What Is This Medicine
and What Is It Used For?
Cabalin (pregabalin 25 mg) is an anticonvulsant and analgesic agent belonging to the gabapentinoid class.
Pregabalin is approved for: neuropathic pain associated with
diabetic peripheral neuropathy (DPN); post-herpetic neuralgia (PHN, the
persistent burning pain after shingles); neuropathic pain associated with
spinal cord injury; fibromyalgia; and as adjunctive therapy for partial-onset
seizures in epilepsy (adults and children from 1 month of age).
Off-label uses include generalised anxiety disorder (approved
in the EU), restless legs syndrome, and alcohol withdrawal.
The 75 mg capsule is typically used as a starting or
maintenance dose and is adjusted upwards based on clinical response and
tolerability. Pregabalin is renally excreted and dose adjustment is required in
patients with renal impairment.
How to Take This
Medicine
Cabalin 75 mg capsules may be taken with or without food.
Swallow whole with water. Take at the same time each day for consistent
effect.
Neuropathic Pain (Diabetic Peripheral Neuropathy, PHN)
• Starting dose: 75 mg once daily (150 mg/day).
• After 1 week: May be
increased to 150 mg daily based on efficacy and tolerability.
• Maximum dose: 300 mg twice
daily (600 mg/day) for patients who do not achieve sufficient pain relief at
lower doses.
Fibromyalgia
• Start: 75 mg once daily. Increase to 150 mg
once daily within 1 week if
tolerated.
• Maximum: 225 mg twice
daily (450 mg/day).
Spinal Cord Injury Neuropathic Pain
• Start: 75 mg twice daily.
Increase to 150 mg twice daily within 1 week.
• Maximum: 300 mg twice
daily (600 mg/day).
Epilepsy (Adjunct for Partial-Onset Seizures)
• Adults: Start 75 mg twice
daily; increase to 150 mg twice daily; maximum 300 mg twice daily (600 mg/day).
Renal Impairment Dose Adjustment
• CrCl 30–59 mL/min: 75–300
mg/day in 2–3 divided doses.
• CrCl 15–29 mL/min: 25–150
mg/day in 1–2 divided doses.
• CrCl <15 mL/min or
haemodialysis: 25–75 mg once daily; supplemental dose after each dialysis
session.
Side Effects
Side effects vary in frequency and severity. Not every
patient will experience all listed effects. Seek immediate medical attention
for any serious or unexpected reactions.
|
Category |
Side Effects |
|
Common |
Dizziness (most common, particularly
at initiation); Somnolence and drowsiness; Peripheral oedema (ankle/leg
swelling); Dry mouth; Blurred vision; Weight gain; Difficulty concentrating
or "thinking abnormal"; Constipation; Headache |
|
Serious |
Respiratory depression: Rare but
potentially life-threatening, particularly with concomitant CNS depressants
or opioids. Risk is higher in elderly, COPD, or obese patients.; Suicidal
ideation: All anticonvulsants, including pregabalin, carry a class-wide
warning of increased suicidality risk.; Angioedema: Swelling of face, mouth,
throat, discontinue immediately.; Severe hypersensitivity reactions. |
|
Rare / Severe |
Stevens-Johnson syndrome; Acute
renal failure; Thrombocytopenia |
Contraindications
|
⚠ CONTRAINDICATIONS |
|
• Known hypersensitivity to pregabalin or any excipient |
|
• Severe renal impairment without dose adjustment |
|
• Rare hereditary problems of galactose intolerance or
glucose-galactose malabsorption (if formulation contains lactose) |
Safety Warnings and
Special Precautions
• Respiratory depression:
Life-threatening respiratory depression has been reported with gabapentinoids,
particularly when combined with opioids, CNS depressants, or in patients with
respiratory compromise. Monitor closely.
• Suicidal ideation: A
class-wide warning applies to all anticonvulsants. Monitor for new or worsening
depression, anxiety, or suicidal thoughts, especially in the first weeks of
treatment.
• Abrupt withdrawal: Do not
stop suddenly after prolonged use. Taper gradually over at least 1 week to avoid
withdrawal symptoms (insomnia, nausea, headache, anxiety) and risk of seizure
exacerbation.
• Dizziness and somnolence:
Impairs driving ability. Advise patients not to drive until they have
established their personal response to pregabalin.
• Peripheral oedema: Monitor
patients with cardiovascular or renal risk factors for oedema and fluid
retention.
• Abuse potential: Although
not scheduled as a controlled substance in Kenya, pregabalin has been
recognised globally as having significant misuse potential, particularly in
combination with opioids or benzodiazepines. Prescribers should be vigilant.
• Pregnancy: Associated with
major congenital malformations in animal studies. Effective contraception
required during treatment. Not recommended in pregnancy.
Drug Interactions
The following interactions are clinically significant. Always
inform your healthcare provider of ALL medicines, supplements, and herbal
products you are taking.
• Opioids and CNS
depressants (including alcohol): Additive CNS depression and respiratory
depression, life-threatening combination.
• Benzodiazepines: Additive
CNS depression; risk of respiratory compromise.
• Thiazolidinediones
(pioglitazone, rosiglitazone): Pregabalin may increase fluid retention and
oedema risk.
• Alcohol: Additive CNS
impairment; avoid.
• Lorazepam or oxycodone: No
pharmacokinetic interaction, but additive pharmacodynamic effects on CNS
depression.
Storage Instructions
Store below 30°C. Keep in original packaging. Keep out of
reach of children. Protect from moisture.
Prescription Status in
Kenya
|
💊 PRESCRIPTION ONLY MEDICINE (POM) in Kenya.
While not formally scheduled as a controlled substance under Kenyan law at
the time of publication, pregabalin is subject to increasing regulatory
scrutiny due to its abuse potential. Prescriptions should be from a
registered medical practitioner, ideally with documentation of the specific
neuropathic pain or epilepsy indication. |
Patient Guidance
|
ℹ PATIENT GUIDANCE |
|
• Pregabalin takes time to reach its full effect, continue
taking it even if you do not notice immediate relief. |
|
• Common side effects like dizziness and drowsiness
are often worst at the start of treatment and tend to improve. |
|
• Avoid alcohol, it worsens the drowsiness and
dizziness caused by pregabalin. |
|
• Do not drive or operate machinery until you know how
the medicine affects you. |
|
• Do not stop pregabalin suddenly, this can worsen
your condition. Reduce the dose slowly as directed by your doctor. |
|
• Swelling of your face, lips, or throat is a medical
emergency, stop the medicine and seek help immediately. |
|
• If you are on pregabalin for epilepsy, continue even
if seizures seem controlled, stopping suddenly can trigger breakthrough
seizures. |
Pharmacist / Prescriber
Notes
Cabalin 75 mg (pregabalin) is a POM in Kenya. Although not
yet formally scheduled as a controlled substance in Kenya, prescribers and
pharmacists should be aware that pregabalin has well-documented misuse
potential, particularly in combination with opioids and benzodiazepines. Screen
for concurrent CNS depressant prescriptions at point of dispensing. Counsel
patients on the risk of respiratory depression in this context. Renal function
must be assessed before initiating therapy; dose adjustment is mandatory in
renal impairment. Pregabalin must not be stopped abruptly in epilepsy patients,
emphasise this at every dispensing encounter.
Frequently Asked
Questions (FAQs)
Q1: What type of pain does pregabalin
treat?
A: Pregabalin is specifically effective
for neuropathic pain, nerve pain caused by diabetes (burning feet/hands),
shingles, spinal cord injury, or fibromyalgia. It is not effective for ordinary
tissue or muscle pain (e.g., from a bruise or inflammation).
Q2: How long does it take for pregabalin
to relieve nerve pain?
A: Some patients notice improvement
within 1–2 weeks, but full therapeutic benefit may take 4–6 weeks. If there is
no significant benefit after 8 weeks at the maximum tolerated dose, the
medicine should be re-evaluated.
Q3: Will I gain weight on pregabalin?
A: Weight gain is a recognised side
effect, related to fluid retention and possible appetite increase. Maintaining
a balanced diet and regular activity can help minimise this. Discuss with your
doctor if weight gain is significant.
Q4: Can pregabalin be taken with my
opioid painkillers?
A: This combination requires very close
medical supervision. Both pregabalin and opioids depress the central nervous
system and slow breathing. The combination can be life-threatening without
careful monitoring. Never start or adjust this combination without your
doctor's knowledge.
Q5: Is pregabalin addictive?
A: Pregabalin has recognised misuse and
dependence potential, particularly at high doses or in people with a history of
substance misuse. Use exactly as prescribed, do not increase the dose without
medical advice, and do not stop suddenly.
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