Zyloric 300mg (Allopurinol) 28 tablets in Kenya

ZYLORIC 300MG, provided in a pack of 28 tablets, contains Allopurinol 300mg as its active ingredient.¹ Zyloric is renowned as the original brand of Allopurinol in Kenya. Allopurinol is a medication primarily used to effectively lower high levels of uric acid in the body.² This is crucial for the long-term management of chronic conditions such as gout, preventing the formation of uric acid kidney stones, and mitigating the uric acid complications that can arise from certain cancer treatments. This medication is a prescription-only drug and necessitates close medical supervision.³

Unpacking the Formulation: Key Component and its Mechanism

Allopurinol’s mechanism of action is central to its effectiveness in addressing conditions related to excessive uric acid production.⁴

• Allopurinol (300mg):
  • Class: Xanthine Oxidase Inhibitor.⁵

     

  • Mechanism of Action: Allopurinol works by inhibiting the enzyme xanthine oxidase. This enzyme plays a vital role in the body’s purine metabolism, converting hypoxanthine to xanthine, and then xanthine to uric acid.⁶ By blocking xanthine oxidase, allopurinol significantly reduces the overall production of uric acid.⁷ This leads to a decrease in both serum (blood) and urinary uric acid levels.⁸ Lowering uric acid concentrations prevents the precipitation of uric acid crystals in joints (the cause of gouty arthritis) and kidneys (leading to kidney stones).⁹ The 300mg strength is often used for maintenance therapy in patients with well-established gout or higher baseline uric acid levels, or for rapid uric acid reduction in specific clinical scenarios like preventing tumor lysis syndrome.

     

Addressing Health Concerns and User Needs

Zyloric (Allopurinol 300mg) is crucial for patients dealing with the severe manifestations of elevated uric acid, providing essential control and preventing complications.

• Chronic Gout Management: Essential for long-term control of gout by maintaining consistently low uric acid levels, thereby preventing recurrent painful attacks, reducing existing tophi (uric acid deposits), and preventing joint damage.¹⁰

   

• Severe Hyperuricemia: Specifically targets significantly elevated uric acid levels that could lead to serious health issues.
• Prevention of Kidney Stones: Crucial for individuals prone to uric acid kidney stones, helping to dissolve existing stones and prevent new ones.¹¹

   

• Complications of Cancer Therapy: Indispensable in preventing acute uric acid nephropathy and other complications in patients undergoing chemotherapy or radiation, where rapid cell turnover can release large amounts of purines and elevate uric acid to dangerous levels (tumor lysis syndrome).¹²

   

Identifying Indications for Use

ZYLORIC 300MG (Allopurinol) is a prescription-only medication primarily indicated for:

• Chronic management of gout and its complications (e.g., gouty arthritis, tophi, urate nephropathy).¹³

   

• Management of hyperuricemia (high uric acid levels in the blood) when other methods are insufficient or inappropriate.
• Prevention of uric acid nephropathy (kidney damage) in patients with certain malignancies, particularly during antineoplastic therapy (chemotherapy or radiation).¹⁴

   

• Prevention of recurrent calcium oxalate kidney stones in patients with high urinary uric acid excretion who have not responded to dietary changes.

Primary Uses

The primary uses of ZYLORIC 300MG include:

• Significantly reducing serum and urinary uric acid concentrations to target levels.¹⁵

   

• Preventing the recurrence of acute gout attacks in patients with chronic gout.¹⁶

   

• Facilitating the dissolution of existing urate stones and preventing their formation.
• Protecting kidney function in patients at high risk of uric acid-induced kidney damage.¹⁷

   

Understanding Potential Side Effects and Critical Precautions

While Zyloric is a highly effective medication, it’s vital for patients and caregivers to be aware of its potential side effects and necessary precautions.

Common Side Effects (Generally mild but can be bothersome)

• Skin rash: This is the most common side effect and can range from mild maculopapular rash to severe, life-threatening reactions. Any rash should be reported to a doctor immediately.
• Gastrointestinal disturbances: Nausea, vomiting, diarrhea, abdominal discomfort.¹⁸ Taking with food may help.

   

• Drowsiness or dizziness.
• Headache.
• Changes in taste perception (dysgeusia).¹⁹

   

Less Common but More Serious Side Effects (Requiring Immediate Medical Attention)

• Severe Cutaneous Adverse Reactions (SCARs): These include Stevens-Johnson Syndrome (SJS), Toxic Epidermal Necrolysis (TEN), and Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS).²⁰ These are rare but can be fatal. Symptoms include widespread rash with blistering or peeling skin, fever, swollen lymph nodes, mouth sores, or flu-like symptoms. Immediate discontinuation of allopurinol and urgent medical attention are required if any skin rash or other SCAR symptoms appear.²¹ The risk is higher in individuals with certain genetic markers (HLA-B*5801 allele), particularly in some Asian populations, and in those with pre-existing kidney impairment.²²

   

• Liver dysfunction: Signs include yellowing of the skin or eyes (jaundice), dark urine, persistent nausea, severe stomach pain.
• Kidney impairment: Worsening of kidney function, blood in the urine, decreased urine output.
• Bone marrow suppression: Leading to a reduction in white blood cells (increasing infection risk), red blood cells (anemia), or platelets (increasing bleeding risk).
• Acute Gout Attack: Paradoxical worsening of gout attacks can occur during the initial weeks or months of therapy as uric acid is mobilized from tissue stores.²³ Prophylactic anti-inflammatory medication is often prescribed during this period.

   

• Hypersensitivity syndrome: Beyond skin reactions, this can involve fever, severe skin rash, hepatitis, kidney involvement, and eosinophilia.

Critical Safety Warnings and Precautions for ZYLORIC (Allopurinol)

ZYLORIC (Allopurinol) is a prescription-only medication.²⁴ Its use MUST be under the strict guidance and supervision of a qualified physician, including regular monitoring.

• Discontinue at First Sign of Rash: This is paramount. Allopurinol must be discontinued immediately at the first appearance of any skin rash, as it could be the initial symptom of a severe and potentially fatal hypersensitivity reaction.²⁵

   

• Not for Acute Gout Attacks: Allopurinol is a preventative medication and should not be used to treat an acute gout attack.²⁶ It should only be initiated after an acute attack has resolved. Prophylactic therapy (e.g., colchicine or NSAIDs) is typically used for the first 3-6 months concurrently with allopurinol to prevent treatment-induced flares.²⁷

   

• Renal Impairment: Patients with kidney impairment require significant dose adjustments to reduce the risk of serious side effects. Regular monitoring of kidney function is crucial.
• Liver Impairment: Use with caution in patients with liver disease. Periodic monitoring of liver function tests is recommended.
• Hydration: Patients should maintain adequate fluid intake (2-3 liters of water daily, unless medically contraindicated) to prevent uric acid kidney stone formation.²⁸

   

• Genetic Testing: In populations at higher risk (e.g., Han Chinese, Korean, Thai), HLA-B*5801 testing may be considered before starting allopurinol, as presence of this allele significantly increases the risk of severe skin reactions.²⁹

   

• Pregnancy and Breastfeeding: Consult a doctor. Allopurinol should only be used if clearly necessary and benefits outweigh risks. It passes into breast milk.³⁰

   

• Drug Interactions: Inform your doctor about all other medications, especially:
  • Azathioprine, Mercaptopurine: Allopurinol profoundly increases their toxicity. Their dose must be drastically reduced (often to 25-33% of original dose).
  • Warfarin: May enhance anticoagulant effect; monitor INR closely.³¹

     

  • Ampicillin/Amoxicillin: Increased risk of skin rash.³²

     

  • Thiazide diuretics (e.g., hydrochlorothiazide): May increase risk of allopurinol hypersensitivity.³³

     

  • ACE inhibitors (e.g., enalapril): Increased risk of hypersensitivity reactions.³⁴

     

  • Theophylline: Allopurinol can increase theophylline levels.
  • Didanosine: Allopurinol can increase didanosine exposure.³⁵

     

• Compliance: Do not stop taking allopurinol suddenly or without medical advice, even if symptoms improve.³⁶ Long-term adherence is key to preventing recurrences.³⁷

   

Recommended Dosage and Administration Guidelines

The dosage of ZYLORIC 300MG (Allopurinol) is highly individualized and determined by a physician based on the specific condition, patient’s response, and renal function.

• General Administration:
  • Take the tablet orally, once daily, preferably after a meal to minimize gastrointestinal upset.³⁸

     

  • Swallow the tablet whole with a full glass of water.³⁹

     

  • Ensure adequate fluid intake throughout the day (at least 2-3 liters of water daily, unless fluid restriction is medically advised) to aid uric acid excretion and prevent kidney stone formation.⁴⁰

     

• Typical Doses (Adults):
  • For chronic gout and hyperuricemia: The usual maintenance dose is 300mg once daily. However, dosage may vary from 100mg to 800mg daily, adjusted to achieve target serum uric acid levels (typically below 6 mg/dL, or below 5 mg/dL for tophaceous gout).
  • For prevention of uric acid nephropathy in cancer patients: Doses can range from 600mg to 800mg daily, usually started 2-3 days before chemotherapy.
• Dosage in Renal Impairment: For patients with impaired kidney function, the dose should be significantly reduced.⁴¹ For example, a common recommendation for creatinine clearance 10-20 mL/min is 200mg/day, and for CrCl <10 mL/min, 100mg/day or even less frequently (e.g., 100mg every other day).⁴²

   

• Initiation of Therapy: When starting allopurinol, particularly with this higher strength, a doctor may prescribe a lower initial dose (e.g., 100mg) and gradually titrate upwards.⁴³

   

• Duration of Treatment: For chronic conditions like gout, treatment with allopurinol is typically long-term, often lifelong, to maintain uric acid levels and prevent disease progression.⁴⁴

   

• Missed Dose: If a dose is missed, take it as soon as remembered unless it’s almost time for the next dose. Do not double the dose.

Price in Kenya (Approximate)

As of Wednesday, July 2, 2025, the approximate price for ZYLORIC 300MG (ALLOPURINOL 300MG ORIGINAL) – 28 TABS in Kenya can range from Ksh 3,500 to Ksh 5,500 per pack.

Note: Prices for prescription medications like ZYLORIC can vary significantly between different pharmacies, hospitals, and medical suppliers in Kenya.⁴⁵ Factors influencing price include the specific brand (Zyloric is the original brand, generic allopurinol may be cheaper), import costs, pharmacy markups, and any prevailing duties or taxes. It is advisable to check with specific vendors for the most current pricing.

Conclusion

ZYLORIC 300MG (Allopurinol), supplied as 28 tablets, is the original brand of allopurinol in Kenya, serving as a critical medication for the long-term management of gout, severe hyperuricemia, and the prevention of uric acid kidney stones and complications from cancer therapy. Its mechanism of inhibiting uric acid production provides effective control over these conditions.⁴⁶ As a prescription-only drug, its use necessitates stringent medical supervision, including careful dose titration and continuous monitoring for potential, albeit rare, severe side effects like life-threatening skin reactions.⁴⁷ Patients must adhere strictly to the prescribed regimen, immediately report any rash, ensure adequate hydration, and avoid abrupt cessation to ensure the safest and most effective management of their uric acid-related conditions.⁴⁸