País: Australia
Idioma: inglés
Fuente: Department of Health (Therapeutic Goods Administration)
Oxybutynin
Actavis Pty Ltd
Medicine Registered
OXYTROL ® 1 OXYTROL ® _Oxybutynin (Ox-y-BEWT-ee-nin) _ CONSUMER MEDICINE INFORMATION WHAT IS IN THIS LEAFLET This leaflet answers some common questions about the OXYTROL ® transdermal drug delivery system (patch). It does not contain all the available information. It does not take the place of talking to your doctor or pharmacist. All medicines have risks and benefits. Your doctor has weighed the risks of you being given OXYTROL ® against the benefits they expect it will have for you. IF YOU HAVE ANY CONCERNS ABOUT BEING GIVEN THIS MEDICINE, ASK YOUR DOCTOR OR PHARMACIST. KEEP THIS LEAFLET. You may need to read it again. WHAT OXYTROL ® IS USED FOR OXYTROL ® is a transdermal patch that is a treatment for overactive bladder. It delivers the active ingredient, oxybutynin, through your skin and into your bloodstream. Overactive bladder makes it hard to control when you urinate (pass water). Overactive bladder can make you urinate more often (increased frequency) or make you feel the need to urinate often (urgency). Overactive bladder can also lead to accidental urine loss (leaking or wetting oneself). The active ingredient in OXYTROL ® , oxybutynin, is dissolved in the thin layer of adhesive that sticks the patch to your skin. OXYTROL ® delivers the medicine slowly and constantly through your skin and into your bloodstream for the three or four days that you wear the patch. ASK YOUR DOCTOR IF YOU HAVE ANY QUESTIONS ABOUT WHY THIS MEDICINE HAS BEEN PRESCRIBED FOR YOU. Your doctor may have prescribed it for another reason. This medicine is not addictive. This medicine is only available with a doctor's prescription. Care should be taken when driving or operating machinery as this medicine may cause sleepiness or blurred Leer el documento completo
Product Information-Australia Version 5 Page 1 OXYTROL ® TRANSDERMAL DRUG DELIVERY SYSTEM NAME OF THE MEDICINE Oxybutynin The structure of oxybutynin 4-(diethylamino)but-2-ynyl (RS)-2-cyclohexyl-2-hydroxy-2-phenylacetate is given below. Oxybutynin is an antispasmodic, anticholinergic agent, and is administered as a racemate of R- and S-isomers. The molecular weight of the compound is 357.49 and the CAS number is 5633-20-5. Oxybutynin is a white powder, soluble in alcohol, but relatively insoluble in water. DESCRIPTION Oxytrol ® is a transdermal drug delivery system designed to deliver oxybutynin continuously and consistently over a 3 to 4 day interval after application on to intact skin. Oxytrol ® is available as a 39 cm 2 patch containing 36 mg of oxybutynin. Oxytrol ® has a nominal _in vivo_ delivery rate of 3.9 mg oxybutynin per day. TRANSDERMAL PATCH COMPONENTS Oxytrol ® is a matrix-type transdermal patch composed of three layers as illustrated in Figure 1 below. Layer 1 (Backing Film) is a thin flexible polyester/ethylene-vinyl acetate film that provides the matrix patch with occlusivity and physical integrity and protects the adhesive/drug layer. Layer 2 (Adhesive/Drug Layer) is a cast film of acrylic adhesive containing oxybutynin and glycerol triacetate. Layer 3 (Release Liner) is two overlapped siliconized polyester strips that are peeled off and discarded by the patient prior to applying the matrix patch. FIGURE 1: Side and top views of Oxytrol ® . (Not to scale) SIDE VIEW Product Information-Australia Version 5 Page 2 TOP VIEW PHARMACOLOGY The free base form of oxybutynin is pharmacologically equivalent to oxybutynin hydrochloride. Oxybutynin acts as a competitive anta Leer el documento completo