Navigation Links
Vyvanse Capsules CII administration through 2 routes demonstrated similar pharmacokinetic profile

PHILADELPHIA October 22, 2009 Shire plc (LSE: SHP, NASDAQ: SHPGY), the global specialty biopharmaceutical company, announced new data about the pharmacokinetics of its Attention-Deficit/Hyperactivity Disorder (ADHD) medication, Vyvanse (lisdexamfetamine dimesylate) Capsules CII, which showed that Vyvanse provided similar concentrations of its active medication in the blood when administered either intranasally or when administered orally. Specifically, the overall rate and extent of exposure to d-amphetamine, the active medication in Vyvanse, was similar in healthy adults whether they received the drug as a solution through the nose or orally as a capsule. These findings, which were recently presented at a major psychiatric meeting, reflect the ongoing efforts of Shire to further understand the abuse potential of Vyvanse.

"This research is important because the route of administration of a drug may affect the rate and extent of absorption, which in turn may affect the risk of abuse. However, in this study, absorption of Vyvanse through the nose did not result in a rapid rise in d-amphetamine levels," said Patrick Martin, MD, Vice President, Global Clinical Pharmacology and Pharmacokinetics at Shire. "In this study, exposure to d-amphetamine did not differ when Vyvanse was administered orally or intranasally. While the results of this study are important, it is not accurate to say or imply that Vyvanse cannot be abused."

Vyvanse is indicated for oral administration only, and should not be administered intranasally.

About Vyvanse Vyvanse, which is approved to treat ADHD in children aged 6 to 12 years and in adults, is a therapeutically inactive prodrug, in which d-amphetamine is covalently bonded to l-lysine, and after oral ingestion it is converted to pharmacologically active d-amphetamine. The conversion of Vyvanse to d-amphetamine is not affected by gastrointestinal pH and is unlikely to be affected by alterations in GI transit times. ADHD stimulant products are classified as schedule II controlled substances because a high potential for abuse exists.

About the Study This open-label, two-period, crossover study compared the pharmacokinetics of d-amphetamine, the active medication derived from Vyvanse, in 18 healthy men after single administration through nasal and oral routes. The primary objectives of the study were to determine whether Vyvanse is absorbed after intranasal delivery and to assess the extent of absorption and conversion to d-amphetamine, specifically whether administration through the nose would alter the rate and extent of absorption. A secondary study objective was to evaluate the safety of Vyvanse administered as a single oral dose and a single intranasal dose.

In the study, investigators randomly assigned participants to receive a single nasal or oral dose of Vyvanse 50 mg, then, at least seven days later, the subjects received the opposite regimen. Results showed that the rate and extent of d-amphetamine exposure were similar in the healthy participants who received a single 50-mg dose of Vyvanse either through the nose via a solution formulation or orally in capsule form. Specifically, the median time to maximum plasma concentration of d-amphetamine was five hours after oral administration of Vyvanse and four hours after intranasal administration of Vyvanse. Maximum plasma concentration for intranasal administration and oral administration of Vyvanse were similar (35.9 ng/mL versus 37.6 ng/mL, respectively).

In this study, treatment-emergent adverse events were mild to moderate in severity and consistent with known effects of amphetamine. The most common adverse events with an incidence greater than 5 percent among subjects administered Vyvanse by intranasal administration were: tachycardia (two of 18 subjects), dry mouth (two of 18 subjects), and feeling jittery (two of 18 subjects), and for oral administration: anorexia (four of 18 subjects). Adverse events were more common after intranasal administration, reported by 38.9 percent of participants (seven of 18), compared with 27.8 percent of participants (five of 18) after oral administration.

Vyvanse, which was introduced in the United States in July 2007 for the treatment of ADHD in children aged 6 to 12 years and approved in April 2008 to treat ADHD in adults, is currently available in six dosage strengths of 20 mg, 30 mg, 40 mg, 50 mg, 60 mg, and 70 mg.


Contact: Matthew Cabrey, Shire
Porter Novelli

Related medicine news :

1. VYVANSE CII provided significant efficacy at 14 hours in adults with ADHD
2. GlaxoSmithKline and Shire Enter Agreement to Co-Promote Vyvanse(R) (lisdexamfetamine dimesylate) CII for Adult Attention Deficit Hyperactivity Disorder
3. VYVANSE provided behavior, inattention and math test score improvements in children with ADHD
4. Phase III pivotal results presented of VYVANSE to treat ADHD in adults
5. FDA approves VYVANSE, first and only once-daily prodrug stimulant to treat ADHD in adults
6. FDA approves additional dosage strengths of Vyvanse
7. Further Upgrade to 2007 Financial Guidance Based on Strong Revenue Growth; VYVANSE Demand on Track
8. VYVANSE trial in adult ADHD demonstrated significant efficacy within 1 week of daily treatment
9. Breckenridge Pharmaceutical Enters Agreement with Orit Laboratories (West Caldwell, NJ) to Market Ergocalciferol (Vitamin D) Capsules
10. Solvay Pharmaceuticals, Inc. Announces Commercial Availability of CREON(R) (Pancrelipase) Delayed-Release Capsules
11. Patients Suffering from Diabetes Now Have the Option to Suffer No More with Diabetic Free All Natural Medical Herbal Extracts Capsules
Post Your Comments:
(Date:6/25/2016)... ... June 25, 2016 , ... On Friday, June 10, Van Mitchell, ... at Work award to iHire in recognition of their exemplary accomplishments in worksite health ... annual Maryland Workplace Health & Wellness Symposium at the BWI Marriott in Linthicum Heights. ...
(Date:6/24/2016)... ... 2016 , ... Those who have experienced traumatic events may suffer from a ... such as drug or alcohol abuse, as a coping mechanism. To avoid this pain ... following a traumatic event. , Trauma sufferers tend to feel a range of emotions, ...
(Date:6/24/2016)... ... June 24, 2016 , ... The Pulmonary Hypertension Association ... it will receive two significant new grants to support its work to advance ... 25th anniversary by recognizing patients, medical professionals and scientists for their work in ...
(Date:6/24/2016)... ... June 24, 2016 , ... Comfort Keepers® of San Diego, CA is excited ... To Recovery® program to drive cancer patients to and from their cancer treatments. ... highest quality of life and ongoing independence. Getting to and from medical treatments ...
(Date:6/24/2016)... Georgia (PRWEB) , ... June 24, 2016 , ... ... awards today at the Clinical Decision Making in Emergency Medicine conference in Ponte ... have authored journal articles published in Emergency Medicine Practice and Pediatric ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , June 23, 2016 Any dentist who has ... of the current process. Many of them do not even ... technical difficulties and high laboratory costs involved. And those who ... it at such a high cost that the majority of ... Dr. Parsa Zadeh , founder of Dental Evolutions ...
(Date:6/23/2016)... Research and Markets has announced the ... 2016 - Forecast to 2022" report to their offering. ... up to date financial data derived from varied research sources ... with potential impact on the market during the next five ... comprises of sub markets, regional and country level analysis. The ...
(Date:6/23/2016)... , June 23, 2016 , ... Thursday, July 7, 2016 , , , , LOCATION: , ... , , , , EXPERT PANELISTS:  , , , Frost ... Industry Analyst, Christi Bird; Senior Industry Analyst, Divyaa Ravishankar and Unmesh ... The global pharmaceutical industry is witnessing an exceptional era. Several ...
Breaking Medicine Technology: