BIPHETAMINE 12.5 vs MYSOLINE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated October 6, 2026·How we rate

Possible drug interaction. BIPHETAMINE 12.5 and MYSOLINE are different prescription medicines. Combining or switching between them can cause interactions — talk to a pharmacist or prescriber before making changes. This page is not medical advice.

Attribute	BIPHETAMINE 12.5	MYSOLINE
Rating	70/100	74/100
Pharmacy pays	—	~$2.89 /30
Type	RX	RX
Active ingredient	AMPHETAMINE RESIN COMPLEX AND DEXTROAMPHETAMINE RESIN COMPLEX	PRIMIDONE
Manufacturer	Ucb Inc	Valeant Pharm Intl
Dosage forms	Capsule, extended release	Tablet
Drug class	—	Anti-Epileptic Agent
Boxed warning	None	None
Half-life	about 10 to 11 hours for d-amphetamine (range 9.8 to 11 hours) and about 12 to 14 hours for l-amphetamine (range 11.5 to 13.8 hours) in healthy adults	—
Treats	—	Partial Epilepsies, Tonic-Clonic Epilepsy, Tremor

biphetamine 12.5 mysoline

Rating

70/100

74/100

Pharmacy pays

—

~$2.89 /30

Type

Active ingredient

AMPHETAMINE RESIN COMPLEX AND DEXTROAMPHETAMINE RESIN COMPLEX

PRIMIDONE

Manufacturer

Ucb Inc

Valeant Pharm Intl

Dosage forms

Capsule, extended release

Tablet

Drug class

—

Anti-Epileptic Agent

Boxed warning

None

Half-life

about 10 to 11 hours for d-amphetamine (range 9.8 to 11 hours) and about 12 to 14 hours for l-amphetamine (range 11.5 to 13.8 hours) in healthy adults

—

Treats

—

Partial Epilepsies, Tonic-Clonic Epilepsy, Tremor

Frequently asked questions

Which is better-rated, Biphetamine 12.5 or Mysoline?

By our independent rating, Mysoline scores higher — 3.7 vs 3.5 out of 5 for Biphetamine 12.5. Ratings are based on FDA regulatory (recall-safety) data.

What is the difference between Biphetamine 12.5 and Mysoline?

Biphetamine 12.5 contains Amphetamine Resin Complex and Dextroamphetamine Resin Complex, while Mysoline contains Primidone — they have different active ingredients.

Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.