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You are here: Home / Health / FDA Approves Vanda’s Hetlioz- First Treatment For Non-24 Hour Sleep-Wake FDA Disorder

FDA Approves Vanda’s Hetlioz- First Treatment For Non-24 Hour Sleep-Wake FDA Disorder

February 2, 2014 Posted by Staff

fdaVanda Pharmaceuticals Inc. announced on Friday that the U.S. Food and Drug Administration has accepted the first drug Hetlioz (tasimelteon) 20mg capsules, a melatonin receptor agonist to treat a sleep condition that affects blind individuals.

Vanda anticipates making Hetlioz commercially available in the second quarter of 2014.

The sleep disorder root to the inability of a completely blind person to regulate the body clock by identifying light from the dark. It is called as non-24 hour sleep-wake disorder (“non-24”).

Non-24 is a chronic circadian rhythm (body clock) disorder in the blind that causes problems with the timing of sleep.

People with non-24 may find their sleep patterns reversed, requiring to sleep during the day and to be awake at night.

“Non-24- hour sleep-wake disorder can prevent blind individuals from following the normal daily schedule that we all take for granted,” said Eric Bastings, M.D, deputy director of the Division of Neurology Products in the FDA’s Center for Drug Evaluation and Research. “Hetlioz can improve the ability to sleep at night and to be active during the day.”

The most common unpleasant response in the clinical trials were headache, increased liver enzymes (alanine aminotransferase) in the blood, perturbed sleep, urinary tract or upper respiratory infection, drowsiness and nightmares or unusual dreams.

After taking Hetlioz, patients should limit their activity to preparing for going to bed, because it can impair the performance of activities requiring complete mental alertness, the company said.

Hetlioz was evaluated in two clinical trials involving 104 completely blind individuals suffering from the sleeping disorder. The treatment resulted in significant improvement compared to placebo (inactive pill), both in increasing nighttime sleep and decreasing daytime sleep duration.

The company directs that Hetlioz should not be used in combination with fluvoxamine or other strong CYP1A2 inhibitors, because of a potentially large increase in exposure of Hetlioz, and a greater risk of adverse reactions. Hetlioz should be avoided in combination with rifampin or other CYP3A4 inducers, because of a potentially large decrease in exposure of Hetlioz, with reduced usefulness.

FDA officials said the new drug should be taken at the same time every night before bedtime and activities should be limited after taking the drug.

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Filed Under: Health Tagged With: AVanda's Hetlioz, FDA, Hetlioz, non 24 Hour Sleep-Wake Disorder, placebo, tasimelteon

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