Voltaren® (diclofenac sodium enteric-coated tablets) is a benzene-acetic acid derivative. Voltaren is available as delayed-release (enteric-coated) tablets of 75 mg (light pink) for oral administration. The chemical name is 2-[(2,6-dichlorophenyl)amino] benzeneacetic acid, monosodium salt. The molecular weight is 318.14.
Recently, a new topical pharmaceutical form of diclofenac sodium, i.e. MIKA Diclofenac Spray Gel 4%, has been patented. The spray gel consists of water, isopropyl alcohol and propylene glycol as basic solvents and soy bean lecithin, ethanol, disodium phosphate dodecahydrate, sodium dihydrogen phosphate dihydrate, peppermint oil and ascorbyl
Diclofenac free acid capsules: 35 mg orally thrice daily Diclofenac potassium immediate-release tablets: 50 mg orally twice or thrice daily Diclofenac sodium enteric-coated tablets: 50 mg orally twice or thrice daily or 75 mg orally twice daily Maximum dose: 150 mg daily Diclofenac sodium extended-release tablets: 100 mg orally once daily The diclofenac (Flector) patch is indicated for osteoarthritis and contains 180 mg of diclofenac; one patch is applied to the painful areas twice daily. Other FDA-approved antiinflammatory topical formulations include diclofenac sodium 1% gel (Voltaren) and diclofenac sodium topical liquid solution 1.5% w/w dimethyl sulfoxide (Pennsaid). .