Showing posts with label Sleep Disorder. Show all posts
Showing posts with label Sleep Disorder. Show all posts

Thursday, February 7, 2013

Drug agency Recommends Lower Dose of Ambien for Women

Ambien was taken for sleep in American’s for almost 20 years. However, FDA- food and drug administration got complaints that taking that drug made them drowsy the next morning and sometimes led to accidents.

After test on drowsiness risk on driving, the agency said on Thursday that woman should take half the drug.
This applies to the drugs containing Zolpidem. Half dose ensures that less drug remains in the blood and people can drive in the morning.

There is an increased usage of these sleeping pills due to the fast life. As per IMS which a healthcare and technology company, it says that in 2011 there were almost 60 million prescriptions, which was 20% then 2006 and 40 million were for products that was having Zolpidem.

The recommendation was mainly based for women because the mobilization takes longer in them as compared to men. Almost 10% to 15% of women will have the drug in their blood after 8 hours and compared to only 3% men, as said by Dr. Robert Temple, Officer, Center for Drug Evaluation and Research.

There were many reports in regards to problems caused after the use of sleeping pills, and doctors have questioned why it took time for the agency to act so late. The effects are driving in sleep, eating, texting having sex and no memory of the same in the morning, these are all well known.

As said by Daniel Carlat, Associate Clinical professor, Psychiatry, Tufts University, “the agency is behind to pass the recommendation as the doctors are well aware of the conditions like this. This will be good as the patients will ask proper dose.”

Agency said that there were 700 complaints about driving accident and Zolpidem intake, for many years, there was a spike in 2007, when the label was changed and more people complained. But a connection between the report and the drug was not easy to make, as they did not remembered the time of pill intake as they were drinking.

Until the time when agency performed controlled test of Inetrmezzo to get driving simulation, approved in 2011 for walking in mid of night, then they were aware of the risk. The driving simulation was then associated with the quantity of Zolpidem in the blood, if there was 50nanograms/milliliter that can cause accidents, as confirmed by Dr. Ellis Unger, Agency officer, Center for Drug Evaluation and Research.

Dr. Unger also said that all sleeping pills manufacturers have to perform driving trials; however a spokesperson said that it is not necessary. Dr. Unger also added that it is a big problem and he is not sure why this decision was taken so late.

For the immediate release products such as Zolpimist, Edluar and Ambien, the normal dosage needs to be lessened to5mg from 10mg. For extended release it has to be lessened to 6.25mg from 12.5mg. Most of Zolpidem containing drugs are now generic.

For men the label should state that lower dose should be considered.

Patient’s prescribed higher dose should take them but agency said that they should speak with their doctors about lowering them as doctors can again switch to higher one of the lower is not working, as said by Dr. Unger lower doses are available they are used in older patients.

The manufacturer of Ambien CR and Ambien is Sanofi, they said that, it is always recommended to check with your doctor for dosage and also to know what it is; the label has important information. Company is supporting the clinical trials that are required for efficacy and safety.

Dr. Unger said that there are reports that Zolpidem causes sleep walk, hence the lowering of the dose may lower this, though it is not as strong as drowsiness in the morning. One of the patients of Dr. Carlat was gaining weight as was not able to remember the midnight trips that he use to do to the kitchen.

Dr. Daniel Kripke, Professor, Psychiatry, University of California, he agreed to the move with happiness but at the same time he wants the agency to look for other side effects as well.

He said it is a good move and in a right way. He also said that sleeping pills increase the sleep by 20 mins but can hamper the next day’s performance.

Agency’s critic said that on the Intermezzo label, there is a clear warning for women; hence agency was well aware about the problem.

However Thomas Roth, Director, Sleep center, Henry Ford Hospital, Detroit, also sleeping pills makers’ consultant, said that agency was concerned about the sleepy driving, but now they care more, the lowered dose will surely help in this.

Agency said that every patient will have different dose and they will be prescribed accordingly, however the dosage will be as lowest as possible.

Dr. Daniel J. Buysse, Professor, Psychiatry, University of Pittsburgh School of Medicine, said that he has started telling the patient to take half dose if required by telling to cut the tablet half.

Also said that we will have to be more attentive in this and will not have big effect in what he has done.

Wednesday, January 30, 2013

Tasimelteon, Sleep Disorder Drug, Shows Promising Result


Tasimelteon was able to pass the second trial which was late stage and the results were good. It is effective against a rare condition called NON-24: Non 24 hours sleep wake disorder.

NON -24 is a sleep cicadian rhythm disorder, the characteristics are like the person falls asleep and gets up hourly late, as the body clock cannot adjust properly to the cycle of dark and light. As a result people feel tired and exhausted during the day. The disorder is rare and can happen to 1 out of 2000 people; however it is common in people who are blind.  There is no approved treatment for it yet.

Vanda’s drug helps to regulate circadian rhythm and act as melatonin agonist. The master clock in hypothalamus is reset, that stabilizes cortisol and melatonin rhythms back to 24 hours cycle of night and day.
To check the safety and efficiency of the drug a study was conducted where people were treated.

Trial result were impressive
Tasimelteon was better as compared to Placebo, in the first late stage. 20mg of Tasimelteon was given to 20 patients for 2 months. The effectiveness of the drug was displayed in the first trial itself showing entertainment melatonin superiorly maintained in Tasimelteon patients.

The second trial had same results, where cortisol rhythm was maintained better in Tasimelteon as compared with Placebo patients. Hence they had normal and better sleep.

As said by Steven W. Lockley, Ph.D. from Division of Sleep Medicine in Brigham and Women's Hospital also he is Harvard Medical School teaching affiliate.

The result prove that Tasimelteon can entertain the circadian clock and to maintain the same the continue treatment is required. The entertainment should be also beneficial clinically and to treat NON-24 the master clock has to be entertainment needs to be maintained.

Vanda Pharmaceuticals Inc shares have gone up after this and they said that approval request will be send this midyear.

Mihael H. Polymeropoulos, CEO M.D and President, Vanda said that –

“We are happy with the result as this will help us to treat blind Non-24 patients. Also the result made a mark that for treating Non-24 chronic therapy is important. Once it is approved we are sure that Non-24 patient’s life will improve.”