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Edex

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Edex

Indications
Dosage
How Supplied

INDICATIONS

edex® (alprostadil for injection) is indicated for the treatment of erectile dysfunction due to neurogenic, vasculogenic, psychogenic, or mixed etiology.

DOSAGE AND ADMINISTRATION

edex® (alprostadil for injection) in the Treatment of Erectile Dysfunction

The dosage range of edex® (alprostadil for injection) for the treatment of erectile dysfunction is 1 to 40 mcg. The intracavernous injection should be given over a 5 to 10 second interval. In a study with a dose range of 1 to 20 mcg of edex® (alprostadil for injection) , the mean dose was 10.7 mcg at the end of the dose titration period. In two studies with a dose range of 1 to 40 mcg of edex® (alprostadil for injection) , the mean dose was 21.9 mcg at the end of the dose titration period. Doses greater than 40 mcg have not been studied. A ½ inch, 27 to 30 gauge needle is generally recommended for the intracavernous injection. The patient is advised not to exceed the optimum edex® (alprostadil for injection) dose which was determined in the doctor's office. The lowest possible effective dose should always be used.

Initial Titration in Physician's Office

Erectile Dysfunction of Vasculogenic, Psychogenic, or Mixed Etiology: Dosage titration should be initiated at 2.5 micrograms of alprostadil. If there is a partial response, the dose may be increased by 2.5 micrograms to a dose of 5 micrograms and then in increments of 5 to 10 micrograms, depending upon erectile response, until the dose that produces an erection suitable for intercourse and not exceeding a duration of 1 hour is reached. If there is no response to the initial 2.5-microgram dose, the second dose may be increased to 7.5 micrograms, followed by increments of 5 to 10 micrograms. The patient must stay in the physician's office until complete detumescence occurs. It there is no response, then the next higher dose may be given within 1 hour. If there is a response, then there should be at least a 1-day interval before the next dose is given.

Erectile Dysfunction of Pure Neurogenic Etiology (Spinal Cord Injury): Dosage titration should be initiated at 1.25 micrograms of alprostadil. The dose may be increased by 1.25 micrograms to a dose of 2.5 micrograms, followed by an increment of 2.5 micrograms to a dose of 5 micrograms, and then in 5-microgram increments until the dose that produces an erection suitable for intercourse and not exceeding a duration of 1 hour is reached. The patient must stay in the physician's office until complete detumescence occurs. If there is no response, then the next higher dose may be given within 1 hour. If there is a response, then there should be at least a 1-day interval before the next dose is given.

At-Home (Maintenance Therapy) Dosing Instructions

The first injections of edex® (alprostadil for injection) must be done at the physician's office by medically trained personnel. Self-injection therapy by the patient can be started only after the patient is properly instructed and well trained in the self-injection technique. The physician should instruct the patient to discard any needles which become bent during the self-injection procedure as these needles may break. The physician should make a careful assessment of the patient's skills and competence with the self-injection procedure. The intracavernous injection must be done under sterile conditions. The site of injection is usually along the lateral aspect of the proximal third of the penis. Visible veins should be avoided. The side of the penis that is injected and the site of injection must be alternated. The injection site must be cleansed with an alcohol swab before injection.

The dose of edex® (alprostadil for injection) that is selected for self-injection treatment should provide the patient with an erection that is satisfactory for sexual intercourse and that is maintained for no longer than 1 hour. If the duration of erection is longer than 1 hour, the dose of edex® (alprostadil for injection) should be reduced. The lowest effective dose should be used at home. Self-injection therapy for use at home should be initiated at the dose that was determined in the physician's office. Dose adjustment may be required and should be made only after consultation with the physician.

Careful and continuous follow-up of the patient while in the self-injection program must be exercised. This is especially true for the initial self-injections, since adjustments in the dose of edex® (alprostadil for injection) may be needed. The recommended frequency of injection is no more than 3 times weekly, with at least 24 hours between each dose. The reconstituted edex® (alprostadil for injection) cartridge and needle are intended for single use only and should be discarded after use. The user should be instructed in the proper disposal of the needles and cartridges.

While on self-injection treatment, it is recommended that the patient visit the prescribing physician's office every 3 months. At that time, the efficacy and safety of the therapy should be assessed, and the dose of edex® (alprostadil for injection) should be adjusted, if needed.

The patient is instructed to follow the enclosed PATIENT INFORMATION pamphlet.

Preparation of Solution

The edex® (alprostadil for injection) injection device is used to reconstitute the single-dose, dual-chamber cartridge. The plunger is used to force the sterile 0.9% sodium chloride (1.075 mL) in one chamber into the chamber containing alprostadil. After reconstitution, the edex® (alprostadil for injection) injection device is used to administer the intracavernous injection of alprostadil. The reusable edex® (alprostadil for injection) injection device is for use only with the cartridges and needles included in the edex® (alprostadil for injection) Cartridge Packs.

Prepare the edex® (alprostadil for injection) solution immediately before use. Do not administer unless solution is clear. Do not add any drugs or solutions to the edex® (alprostadil for injection) solution. Discard any unused solution remaining in the cartridge. The reconstituted solution should not be stored.

The edex® (alprostadil for injection) cartridge contains a solid layer or lyophilized cake of dry white powder approximately 3/8” in thickness. A normal cake may appear cracked or crumbled. If the cartridge is damaged, the cake may shrink in size. Do not use the cartridge if it appears damaged or the cake is substantially reduced in size.

Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration. The reconstituted solution may initially appear cloudy due to small air bubbles. Do not use the solution if it remains cloudy, contains precipitates, or is discolored.

CAUTION: Do not reuse any solution remaining in the cartridge due to the possibility of bacterial contamination.

Administration

edex® (alprostadil for injection) is given as an intracavernous injection over a 5 to 10 second interval. See PATIENT INFORMATION for edex® (alprostadil for injection) .

Stability

The single-dose, dual-chamber cartridge should be reconstituted only when it is certain that the patient is ready to administer the drug. The reconstituted drug solution should be used immediately after reconstitution. Any solution remaining in the cartridge should be discarded.

HOW SUPPLIED

edex® (alprostadil for injection) is available in single-dose, dual-chamber cartridges intended for use with the reusable edex® (alprostadil for injection) injection device. One chamber of the cartridge contains 10.75, 21.5 or 43.0 mcg of alprostadil as a white, sterile, lyophilized powder. The other chamber contains 1.075 mL of sterile 0.9% sodium chloride. When the cartridge is placed into the edex® (alprostadil for injection) injection device and reconstituted, the deliverable amount of alprostadil in each milliliter is 10, 20 or 40 micrograms, respectively. edex® (alprostadil for injection) Cartridge 2 Pack contains one reusable edex® (alprostadil for injection) injection device, two single-dose, dual-chamber cartridges, two ½ inch, 29 gauge (0.33 mm x 12.7 mm) needles, and four alcohol swabs. edex® (alprostadil for injection) Cartridge 6 Pack contains one reusable edex® (alprostadil for injection) injection device, six single-dose, dual-chamber cartridges, six ½ inch, 29 gauge (0.33 mm x 12.7 mm) needles, and twelve alcohol swabs.

The edex® (alprostadil for injection) cartridges are supplied in the following packages:

edex® (alprostadil for injection) Cartridge 2 Pack (includes one injection device, two cartridges, two needles and four alcohol swabs)

10 mcg 1 x 2 Pack NDC 0091-1110-16
20 mcg 1 x 2 Pack NDC 0091-1120-16
40 mcg 1 x 2 Pack NDC 0091-1140-16

edex® (alprostadil for injection) Cartridge 6 Pack (includes one injection device, six cartridges, six needles and twelve alcohol swabs)

10 mcg 1 x 6 Pack NDC 0091-1110-20
20 mcg 1 x 6 Pack NDC 0091-1120-20
40 mcg 1 x 6 Pack NDC 0091-1140-20

Store at 25°C (77°F); excursions permitted between 15° - 30°C (59° - 86°F).

Manufactured for: SCHWARZ PHARMA, Milwaukee, WI 53201, USA. By Vetter Pharma-Fertigung GmbH & Co. KG, Ravensburg, Germany. Rev. 01/06. FDA rev date: 6/9/2006

Last reviewed on RxList: 12/9/2008
This monograph has been modified to include the generic and brand name in many instances.

Indications
Dosage
How Supplied
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