SPL Set ID: 64dad603-2389-456b-8c18-d1d40b7e7419

Rivastigmine transdermal system contains rivastigmine USP, a reversible cholinesterase inhibitor known chemically as (S)-3-[1-(dimethylamino)ethyl]phenyl ethylmethylcarbamate. It has an empirical formula of C 14 H 22 N 2 O 2 as the base and a molecular weight of 250.34 g/mol (as the base). Rivastigmine is a viscous, clear, and colorless to yellow to very slightly brown liquid that is sparingly soluble in water and very soluble in ethanol, acetonitrile, n-octanol and ethyl acetate. The distribution coefficient at 37°C in n-octanol/phosphate buffer solution pH 7 is 4.27. Rivastigmine transdermal system is for transdermal administration. The transdermal system is a four-layer laminate containing (1) a foam backing with adhesive layer, (2) a polyester film, (3) an adhesive matrix containing rivastigmine, and (4) a fluoropolymer coated polyester release liner (see Figure 1). The release liner is removed and discarded prior to use. Figure 1: Cross Section of the Rivastigmine Transdermal System Layer 1: Copolymer foam backing with adhesive layer Layer 2: Polyester Film Layer 3: Adhesive Matrix Layer 4: Fluoropolymer coated Release Liner (removed at time of use) The active component of the system is rivastigmine. The remaining components of the system (colloidal silicon dioxide, light mineral oil, polyisobutylene adhesive, copolymer foam and polyester film) are pharmacologically inactive. Additionally, rivastigmine transdermal system is printed with pharmaceutical grade brown ink which contains acrylic polymers, carbon black, ethoxylated 2,4,7,9-tetramethyl 5 decyn-4,7-diol, iron oxide, octylphenoxypolyethoxyethanol, polyethylene glycol, polyethylene wax and polytetrafluoroethylene. Rivastigmine transdermal system Rivastigmine transdermal system