After the nicotine is gone, and the brain stops releasing the positive neurotransmitters, smokeless tobacco users feel tired, depressed, and down. Nicotine also causes the brain to release a chemical called dopamine. Other very addictive drugs like cocaine make the brain release dopamine, too.
The short acting form of Adderall is taken by patients twice a day in tablet form. The recommended starting dose for children 3 to 5 years of age 2.5 mg daily; children 6 years or older is 5 mg once or twice daily. Depending on the individual, an adultâs usual dose is 5 mg to 60 mg daily.
Vyvanse vs. Adderall dosage. Vyvanse. The recommended starting dose of Vyvanse for treating ADHD in adults is 30 mg and for pediatric patients ages (6-12) it is 20 to 30 mg once daily in the morning. Doses may be increased by 10-20 mg/day at weekly intervals. The maximum dose is 70 mg daily.