What are the differences in dosage between ritalin (methylphenidate) and adderall, to achieve the same effects?

Rough estimate below. D-amphetamine (dexedrine) is about twice as potent as methylphenidate (ritalin), so 10 mg of the former is roughly the same as 20 mg of the latter. Adderall (dextroamphetamine and racemic amphetamine) is a mixture of 1/2 d-amphetamine plus 1/2 d- & l-amphetamine (the latter being inactive with respect to adhd. So, conversion from Ritalin to Adderall (dextroamphetamine and racemic amphetamine) is about 20 mg down to 15 mg. But, individual response varies, so that's just a start.

Related Questions

What are the differences in dosage between ritalin (methylphenidate) and adderall?

Not exact. Ritalin is the brand name for methylphenidate (mph), and Adderall (dextroamphetamine and racemic amphetamine) is the brand name for amphetamine (amp). Mph is about half as potent as d-amp, so 20 mg of methylphenidate would be roughly 10 mg of d-amp. But, Adderall (dextroamphetamine and racemic amphetamine) is a mix of d- and l-amp, and only d-amp is active; so, the ritalin/adderall ratio is more like 20/15. As dr. Hoffman said: little, especially adding in individual differences. Read more...

I learned that Adderall class and Ritalin (methylphenidate) class are absorbed differently. Can you pls explain what those differences are and their general effect?

Doctor. You are right. Review the medication with your doctor. Some act for short periods of time and some longer. Your doctor will be able to determine what works best for your situation. All the best. Read more...

Could you tell me the main difference between concerta and ritalin (methylphenidate) vs adderall?

They are stimulants. They are different versions of a stimulant. The main difference from my perspective is how an individual responds to them. Read more...
Stimulants. All are stimulants for ADHD. Adderall (dextroamphetamine and racemic amphetamine) is belongs to the Amphetamine group. The other 2 belong to the Methyl Phenidate group. Read more...

Can dopamine levels in the brain be measured using imaging? I have symptoms of low dopamine. Was on high dose ritalin (methylphenidate) then adderall for many years.

Not available . Currently there is no clinically available test for measuring brain dopamine. Dopamine depletion clinically is seen as Parkinsons Disease which is due to a loss of dopamine from the substantia nigra. Rigidity, tremor, bradykinesia and masklike face are symptoms. Read more...