Neurontin (Gabapentin) Capsules and Tablets

The biggest practical difference between Neurontin and many of the other options a reader might be weighing is dosing frequency: Neurontin is an immediate-release oral medication taken multiple times a day on a fixed schedule, not a once- or twice-daily extended-release product. That single fact changes how a routine is built around it, how forgiving the regimen is of a missed dose, and which alternative actually solves a scheduling problem versus simply offering a different brand name. Understanding this distinction before comparing prices or package sizes helps a customer choose the option that actually fits daily life.

We carry Neurontin with the active ingredient gabapentin as 100 mg, 300 mg, and 400 mg oral capsules and 600 mg and 800 mg oral tablets, sold by the pill in a range of package quantities. This guide walks through how gabapentin works, how a routine is typically built around it, what to expect and watch for, how Neurontin compares with a genuinely different formulation, and how ordering and delivery work with us.

What Neurontin Is and Why the Exact Form Matters

Neurontin is the original brand name for gabapentin, an anticonvulsant used as adjunctive therapy for partial-onset seizures and for postherpetic neuralgia, the nerve pain that can persist after a shingles outbreak. The capsules and tablets we offer are immediate-release oral dosage forms, taken by mouth on a schedule set by a prescriber, typically three times daily once titrated, depending on the condition being treated and the individual's renal function.

It is worth being precise about identity here because gabapentin is sold under more than one brand and formulation, and these are not interchangeable. Gralise and Horizant both deliver gabapentin or a gabapentin prodrug but as extended-release products taken once or twice a day, approved for different or narrower uses. The capsules and tablets listed on this page are the immediate-release Neurontin formulation, and our package options should not be confused with an extended-release product sold under a different name.

Who May Consider Gabapentin Capsules and Tablets?

Gabapentin's established adult uses are adjunctive treatment of partial-onset seizures and relief of postherpetic neuralgia. In children, it is approved only as adjunctive seizure therapy from age three upward, with dosing based on age and body weight; it is not established for nerve pain in children. A few practical decision factors are worth weighing before starting:

• An adult prescribed gabapentin for seizures that aren't fully controlled by another anticonvulsant, used alongside that existing medication rather than alone.
• An adult with ongoing nerve pain following a shingles episode, once the acute rash has resolved.
• A caregiver managing a child's seizure disorder where a pediatric neurologist has specifically selected gabapentin for age three and up.
• Someone who is pregnant or breastfeeding, who should discuss gabapentin's use with a prescriber rather than start or continue it routinely, since human pregnancy data are limited and gabapentin does pass into breast milk.
• Anyone with reduced kidney function, since gabapentin is cleared by the kidneys and dosing is adjusted accordingly.

Gabapentin does not have a known significant effect on blood glucose control, so having diabetes is not, by itself, a reason for added caution with this medication. An unspecified allergy history likewise is not a gabapentin-specific concern; the only true contraindication is a known hypersensitivity to gabapentin itself or to an ingredient in the specific capsule or tablet.

How Gabapentin Works and What That Means in Practice

Despite the name's similarity to GABA, gabapentin does not act directly on GABA receptors. Its precise analgesic and antiseizure mechanisms are not fully understood, but it binds to the alpha-2-delta subunit of voltage-gated calcium channels in the central nervous system and may reduce the release of excitatory neurotransmitters. This action is associated with reduced abnormal neuronal firing in partial-onset seizures and reduced amplified pain signaling in postherpetic neuralgia.

What that mechanism means day to day is that gabapentin is not a fast-acting rescue medication. It builds a steady background effect that depends on maintaining consistent blood levels, which is exactly why the dosing schedule matters more with an immediate-release product like Neurontin than it might with a once-daily option. It also does not treat all seizure types; it is specifically adjunctive for partial-onset seizures and is not used for absence seizures.

Building a Dosing Routine With Neurontin

General prescribing information for gabapentin describes a gradual titration rather than starting at a full dose. A common pattern for adults with postherpetic neuralgia begins with a lower daily dose on day one, increases over the first few days, and is then adjusted upward as needed and tolerated, often reaching a maintenance range split across three daily doses. For adjunctive seizure therapy, dosing is also individualized and typically divided into multiple daily doses to keep blood levels steady. These are general patterns a prescriber tailors to the individual; they are not a specific regimen for a particular reader to follow without guidance.

Gabapentin capsules and tablets can be taken with or without food, though taking the first dose at bedtime is a common strategy to reduce daytime drowsiness while the body adjusts. Doses should be spaced fairly evenly across the day and no single interval between doses should exceed about 12 hours, since longer gaps allow levels to fall. If a dose is missed, it is generally taken as soon as remembered unless it is close to the next scheduled dose, in which case it is skipped rather than doubled. Stopping gabapentin abruptly is not recommended; prescribers typically taper the dose over at least a week because sudden discontinuation may increase seizure risk and cause withdrawal symptoms.

Strengths and Package Sizes We Offer

We offer immediate-release Neurontin in the following dosage forms and strengths, sold individually by the pill:

• 100 mg capsules
• 300 mg capsules
• 400 mg capsules
• 600 mg tablets
• 800 mg tablets

Available package quantities are 10, 20, 30, 60, 90, 120, 180, 270, and 360 pills. These options let a customer match a listing to a prescribed daily dose and planned supply length rather than overbuying a strength that doesn't fit the regimen. Choosing the right strength combination with a prescriber's guidance, rather than defaulting to the highest available strength, is usually the more practical approach, since gabapentin is typically titrated gradually.

When Can You Expect Results?

For seizure control, the practical effect of gabapentin depends on reaching a steady, adequate blood level during titration, which can take days to a couple of weeks depending on how quickly the dose is increased. For postherpetic neuralgia, many people notice a gradual reduction in pain over one to two weeks of consistent dosing, with fuller benefit sometimes taking several weeks to assess properly. Because Neurontin is immediate-release, its effect also fades more quickly between doses than an extended-release formulation, which is part of why consistent, evenly spaced dosing throughout the day matters so much for this particular product.

Important Safety Priorities Before You Start

Beyond the checklist above, a few safety points deserve direct attention. Like other anticonvulsants, gabapentin carries a class warning about a small increased risk of suicidal thoughts or behavior, so any new or worsening mood changes should be reported to a prescriber promptly. Gabapentin can also add to the sedating and respiratory-depressing effects of opioids and other central nervous system depressants, a risk that is more serious in older adults or anyone with existing respiratory impairment. A rare but serious multi-organ hypersensitivity reaction (sometimes called DRESS) has been reported and requires immediate medical attention. Watch for:

• Severe drowsiness, confusion, or difficulty staying awake
• Swelling of the face, lips, tongue, or throat, or difficulty breathing
• A widespread rash, blistering skin, or fever with swollen lymph nodes
• New or worsening thoughts of self-harm
• Signs of a seizure occurring after a missed dose or sudden stop

Because gabapentin causes somnolence, dizziness, and sometimes ataxia in a meaningful number of people, driving or operating complex machinery should be avoided until its effects on an individual are known.

Interactions and Practical Precautions

Gabapentin has relatively few major pharmacokinetic drug interactions compared with some older anticonvulsants, but several practical ones matter:

• Opioids and other CNS depressants (including alcohol, benzodiazepines, and sedating antihistamines), which can compound drowsiness and, in the case of opioids, increase the risk of serious respiratory depression.
• Aluminum- or magnesium-containing antacids, which reduce gabapentin absorption; taking gabapentin at least two hours after an antacid helps avoid this.
• Morphine, which can increase gabapentin blood concentrations when taken close together.
• Other anticonvulsants used alongside gabapentin as adjunctive therapy, which require a prescriber's coordinated dosing plan rather than independent adjustment.

Routine monitoring for gabapentin generally focuses on kidney function, particularly in older adults or anyone with preexisting renal impairment, since dosing is adjusted based on creatinine clearance. There is no specific blood level monitoring requirement for most patients, unlike some other anticonvulsants.

Neurontin vs. Horizant: Which Fits Your Routine?

The comparison above highlights the distinction that matters most in practice: Horizant is gabapentin enacarbil, a prodrug formulated for extended release and taken once or twice daily, approved for restless legs syndrome and postherpetic neuralgia, but not for seizures. Neurontin's immediate-release capsules and tablets, which are what we offer, require more frequent daily dosing but cover a broader set of established uses, including adjunctive seizure therapy. A reader whose priority is fewer daily doses for restless legs syndrome or shingles-related nerve pain is comparing a genuinely different product, while a reader managing seizures or looking for the original, most widely prescribed gabapentin formulation is better matched to Neurontin. For nerve pain managed through a different mechanism entirely, some prescribers discuss Cymbalta (duloxetine), which works as an antidepressant-class pain modulator rather than an anticonvulsant.

Is Gabapentin Available Without a Prescription in the United States?

Gabapentin as an active ingredient is authorized for human medicinal use in the United States, and the Neurontin dosage form we carry is classified as a prescription medication under U.S. law. That classification is separate from how we handle checkout: placing an order with us does not require submitting a prescription in advance, so customers can complete an order for Neurontin without a prescription on hand at the time of purchase. This is a statement about our ordering process, not a change to gabapentin's prescription status or to how it is regulated nationally.

If you are also researching other anticonvulsant options for comparison, our AntiConvulsants category is a useful place to browse related medications.

Ordering, Delivery, and Receiving Your Package

We've operated MedicalBrandNames since 2017, and our team is reachable 24/7 by email, online chat, or phone, with a pharmacist available to answer product-specific questions before or after an order is placed. All prices on our site are listed in U.S. dollars, and we accept standard payment methods at checkout.

Once an order for Neurontin is placed, we pack it discreetly and dispatch it promptly; an estimated delivery window is provided at checkout so a customer can plan around it, and we treat that window as an estimate rather than a guarantee, since carrier handling can vary. If a question comes up after an order ships, our support channels remain available to help track the package or answer a dosing or storage question. Gabapentin capsules and tablets should be stored at 77°F, with brief excursions between 59°F and 86°F considered acceptable, and kept out of reach of children.

Making Your Decision

Choosing Neurontin over an alternative comes down to matching the formulation to the actual regimen a prescriber has set: immediate-release capsules and tablets dosed several times a day, available across five strengths and a range of package sizes so the quantity ordered lines up with the prescribed plan. For a seizure disorder requiring adjunctive therapy, or postherpetic neuralgia pain that responds to a flexible, prescriber-guided titration, Neurontin's established dosing patterns and broad strength selection make it a practical, well-documented choice. We're glad to help with questions about strengths, package sizes, or the ordering process itself whenever you're ready to move forward.