someone has chest pain, shortness of breath, fainting, a seizure, severe agitation or paranoia, or cannot be woken after taking a stimulant, call 911. If someone took too much and has none of those signs, call Poison Help at 1-800-222-1222 right away. For a mental health crisis, call or text 988, free and confidential, any hour. For treatment referrals for substance use or mental health, the SAMHSA National Helpline at 1-800-662-4357 is free, confidential, and open 24/7, and FindTreatment.gov lets you search licensed programs near you.

The bottom line

Concerta is methylphenidate and Adderall is amphetamine, and both are Schedule II. Concerta and Adderall XR are approved for ADHD from age 6 and cover most of the day on one morning dose. Adderall IR is the short one, and its label dosing starts at age 3.

Neither wins on milligrams, and pooled trials give averages, not a prediction for you. One may suit you better, and the way to learn which is a supervised trial. If your prescriber switches you, there is no conversion chart: the labels start you at the new product's starting dose.

Frequently asked questions

Is Concerta the same as Adderall?

No. Concerta is methylphenidate in an extended-release tablet. Adderall is a mix of amphetamine salts sold as an immediate-release tablet and an extended-release capsule. Same broad class of CNS stimulants, different molecules.

Which lasts longer, Concerta or Adderall?

Concerta is taken once in the morning, and its classroom studies showed effects maintained through 12 hours after dosing. Adderall XR is also once daily, peaking at about 7 hours. Immediate-release Adderall is the shortest and is redosed at 4- to 6-hour intervals.

Is Concerta or Adderall stronger?

Not on the milligram labels, which measure two different drugs on different scales. In pooled trials, amphetamines reduced symptoms somewhat more on average, yet reviewers weighing side effects too favored methylphenidate first for children and amphetamines for adults. Averages do not predict one person's response, and NIMH notes that a person may need to try several medications or dosages before finding the one that works.

Can you switch from Concerta to Adderall?

Yes, with a prescriber. There is no official milligram-to-milligram conversion between methylphenidate and amphetamine, so a switch means starting at the new product's recommended starting dose and adjusting from there.

Why does Concerta have a warning about intestinal narrowing?

Because the tablet does not change shape as it passes through the gut. The label says it should not ordinarily be used in people with pre-existing severe gastrointestinal narrowing, and only in people who can swallow it whole. The empty shell may appear in the stool, which is normal.

Sources

• DailyMed. "Concerta (methylphenidate hydrochloride) extended-release tablets prescribing information."
• DailyMed. "Adderall (amphetamine salts) prescribing information."
• DailyMed. "Adderall XR (amphetamine salts) extended-release capsules prescribing information."
• DailyMed. "Vyvanse (lisdexamfetamine) prescribing information."
• U.S. Food and Drug Administration. "Methylphenidate Hydrochloride Extended Release Tablets (generic Concerta) made by Mallinckrodt and Kudco."
• MedlinePlus. "Methylphenidate."
• MedlinePlus. "Dextroamphetamine and Amphetamine."
• National Institute of Mental Health. "Attention-Deficit/Hyperactivity Disorder: What You Need to Know."
• Cortese S, Adamo N, Del Giovane C, et al. "Comparative efficacy and tolerability of medications for attention-deficit hyperactivity disorder in children, adolescents, and adults: a systematic review and network meta-analysis." Lancet Psychiatry. 2018;5(9):727-738.
• Wolraich ML, Hagan JF Jr, Allan C, et al. "Clinical Practice Guideline for the Diagnosis, Evaluation, and Treatment of Attention-Deficit/Hyperactivity Disorder in Children and Adolescents." Pediatrics. 2019;144(4):e20192528.
• National Institute on Drug Abuse. "What classes of prescription drugs are commonly misused?"
• Substance Abuse and Mental Health Services Administration. "National Helpline."