Generic form of vyvanse?

The generic name is lisdexamfetamine dimesylate. Vyvanse (lisdexamfetamine) is a prodrug of dextroamphetamine, and the generic version is available as lisdexamfetamine dimesylate capsules in similar strengths (e.g., 10, 20, 30, 40, 50, 60, 70 mg) from multiple manufacturers. In most places, the active ingredient and dosing are the same; inactive ingredients may differ by manufacturer.

If you’re asking about substituting a brand-name prescription for a generic, check with your pharmacist or prescriber. Vyvanse is a controlled substance (Schedule II in the US), so any substitution should be done under supervision.