Product Summary

Zyloprim is a prescription medication containing allopurinol, a xanthine oxidase inhibitor used to manage gout, kidney stones, and high uric acid levels (hyperuricemia). Available in tablet form (100mg and 300mg), it reduces uric acid production to prevent painful joint inflammation and complications. Widely stocked in Kenyan pharmacies under strict medical supervision.

Key Benefits

• Uric Acid Reduction: Lowers serum uric acid by inhibiting xanthine oxidase, preventing gout attacks.
• Gout Prevention: Reduces frequency of acute flares and tophi (urate crystal deposits).
• Kidney Stone Management: Prevents calcium oxalate stones in hyperuricosuria.
• Chemotherapy Support: Protects against tumor lysis syndrome-induced hyperuricemia.
• Dose Flexibility: Available in 100mg (initiation) and 300mg (maintenance) strengths.

Composition

Active Ingredient per Tablet:

• Allopurinol:
  • 100mg (white, round tablet)
  • 300mg (peach, round tablet)

Other Ingredients:
Lactose, maize starch, povidone, magnesium stearate, sodium starch glycolate.

Free From:
Gluten (verify with manufacturer).

Bioavailability:
80–90% oral absorption; peak plasma levels in 1.5 hours. Metabolized in the liver.

How to Use

Dosage:

• Gout/Hyperuricemia:
  • Start 100mg/day, increase by 100mg weekly until target uric acid (<6 mg/dL).
  • Maintenance: 200–300mg/day (max 800mg/day in severe cases).
• Kidney Stones: 200–300mg/day.
• Chemotherapy Prophylaxis: 600–800mg/day starting 1–2 days before treatment.

Timing:

• Take after meals to reduce stomach upset.
• Maintain high fluid intake (2–3L/day) to prevent kidney stones.

Duration:

• Long-term: Lifelong for chronic gout/hyperuricemia.
• Reassess uric acid levels every 2–4 weeks during dose titration.

Potential Side Effects

Common Reactions:

• Nausea, diarrhea, rash.
• Drowsiness, headache.

Serious Risks (Rare):

• Hypersensitivity Syndrome: Fever, rash, renal impairment (discontinue immediately).
• Hepatotoxicity: Elevated liver enzymes (monitor LFTs).
• Blood Disorders: Leukopenia, thrombocytopenia (regular CBC monitoring).
• Acute Gout Flare: May occur during initiation (combine with colchicine/NSAIDs).

Precautions:

• Avoid if:
  • Hypersensitivity to allopurinol.
  • Acute gout attack (wait until inflammation subsides).
• Medical History:
  • Kidney/liver disease, heart failure.
  • HLA-B*5801 positivity (higher hypersensitivity risk in Asians/Africans).
• Drug Interactions:
  • Azathioprine/6-Mercaptopurine: Fatal interaction (reduce dose by 75%).
  • Warfarin: Enhanced anticoagulation (monitor INR).
  • Diuretics: Reduced uric acid excretion (adjust allopurinol dose).
• Pregnancy/Breastfeeding: Use only if essential (teratogenic in animals).

Frequently Asked Questions (FAQs)

1. Is Zyloprim available over-the-counter in Kenya?
   No – prescription-only. Available as Allopurinol (generic) or Zyloprim in major pharmacies (Goodlife, Meds).

2. How much does it cost?
   ~KES 50–150 per 100mg tablet; generics cost ~KES 30–80.

3. Why start with 100mg instead of 300mg?
   Low initiation reduces hypersensitivity risk; titrate based on uric acid levels.

4. Can it cure gout?
   No – it prevents flares by controlling uric acid. Existing joint damage may persist.

5. Are there Kenyan alternatives?
   Yes – Febuxostat (if allopurinol-intolerant) or Probenecid (increases uric acid excretion).

6. How does it benefit users in Kenya?

   • Diet-Related Gout: Counters high purine intake from red meat/organ meats (e.g., mutura, matumbo).
   • Alcohol Link: Mitigates gout flares triggered by local brews (e.g., chang’aa, busaa).
   • Cost-Effective: Generics are affordable for chronic use.

7. What if I miss a dose?
   Take when remembered unless near next dose. Never double-dose.

8. Can I take it during a gout attack?
   No – may worsen inflammation. Start after flare resolves (use NSAIDs/colchicine first).

Who Can Benefit

• Gout Patients: With recurrent flares or tophi.
• Hyperuricemia: Asymptomatic high uric acid (>8 mg/dL).
• Kidney Stone Formers: With uric acid/calcium oxalate stones.
• Cancer Patients: Undergoing chemotherapy (prevents tumor lysis syndrome).
• Organ Transplant Recipients: On cyclosporine (causes hyperuricemia).