Gavinue NT 10/75mg Capsule 10s

Gavinue NT 10/75mg Capsule 10s combines Nortriptyline and Pregabalin, two pharmacologically distinct agents that work through different but complementary mechanisms to manage neuropathic pain.

Neuropathic pain arises from damage or dysfunction within the peripheral or central nervous system. Unlike pain caused by tissue injury, it originates from abnormal nerve signalling and may present as burning, tingling, shooting, or electric shock-like sensations. It is commonly associated with conditions such as diabetic neuropathy, postherpetic neuralgia, fibromyalgia, and nerve injury related to chemotherapy or spinal disorders.

Nortriptyline belongs to the tricyclic antidepressant (TCA) class and is used at lower doses for pain management than for depression. It may inhibit the reuptake of norepinephrine and serotonin in the central nervous system, enhancing descending pain inhibitory pathways that help suppress pain signals. It may also stabilise nerve membranes through sodium channel effects, contributing to its analgesic properties.

Pregabalin belongs to the gabapentinoid class and binds to the alpha-2-delta subunit of voltage-gated calcium channels in the nervous system. This reduces calcium influx into nerve terminals and decreases the release of excitatory neurotransmitters such as glutamate and substance P. The result is reduced neuronal hyperexcitability, a key contributor to neuropathic pain.

When used together, Nortriptyline and Pregabalin may provide broader and more sustained pain relief than either medicine alone. Both agents are well absorbed orally. Nortriptyline is primarily metabolised in the liver, while Pregabalin is eliminated largely unchanged through the kidneys. Regular clinical monitoring may be recommended to optimise safety and effectiveness.

Diabetic Peripheral Neuropathy

Management of chronic burning, shooting, or tingling pain associated with nerve damage caused by long-standing diabetes.

Postherpetic Neuralgia

Relief of persistent nerve pain following a shingles (herpes zoster) infection, which can remain long after the rash has resolved.

Fibromyalgia

Management of widespread musculoskeletal pain and hypersensitivity associated with this chronic pain condition.

Chemotherapy-Induced Peripheral Neuropathy

Adjunctive management of nerve pain arising as a consequence of cancer treatment.

Central Neuropathic Pain

Treatment of pain associated with spinal cord injury or other central nervous system disorders.

Mixed Neuropathic Pain Syndromes

Management of chronic pain conditions where both peripheral sensitisation and central hyperexcitability contribute to the overall pain experience.

• Complementary Dual Mechanism: Nortriptyline enhances descending pain inhibitory pathways while Pregabalin reduces neuronal hyperexcitability, together providing broader and more sustained neuropathic pain relief than monotherapy.

• Lower Individual Doses: Combining two agents with different mechanisms may allow each to be used at lower doses than would be required if used alone, potentially reducing the intensity of dose-related side effects.

• Addresses Multiple Dimensions of Neuropathic Pain: This combination may help manage not only pain intensity but also associated sleep disturbance and anxiety, which frequently accompany chronic neuropathic conditions.

• Improved Quality of Life: By reducing the burden of chronic pain and its associated features, Gavinue NT 10/75mg Capsule 10s may support meaningful improvements in daily functioning, sleep quality, and overall wellbeing.

Gavinue NT 10/75mg Capsule 10s may cause side effects, although not everyone will experience them. Most reactions are mild and temporary, but some can be more serious and require medical attention.

Common Side Effects

• Drowsiness or sedation, particularly during the initial weeks of treatment

• Dizziness or light-headedness

• Dry mouth

• Constipation

• Weight gain

• Mild peripheral oedema (fluid retention in the hands or feet, associated with Pregabalin)

• Blurred vision

Uncommon Side Effects

• Difficulty with concentration or memory

• Unsteadiness or coordination difficulties (ataxia)

• Increased appetite

• Urinary hesitancy or retention

• Mild tremor

• Sweating

• Sexual dysfunction

Serious Side Effects (Require Immediate Medical Attention)

• Mood changes, including worsening depression or suicidal thoughts

• Severe allergic reactions (swelling, rash, breathing difficulty)

• Irregular heartbeat or palpitations

• Symptoms suggestive of Serotonin syndrome (agitation, tremor, sweating)

• Breathing difficulties or excessive sedation

• Seizures, particularly with abrupt discontinuation

Gavinue NT 10/75mg Capsule 10s should be taken exactly as prescribed by your doctor. It is often taken once daily, typically in the evening, as its sedative effects may be better tolerated at night and may support sleep.

Treatment is usually started at a low dose and increased gradually to minimise side effects and improve tolerability. It may be taken with or without food. If stomach discomfort occurs, taking it with food may help.

Because neuropathic pain medicines act gradually, it may take several weeks to experience full benefit. Treatment adjustments should always be guided by a healthcare professional.

Nortriptyline and Pregabalin act at different points in the nervous system to reduce neuropathic pain.

Nortriptyline enhances the activity of norepinephrine and serotonin in the central nervous system. These neurotransmitters are involved in descending pathways that naturally inhibit pain signals travelling from the body to the brain. By strengthening these pathways, Nortriptyline may reduce pain perception.

Pregabalin reduces calcium entry into nerve cells by binding to voltage-gated calcium channels. This decreases the release of excitatory neurotransmitters that amplify pain signals, thereby reducing nerve hyperexcitability.

Together, these mechanisms provide a synergistic effect, addressing both the amplification and perception of pain.

• Allow Time for the Medicine to Work: Neuropathic pain treatment may take several weeks to show meaningful benefit. Continuing treatment as prescribed and reviewing progress during follow-up may help ensure optimal outcomes.

• Do Not Stop Pregabalin Abruptly: Gradual dose reduction under medical supervision is important, as sudden discontinuation may lead to withdrawal symptoms such as anxiety, insomnia, nausea, and, in rare cases, seizures.

• Monitor Mood Changes: A small risk of mood changes may occur, particularly in the early stages of treatment. Any new or worsening symptoms such as low mood, agitation, or distressing thoughts should be promptly communicated to a healthcare provider.

• Reduce Risk of Falls: Dizziness, sedation, and changes in blood pressure may increase fall risk, especially in older adults. Moving slowly from sitting or lying positions and maintaining a safe environment may help reduce this risk.

• Share Complete Medication History: Informing healthcare providers about all medicines, including over-the-counter products and supplements, may help minimise the risk of drug interactions and support safer treatment.

• Alcohol (SEVERE): Alcohol may significantly increase the sedative effects of this medicine, leading to excessive drowsiness, poor coordination, and, in some cases, slowed breathing. It is generally recommended to avoid alcohol during treatment.

• Caffeine (MILD): High caffeine intake may reduce feelings of drowsiness, but it is unlikely to affect pain relief. Excess caffeine may also interfere with sleep, which can indirectly influence pain control.

• Food in General (NO INTERACTION): Food does not significantly affect how this medicine is absorbed. Taking it with a light meal may help if mild stomach discomfort occurs.

MAO Inhibitors (SEVERE): This medicine should not be used with MAO inhibitors, as this combination may cause serious and potentially life-threatening reactions. A gap between treatments is required.

• Other Sedating Medicines (SEVERE): Medicines such as opioids, benzodiazepines, or certain antihistamines may increase drowsiness and breathing-related effects when taken together. Your doctor may monitor you closely if these are needed.

• Other Antidepressants (MODERATE): Combining with certain antidepressants may increase the risk of symptoms such as restlessness, sweating, or tremor. Reporting these symptoms early may help manage them.

• Anticholinergic Medicines (MODERATE): Taking similar medicines together may increase side effects like dry mouth, constipation, or difficulty passing urine.

• Heart Rhythm Medicines (MODERATE): Some medicines used for heart rhythm may increase the level of Nortriptyline in the body, which may raise the risk of side effects.

• Blood Pressure Medicines (MODERATE): This medicine may affect how some blood pressure treatments work. Regular monitoring may help maintain stable control.

• Gabapentin (MILD): Taking gabapentin with this medicine may increase drowsiness or dizziness and is usually avoided unless advised by your doctor.

• Tramadol (MODERATE): Using tramadol together with this medicine may increase the risk of certain side effects, including restlessness or seizures. Careful medical supervision is recommended.

• Cardiac Arrhythmias or QT Prolongation (SEVERE): Nortriptyline may affect heart rhythm. Individuals with pre-existing heart rhythm disorders may require careful evaluation and monitoring before starting treatment.

• Epilepsy or Seizure Disorders (MODERATE): Pregabalin is used in seizure management, but stopping it suddenly may increase the risk of seizures. Any dose changes should be gradual and medically supervised.

• Severe Renal Impairment (SEVERE): Pregabalin is cleared through the kidneys. Reduced kidney function may lead to drug accumulation and increased side effects, so dose adjustment may be necessary.

• Severe Hepatic Impairment (MODERATE): Nortriptyline is processed in the liver. Liver impairment may increase drug levels in the body and raise the risk of side effects.

• Bipolar Disorder (MODERATE): Nortriptyline may trigger mood elevation or manic episodes in individuals with bipolar disorder. Careful psychiatric assessment may be required.

• Benign Prostatic Hyperplasia or Urinary Retention (MODERATE): Nortriptyline may worsen difficulty in passing urine due to its anticholinergic effects.

• Closed-Angle Glaucoma (MODERATE): Nortriptyline may increase eye pressure in susceptible individuals, potentially worsening glaucoma.

If a dose is missed, it may be taken when remembered, unless it is close to the next scheduled dose. In such cases, the missed dose should be skipped.

Do not take a double dose to make up for a missed one. Maintaining a consistent dosing schedule supports optimal symptom control.