Milligram for milligram, dextroamphetamine is the stronger of the two. Amphetamine comes in two forms, and Adderall contains both of them in a ratio of 3 to 1. Dextroamphetamine contains only the stronger form.
That difference matters less than most people expect. Both are Schedule II drugs — the federal classification for medicines with a real medical use and a high potential for abuse. Both are prescribed within the same approved dose range, and both carry the same risks.
What Is the Difference Between Dextroamphetamine and Adderall?
Amphetamine comes in two forms that are mirror images of each other: dextroamphetamine and levoamphetamine. Adderall contains both — its tablets hold three parts dextroamphetamine to one part levoamphetamine.
Dextroamphetamine, sold under brand names such as Dexedrine, is the first form on its own. There is no levoamphetamine in it. Drugmakers build around the dextro form on purpose — it is the more powerful of the two and the more clinically effective.
Why You Cannot Compare Milligrams Directly
The number on an Adderall tablet is not the amount of amphetamine in it. It is the combined weight of four different salts, and only part of that weight is the drug itself. A 10 mg tablet works out to 6.3 mg of actual amphetamine.
The prescribed amounts end up looking almost identical. For narcolepsy — a sleep disorder causing sudden daytime sleepiness — both are prescribed at 5 mg to 60 mg a day. For Attention-Deficit/Hyperactivity Disorder (ADHD), both labels say going above 40 mg a day is rarely necessary. Doctors already factor the potency difference into the dose they choose.
Dextroamphetamine vs Adderall: A Side-by-Side Comparison
| Dextroamphetamine | Adderall | |
|---|---|---|
| Composition | Dextro isomer only | Dextro + levo isomers, 3:1 |
| Relative potency | Stronger, milligram for milligram | Diluted by the weaker levo form |
| 10 mg tablet, actual amphetamine | Not sold at this dose split | 6.3 mg |
| Approved uses | ADHD, narcolepsy | ADHD, narcolepsy |
| ADHD dose rarely exceeds | 40 mg/day | 40 mg/day |
| Controlled substance class | Schedule II | Schedule II |
Why Duration Matters as Much as Potency
How long a dose keeps working shapes the whole day, and the two differ here as well. Doctors measure this with a half-life: the time it takes your body to clear out half of a dose.
With dextroamphetamine, one substance is leaving your body on one timeline. With Adderall, two substances are leaving on two different timelines, so the two can feel different even at doses a doctor considers equivalent.
The Risks Are the Same for Both
Whatever the ratio, both drugs are amphetamine, and both are Schedule II controlled substances. Adderall carries a boxed warning for abuse, misuse and addiction — its label states that misuse can result in overdose and death, with the risk rising at higher doses or when the drug is snorted or injected. The dextroamphetamine label reports tolerance, extreme psychological dependence, and cases of people escalating well past the prescribed dose.
Stopping abruptly brings its own difficulty. Withdrawal after prolonged stimulant use can include:
- Dysphoric mood
- Depression
- Fatigue
- Vivid and unpleasant dreams
- Disrupted sleep
- Increased appetite
- Psychomotor agitation or slowing
When Prescription Use Turns Into Something Else
Prescription stimulant misuse is not a fringe problem.
Misuse rarely announces itself. It often begins with an extra dose before a deadline, a pill borrowed from a friend, or a prescription that runs out a little earlier each month. The signs worth paying attention to are patterns, not just any single incident:
- Needing more for the same effect
- Taking the medication in ways it was not prescribed
- Continuing despite sleep, mood, or heart symptoms that worry you
How Stimulant Use Disorder Is Treated
No medication has been approved by the FDA to treat stimulant use disorder. That makes therapy the core of treatment.
Cognitive Behavioral Therapy (CBT) is among the approaches with the strongest evidence behind it, and it is one of the methods used at Sprout Recovery. In individual therapy, CBT and Dialectical Behavior Therapy (DBT) help you spot the thought patterns driving how you feel and act, then build something steadier in their place.
Psychodynamic therapy is for people who want to understand not just what they are feeling but where it started.
Neurofeedback runs alongside your therapy, using real-time brainwave feedback to support regulation and stress. Treating any other condition at the same time matters just as much, because there is usually a reason the stimulant becomes so hard to give up.
- Dextroamphetamine contains only the dextro isomer of amphetamine; Adderall contains dextro and levo isomers in a 3-to-1 ratio.
- Milligram for milligram, dextroamphetamine is the more potent of the two because the dextro isomer is the more active form.
- Adderall milligrams describe the weight of four salts rather than the amount of amphetamine base, so tablet numbers do not compare directly across products.
- Both are approved for ADHD and narcolepsy, both are Schedule II controlled substances, and both carry the same risks of tolerance, dependence and withdrawal.
- Stimulant addiction is treated with therapy rather than medication, and treating any other condition alongside it matters just as much.
Stimulant Use Disorder Treatment for Adults in Fort Myers, FL
Worrying about your relationship with a prescription is a reason to ask a question, not a verdict on you.
Sprout Recovery is an outpatient center in Fort Myers serving adults 18 and older across Lee County and Southwest Florida. Our Partial Hospitalization Program (PHP) and Intensive Outpatient Program (IOP) treat mental health conditions, substance use disorders, and both together.
Individual therapy, group therapy, and medication management form the core of care, alongside neurofeedback. Sober living is available for those in recovery from a substance use disorder.
Call our admissions team. We will verify your benefits and talk through what fits where you are right now.
- U.S. Food and Drug Administration — ADDERALL Prescribing Information (2023)
- Martin, D. & Le, J. K. — Amphetamine, StatPearls (2023)
- U.S. Food and Drug Administration — DEXEDRINE Prescribing Information (2022)
- SAMHSA — 2024 National Survey on Drug Use and Health
- FDA — Advancing Novel Therapies for Stimulant Use Disorders (2023)
- ASAM / AAAP — Clinical Practice Guideline on the Management of Stimulant Use Disorder (2024)