Vyvanse is the brand name for lisdexamfetamine dimesylate. It comes in both capsules and chewable tablets. It also has the stimulant amphetamine, but adds a compound called lysine. Your body has to absorb the lysine to get to the stimulant, so your dose may last up to 14 hours.

How long does it take for 30mg of Vyvanse to wear off?

Based on a 12-hour half-life for dextroamphetamine, one would expect the drug to be eliminated from the body within 2–3 days.

Is 30mg of Vyvanse a lot?

While Vyvanse offers dosing options from 10 mg to 70 mg, the recommended starting dose is 30 mg. Your doctor may periodically increase or decrease your dosage to help control ADHD symptoms and manage side effects. The maximum daily dose of Vyvanse is 70 mg.