Pregabalin

Postherpetic Neuralgia, Fibromyalgia ... show more

DRUG STATUS

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Approvals

US(FDA), UK(BNF)

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Essential Medicine

NO

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Teratogenicity

Unlisted

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Pharmaceutical Class

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Drug Ingredient

Pregabalin

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Summary

  • Pregabalin is primarily used to treat conditions such as neuropathic pain, fibromyalgia, and generalized anxiety disorder.

  • Pregabalin works by binding to specific calcium channels in the brain and spinal cord. This action reduces the release of neurotransmitters that cause pain and anxiety, thereby providing relief from these conditions.

  • Pregabalin capsules are taken orally, with or without food. The starting dose is usually 150 mg per day, taken in two doses of 75 mg each. The dose may be increased to 300 mg per day after one week, taken in two doses of 150 mg each. The maximum dose is 600 mg per day.

  • Common side effects of Pregabalin include dizziness, drowsiness, dry mouth, weight gain, and swelling in the hands or feet. Severe adverse effects can include allergic reactions, suicidal thoughts, mood changes, and rarely, muscle problems.

  • Pregabalin should be used with caution in people with a history of substance abuse, as it can be habit-forming. It is contraindicated in individuals with severe kidney problems. Pregnant or breastfeeding women should consult a doctor before use.

Indications and Purpose

What is Pregabalin used for?

Pregabalin is a medicine used to treat nerve pain caused by diabetes. It works by blocking certain nerve signals that cause pain.

How does Pregabalin work?

Pregabalin works by binding to specific calcium channels in the brain and spinal cord. This action reduces the release of excitatory neurotransmitters like glutamate, which are involved in pain, anxiety, and other symptoms. By modulating nerve signals, Pregabalin helps alleviate pain, anxiety, and seizures, promoting a calming effect on the nervous system.

Is Pregabalin effective?

Clinical studies have shown that Pregabalin is effective for treating conditions like neuropathic pain, fibromyalgia, and generalized anxiety disorder. Research indicates significant pain reduction and improved sleep quality in patients with nerve-related pain. Trials also show it effectively reduces anxiety symptoms, with many patients experiencing relief within a few days to weeks of starting treatment.

How does one know if Pregabalin is working?

The effectiveness of Pregabalin is evaluated through patient-reported outcomes, such as reduced pain intensity, improved mood, and enhanced quality of life. Healthcare providers monitor symptom improvement in conditions like neuropathic pain and anxiety. Clinical assessments, questionnaires, and follow-up visits help determine how well the medicine is working for each individual.

Directions for Use

What is the usual dose of Pregabalin?

For adults, start with 150 mg daily. If tolerated, increase to 300 mg per day after a week. The highest dose is 600 mg per day. For children: - Weighing 30 kg or more: Start with 2.5 mg/kg/day, up to a maximum of 10 mg/kg/day (not more than 600 mg/day). - Weighing less than 30 kg: Start with 3.5 mg/kg/day, up to a maximum of 14 mg/kg/day. Take the medicine 2-3 times a day. Children under 4 should take it 3 times a day.

How do I take Pregabalin?

Pregabalin can be taken with or without food. It’s usually taken once or twice daily, depending on the prescribed dosage. There are no specific food restrictions, but it’s important to avoid alcohol, as it can increase the risk of side effects like dizziness or drowsiness. Always follow your doctor’s instructions for the correct dosage.

For how long do I take Pregabalin?

The typical duration of pregabalin use varies based on the condition being treated:

  • Epilepsy: Often used long-term, potentially for many years once the condition is stable.
  • Nerve Pain or Anxiety: Generally prescribed for several months to manage symptoms and prevent recurrence, with ongoing evaluation by a healthcare provider.

Patients should consult their doctor for personalized recommendations regarding the duration of treatment.

How long does it take for Pregabalin to start working?

Pregabalin typically starts showing effects within a few days, but it may take up to 2 weeks for the full benefit, especially for conditions like anxiety or neuropathic pain. The time it takes to feel relief can vary depending on the individual and the condition being treated. Always follow your doctor’s guidance.

How should I store Pregabalin?

Keep pregabalin capsules in their original package at room temperature between 68°F to 77°F (20°C to 25°C). Throw away any expired or unused capsules. Keep all medications out of reach of children.

Warnings and Precautions

Who should avoid taking Pregabalin?

Pregabalin should be used with caution in people with a history of substance abuse, as it can be habit-forming. It may also cause dizziness or drowsiness, so driving or operating heavy machinery should be avoided. Pregabalin is contraindicated in individuals with severe kidney problems. Pregnant or breastfeeding women should consult a doctor before use. Always follow medical advice.

Can I take Pregabalin with other prescription drugs?

Pregabalin is a medication that is not likely to interact with other drugs. However, taking erythromycin with pregabalin can decrease the amount of pregabalin in your body. Also, taking pregabalin with medications that can cause constipation, such as opioid painkillers, may increase your risk of having problems with your bowels (such as constipation, blockage, or paralysis).

Can I take Pregabalin with vitamins or supplements?

Pregabalin has no known major interactions with vitamins or supplements. However, caution should be exercised when taking supplements like magnesium or calcium, as they can potentially affect Pregabalin’s absorption. It's important to consult a healthcare provider before combining Pregabalin with any supplements to avoid unintended effects or interactions.

Can Pregabalin be taken safely while pregnant?

Pregabalin is classified as a Category C medication during pregnancy, meaning its safety is not well-established. Animal studies have shown potential risks to the fetus, including developmental issues. Pregabalin should only be used during pregnancy if the benefits outweigh the risks, and it should be prescribed by a healthcare provider after careful evaluation. Always consult a doctor before using it during pregnancy.

Can Pregabalin be taken safely while breastfeeding?

Pregabalin is excreted in breast milk, but the effects on a nursing infant are not well-studied. Due to potential risks, it is generally advised to avoid breastfeeding while taking Pregabalin. If it is necessary for the mother to take this medication, the healthcare provider may recommend alternative feeding options or close monitoring of the infant for any adverse effects.

Is Pregabalin safe for the elderly?

When using pregabalin in elderly patients, several recommendations and warnings are important for safe administration:

  • Lower Starting Dose: Initiate treatment with a lower dose (e.g., 25 mg twice daily) to reduce the risk of adverse effects, such as dizziness and sedation.
  • Gradual Titration: Increase the dose slowly to find the lowest effective dose that provides pain relief while minimizing side effects.
  • Monitor Renal Function: Regularly assess renal function, as dosage adjustments may be necessary due to age-related changes.
  • Be Aware of Adverse Effects: Elderly patients may experience increased sensitivity to side effects, including cognitive issues and balance problems.

Is it safe to exercise while taking Pregabalin?

Yes, but dizziness or fatigue may limit activity. Start light and avoid high-risk exercises if unsteady. Follow your doctor’s guidance.

Is it safe to drink alcohol while taking Pregabalin?

No, alcohol may worsen dizziness, drowsiness, and mood changes. Avoid drinking while on Pregabalin.