Gabapentin Dosage Forms

Gabapentin is a structural analogue of the inhibitory neurotransmitter gamma-aminobutyric acid (GABA) that was first approved for use in the United States in 1993.

It was originally developed as a novel anti-epileptic for the treatment of certain types of seizures- today it is also widely used to treat neuropathic pain.

Gabapentin has some stark advantages as compared with other anti-epileptics, such as a relatively benign adverse effect profile, wide therapeutic index, and lack of appreciable metabolism making it unlikely to participate in pharmacokinetic drug interactions. It is structurally and functionally related to another GABA derivative, pregabalin.

Neurontin (gabapentin) capsules and tablets are supplied as follows:

100-mg capsules:

Hard gelatin CONI-SNAP^® capsules with white opaque body and cap printed with “PD” on one side and “Neurontin /100 mg” on the other. -bottles of 100 capsules

300-mg capsules:

Hard gelatin CONI-SNAP^® capsules with yellow opaque body and cap printed with “PD” on one side and “Neurontin /300 mg” on the other. -bottles of 100 capsules

400-mg capsules:

Hard gelatin CONI-SNAP^® capsules with orange opaque body and cap printed with “PD” on one side and “Neurontin /400 mg” on the other. -bottles of 100 capsules

600 mg tablets:

White, elliptical, biconvex, film-coated tablet with bisecting score on both sides and debossed with “NT” and “16” on one side. -bottles of 100 tablets

800 mg tablets:

White, elliptical biconvex, film-coated tablet with bisecting score on both sides and debossed “NT” and “26” on one side. -bottles of 100 tablets

Capsules contain : gabapentin, lactose, corn starch, and talc, Capsule shells may contain : gelatin, titanium dioxide, silicon dioxide, sodium lauryl sulfate, yellow iron oxide, red iron oxide, and FD&C Blue No. 2.

Tablets contain : gabapentin, poloxamer 407 NF, copolyvidone, corn starch, magnesium stearate, hydroxypropylcellulose, talc and candelilla wax.