Drug Catalog - Product Detail
CLONIDINE HCL TD PATCH WEEKLY 0.1MG/24HR 4CT
| NDC | Mfr | Size | Str | Form |
|---|---|---|---|---|
| 51862-0453-04 | MAYNE PHARMA | 4 | 0.1MG/24HR | TRANSDERMAL SYSTEM |
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Description
DESCRIPTION Clonidine transdermal system USP provides continuous systemic delivery of clonidine USP for 7 days at an approximately constant rate. Clonidine USP is a centrally acting alpha-agonist hypotensive agent. It is an imidazoline derivative with the chemical name 2, 6-dichloro-N-2-imidazolidinylidenebenzenamine and has the following chemical structure: C 9 H 9 Cl 2 N 3 M.W. 230.10 Chemical Structure System Structure and Components Clonidine transdermal system USP is a multi-layered film, 0.2 mm thick, containing clonidine USP as the active agent. The system areas are 4.33 cm 2 (clonidine USP 0.1 mg per day), 8.67 cm 2 (clonidine USP 0.2 mg per day) and 13 cm 2 (clonidine USP 0.3 mg per day) and the amount of drug released is directly proportional to the area (see Release Rate Concept ). The composition per unit area is the same for all three doses. The inactive ingredients are: aluminum, colloidal silicon dioxide, ethylene vinyl acetate copolymer, light mineral oil, microporous polypropylene membrane, pigmented polyethylene polyester film, polyisobutylene and silicon coated polyester film. Proceeding from the visible surface towards the surface attached to the skin, there are four consecutive layers: 1) a backing layer of polyester film; 2) a drug reservoir; 3) a microporous polypropylene membrane that controls the rate of delivery of clonidine USP from the system to the skin surface; 4) an adhesive formulation. Prior to use, a protective slit release liner of silicone coated polyester film that covers the adhesive layer is removed. Cross Section of the System: Figure Release Rate Concept Clonidine transdermal system USP is programmed to release clonidine USP at an approximately constant rate for 7 days. The energy for drug release is derived from the concentration gradient existing between a saturated solution of drug in the system and the much lower concentration prevailing in the skin. Clonidine USP flows in the direction of the lower concentration at a constant rate, limited by the rate-controlling membrane, so long as a saturated solution is maintained in the drug reservoir. Following system application to intact skin, clonidine USP in the adhesive layer saturates the skin site below the system. Clonidine USP from the drug reservoir then begins to flow through the rate-controlling membrane and the adhesive layer of the system into the systemic circulation via the capillaries beneath the skin. Therapeutic plasma clonidine USP levels are achieved 2 to 3 days after initial application of clonidine transdermal system USP. The 4.33, 8.67 and 13 cm 2 systems deliver 0.1, 0.2, and 0.3 mg of clonidine USP per day, respectively. To ensure constant release of drug for 7 days, the total drug content of the system is higher than the total amount of drug delivered. Application of a new system to a fresh skin site at weekly intervals continuously maintains therapeutic plasma concentrations of clonidine USP. If the clonidine transdermal system USP is removed and not replaced with a new system, therapeutic plasma clonidine USP levels will persist for about 8 hours and then decline slowly over several days. Over this time period, blood pressure returns gradually to pretreatment levels.
How Supplied
HOW SUPPLIED Clonidine transdermal system USP 0.1 mg/day, 0.2 mg/day or 0.3 mg/day are available as 4 pouched systems and 4 adhesive covers per carton. Each system is a round corner, rectangular flexible transdermal system with a tan matte backing and clear membrane. *Programmed Delivery - Clonidine in vivo Per Day Over 1 Week Debossed Total Clonidine Content Size NDC (for 4 systems) Clonidine Transdermal System 0.1 mg/day 0.1 mg 453 3.09 mg 4.33 cm 2 NDC 51862-453-04 Clonidine Transdermal System 0.2 mg/day 0.2 mg 454 6.19 mg 8.67 cm 2 NDC 51862-454-04 Clonidine Transdermal System 0.3 mg/day 0.3 mg 455 9.28 mg 13 cm 2 NDC 51862-455-04 STORAGE AND HANDLING Store at 20° to 25°C (68° to 77°F) [See USP Controlled Room Temperature]. KEEP THIS AND ALL MEDICATIONS OUT OF THE REACH OF CHILDREN.
Indications & Usage
INDICATIONS AND USAGE Clonidine transdermal system is indicated in the treatment of hypertension. It may be employed alone or concomitantly with other antihypertensive agents.
Dosage and Administration
DOSAGE AND ADMINISTRATION Apply clonidine transdermal system once every 7 days to a hairless area of intact skin on the upper outer arm or chest. Each new application of clonidine transdermal system should be on a different skin site from the previous location. If the system loosens during 7 day wearing, the adhesive cover should be applied directly over the system to ensure good adhesion. There have been rare reports of the need for patch changes prior to 7 days to maintain blood pressure control. To initiate therapy, clonidine transdermal system dosage should be titrated according to individual therapeutic requirements, starting with clonidine transdermal system 0.1 mg. If after one or two weeks the desired reduction in blood pressure is not achieved, increase the dosage by adding another clonidine transdermal system 0.1 mg or changing to a larger system. An increase in dosage above two clonidine transdermal system 0.3 mg is usually not associated with additional efficacy. When substituting clonidine transdermal system for oral clonidine or for other antihypertensive drugs, physicians should be aware that the antihypertensive effect of clonidine transdermal system may not commence until 2 to 3 days after initial application. Therefore, gradual reduction of prior drug dosage is advised. Some or all previous antihypertensive treatment may have to be continued, particularly in patients with more severe forms of hypertension. Renal Impairment Patients with renal impairment may benefit from a lower initial dose. Patients should be carefully monitored. Since only a minimal amount of clonidine is removed during routine hemodialysis, there is no need to give supplemental clonidine following dialysis.