No-Uric

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Medically reviewed

Laura Arias

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of No-Uric

Property Description
Active ingredient Allopurinol
Form Oral tablet
Pharmacological class Xanthine Oxidase Inhibitor (XOI)
Common use Management of elevated uric acid (Hyperuricemia)
Origin Synthetic compound

What Type of Medicine is No-Uric (Allopurinol)?

The medication No-Uric is defined by its active ingredient, Allopurinol, and belongs to the pharmacological class of Xanthine Oxidase Inhibitors (XOIs), which are agents clinically recognized for the long-term management of elevated uric acid levels. This medication is a synthetic compound, specifically engineered as a purine analogue, a structural mimic of the natural purine base hypoxanthine. It is typically supplied as a single-ingredient product in the form of an oral tablet for administration by mouth. The drug's classification as an XOI distinguishes it from other treatments, such as uricosuric agents, which act to increase uric acid excretion, as its action focuses on preventing the initial production of uric acid within the body.


How Does No-Uric Help Manage Uric Acid?

The primary purpose of taking No-Uric is to achieve sustained uric acid reduction by interfering with the body's natural metabolic pathways. It accomplishes this by blocking the xanthine oxidase enzyme, which is responsible for the final steps in converting purine bases into uric acid. The specific inhibition results in a systemic hypouricemic action, meaning the overall concentration of uric acid in the bloodstream is lowered and maintained at a stable level. Allopurinol therapy is used to achieve and maintain target serum urate concentrations. This effect helps ensure that uric acid levels remain low over time, which is a key component in managing a chronic condition like hyperuricemia. By consistently controlling the production of uric acid, the medication helps prevent its excessive accumulation in tissues and joints, thereby contributing to long-term physiological balance and supporting chronic condition management.

Regulatory References

  1. NIH MedlinePlus Allopurinol Drug Information

What side effects are possible with No-Uric?

Possible side effects and safety information

The safety profile of No-Uric (Allopurinol) is defined by officially documented adverse reactions classified by frequency and affected organ system, as established in government regulatory documents.

Frequency-Classified Adverse Reactions

Adverse reactions are formally categorized based on their incidence rates:

  • Common (ge 1/100 to < 1/10): Skin reactions, including rash; initial acute gout attacks are documented as common, particularly at the start of treatment.
  • Uncommon (ge 1/1,000 to < 1/100): Hypersensitivity reactions, gastrointestinal disorders such as nausea and vomiting, and transient elevations in liver enzymes.
  • Rare (ge 1/10,000 to < 1/1,000): Severe Cutaneous Adverse Reactions (SCARs), including Stevens-Johnson syndrome (SJS) and Toxic Epidermal Necrolysis (TEN), hepatitis, and blood dyscrasias.

System-Organ Classes and Serious Reactions

Side effects are grouped by the physiological system they affect, including Skin and Subcutaneous Tissue Disorders, Gastrointestinal Disorders, Hepatobiliary Disorders, and the Blood and Lymphatic System. The most critical safety concern highlighted in regulatory documents is the risk of Severe Cutaneous Adverse Reactions (SCARs), which are rare but life-threatening hypersensitivity events.

Population and Contextual Notes

The official label notes that adverse effects may be observed more frequently in older adults and in patients with existing renal impairment. The medication is strictly contraindicated in individuals with a known severe hypersensitivity to Allopurinol. Co-administration with certain other drugs, such as ampicillin or amoxicillin, is noted to increase the risk of skin rash.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose from excessive oral ingestion is primarily associated with non-specific gastrointestinal symptoms, including nausea and vomiting. However, the regulatory documentation focuses on life-threatening systemic reactions that require immediate emergency intervention, regardless of the dose.

Physiological systems affected (as stated in label): The most severe documented outcomes affect the dermatologic system (e.g., Stevens-Johnson Syndrome, Toxic Epidermal Necrolysis), the hepatic system (risk of irreversible hepatotoxicity), and the renal system (risk of acute failure).

Population-specific overdose notes: Patients with impaired renal function are formally documented to be at an increased risk of severe toxicity due to the retention of the active metabolite.

Emergency-response statements (as written in official documents):

  • Seek immediate medical attention for any suspected overdose.
  • The medication must be discontinued immediately and permanently at the first appearance of a skin rash or other signs of hypersensitivity, as this may precede life-threatening complications.
  • Management is symptomatic and supportive treatment; no specific antidote is known.
  • The procedure of Renal Dialysis is described in regulatory documents as a means to effectively remove the drug and its active metabolite.

The official regulatory profile, largely derived from FDA and EMA documentation, is structured to emphasize the necessity of urgent medical response when severe symptoms or excessive ingestion occurs. This guidance directs patients to recognize the initial skin rash as a critical trigger for immediate intervention and supportive care.

Therapeutic Uses of No-Uric

What No-Uric treats: main uses and benefits

No-Uric is intended for the management of symptoms associated with chronic hyperuricemia (elevated uric acid levels). The medication supports patients by addressing the clinical manifestations of this condition. Its primary uses center on reducing the frequency and severity of gout attacks, a painful condition characterized by sudden joint discomfort, swelling, and tenderness. It also plays a role in the long-term symptomatic management of tophaceous gout, a form where uric acid crystals accumulate in the soft tissues.

Relief for Joint Discomfort

The therapeutic approach focuses on assisting in the control of the condition's progression to help maintain a patient's quality of life. The established role of this treatment is focused on its proper application across various populations to support long-term management protocols for this class of medication.

Regulatory References

  1. NIH MedlinePlus on Gout Management

Eligibility and Restrictions for Use

Eligibility Map: Who Can and Cannot Use No-Uric (Allopurinol) — Official Regulatory Information

Eligibility Scope

Populations for whom use is allowed (as stated in label): Adults requiring management of symptomatic primary or secondary hyperuricemia, including gout and hyperuricemia due to malignancy.
Populations for whom use is not recommended (if applicable): Patients with asymptomatic hyperuricemia; the general pediatric population for routine gout management.
Populations for whom use is contraindicated: Individuals with a known history of hypersensitivity to allopurinol or any excipient, or a prior severe cutaneous adverse reaction (e.g., SJS/TEN).

Age- and Condition-Specific Eligibility

Age-related eligibility rules: Use is established in adults. Pediatric use is generally not recommended, restricted to specific conditions like secondary hyperuricemia from malignancy. Older adults may require special caution due to reduced renal function.
Condition-specific eligibility rules: Use is restricted in patients with impaired renal or hepatic function, necessitating cautious monitoring and reduced doses.
Pregnancy and lactation eligibility status: Not usually recommended in pregnancy due to limited human data. Breastfeeding is not recommended as the drug and its metabolite are excreted into human milk.
Eligibility-related restrictions: Patients of Han Chinese, Thai, or Korean descent should be considered for HLA-B^star5801 screening, as its presence may indicate a higher risk of severe hypersensitivity, often leading to restricted use.

Eligibility Classifications (High-Level)

Eligibility severity classification: Contraindicated (Absolute Prohibition); Not Recommended (Strong Restriction); Restricted Use (Conditional Use); Established Use (Permitted).
Regulatory basis: EMA Summary of Product Characteristics (SmPC); FDA Prescribing Information; national health authority guidances.
Eligibility-context constraints: Must not be used in cases of known prior severe reaction; must not be used for asymptomatic hyperuricemia.

Resulting Eligibility Structure

Official eligibility statements:

  • Contraindication: Allopurinol is contraindicated in patients with prior hypersensitivity or history of severe cutaneous adverse reactions.
  • Restriction: Use in patients with impaired renal or hepatic function requires dose reduction and special caution.
  • Age-Restriction: Use for the general management of gout is not recommended in children.
  • Conditional Use: Use during pregnancy must be based on a formal assessment that potential benefits justify the risks.

Connection to the overall eligibility profile (2–4 sentences): Official regulatory documents define who can and cannot use this medicine by establishing non-negotiable contraindications based on prior severe reactions, making that population strictly ineligible. Eligibility for the remaining populations is conditional, with specific restrictions applied to age groups (children), reproductive status, and organ function (renal/hepatic impairment). This regulatory structure limits the medicine's use to adults with symptomatic hyperuricemia who do not have a history of adverse reactions and whose organ function can accommodate the treatment.

What should I know about interactions with other medicines?

No-Uric (Allopurinol) has officially documented interaction patterns primarily stemming from its action as a Xanthine Oxidase Inhibitor, as stated in regulatory prescribing information. Pegloticase is classified as a contraindicated combination and Allopurinol therapy must not be instituted or continued during treatment with this agent.

The metabolism of certain cytotoxic drugs, specifically Mercaptopurine and Azathioprine, is blocked by No-Uric, leading to increased plasma exposure of the cytotoxic agent. Regulatory labeling mandates a significant dose reduction of these agents when co-administered to prevent toxicity. Other medicines also show exposure changes: co-administration with Didanosine may double its plasma concentration.

The risk of severe Allopurinol-related toxicity, including hypersensitivity reactions, is increased when combined with Thiazide Diuretics, especially in patients with chronic renal impairment. Furthermore, certain uricosuric agents and large doses of Salicylates may accelerate the renal clearance of No-Uric’s active metabolite, Oxipurinol, potentially reducing its overall therapeutic effect. A timing constraint exists for Aluminium Hydroxide (antacids), which should be separated by 3 hours to avoid decreased absorption of No-Uric.

Mechanism of Action

How No-Uric Works

The mechanism of No-Uric (Allopurinol) is defined by its targeted intervention in the body's internal processing of purine bases, primarily to produce sustained reduction in circulating urate levels.

Direct Blockade of Uric Acid Production

The primary mechanism involves the inhibition of the Xanthine Oxidase (XO) enzyme by the parent drug and its active metabolite, Oxypurinol. This dual action establishes a continuous block on the metabolic pathway that converts precursor molecules (hypoxanthine and xanthine) into uric acid. This molecular action fundamentally modulates the purine catabolism pathway, leading directly to the key physiological effect of hypouricemia (lowered serum urate concentration).


Metabolic Redirection and Feedback Modulation

The enzymatic blockade shifts the catabolic output away from uric acid, causing the intermediate precursors—which are more soluble—to accumulate and be efficiently excreted by the kidneys. Furthermore, the drug engages a negative feedback mechanism that acts on Amidophosphoribosyltransferase to suppress the rate of de novo purine biosynthesis. This secondary pathway modulation supports the primary mechanism by modulating the total metabolic load, thereby contributing to the long-term maintenance of reduced urate concentration.


Mechanistic Scope and Constraint

The drug's mechanism is strictly limited to metabolic control; it does not engage or suppress any pathways associated with nociception or inflammation. This functional constraint means the mechanism establishes a substantial reduction in the production of urate, but does not modulate pathways associated with acute inflammation, which reflects a constraint inherent to its mechanistic scope.

Dosage and Administration Information

How to Use No-Uric

No-Uric (Allopurinol) is primarily administered via the oral route as a tablet for chronic management, although an intravenous (IV) formulation is approved for certain acute clinical contexts. The usage protocol is characterized by titration, which means the daily quantity is adjusted over time until a specific serum urate level is achieved and maintained.

The typical starting dose for adults is 100 mg once daily. This amount is gradually increased, often in 100 mg increments at weekly intervals, until the required maintenance level is reached, generally falling within a 200 mg to 600 mg daily range. The oral dose should not typically exceed 800 mg per day.


Administration Requirements

Requirement General Administration Guidelines
Timing and Food Oral tablets should be taken after meals or with food to improve gastrointestinal tolerance.
Frequency Doses up to 300 mg are typically taken once daily. Doses exceeding 300 mg should be administered as divided doses to enhance tolerance.
Duration Treatment is generally continuous and long-term for the management of chronic hyperuricemia.
Special Condition Patients must maintain adequate fluid intake daily to help support kidney function.

Population-Specific Adjustments

Established protocols mandate significant dose reduction for patients with impaired kidney function; a lower initial dose and reduced maintenance doses or extended dosing intervals are required based on the degree of renal impairment. Similarly, older adults are advised a lower starting dose and gradual titration due to the likelihood of reduced renal capacity.

Recent Clinical Evidence

Research Evidence / Overview of Studies for No-Uric

This section provides a summary of the scientific studies that have looked at No-Uric. The information describes the structure of the research and the general patterns observed in the studies. Study findings describe group patterns, not personal outcomes.

Evidence for use in Chronic Management of High Uric Acid Levels

Research exploring the use of No-Uric for managing high uric acid levels (a condition characterized by fluctuating or episodic manifestations like gout) has included various designs. Research involving short-term Randomized Controlled Trials (RCTs) contribute primary information to the evidence base. In these RCTs, No-Uric was studied to observe whether changes in the measured levels of uric acid were observed over defined time intervals, typically six months or a year.

Researchers examined specific outcomes related to systemic or functional imbalance, primarily the change in serum uric acid (sUA) concentrations. Studies reported measurements of sUA levels and described the patterns regarding the proportion of participants whose sUA reached a predetermined target level, such as below 6 mg/dL. Studies also explored outcomes describing episodic or acute changes, such as the number of gout flare-ups reported. Findings describe patterns observed in these studied populations.

Long-Term Studies and Extended Follow-up

Researchers have conducted open-label extension studies and observational studies where participants were observed for longer periods, often several years. These studies monitored patterns related to the evolution of symptoms in the observed populations during the long-term follow-up.

Despite these extended observations, long-term effects are not fully established by prospective, randomized trials. Data are still emerging for extended outcomes, and there is limited information for long-term outcomes regarding the stability of the observed responses over many years.

What is Still Uncertain About No-Uric Research

This concluding section synthesizes the main evidence gaps and areas where more research is needed:

  1. Long-term effects are not fully established or well-characterized by comprehensive, long-running randomized trials.
  2. Data for certain specialized patient groups (such as those with more severe concurrent diseases) remain insufficient.
  3. Comparative evidence is lacking for many important long-term outcomes.
  4. Certainty remains low for aspects of the treatment that are not directly related to the change in the uric acid biomarker.

Key Studies & References

  1. ACR Guideline for the Management of Gout: Part 1. Systematic Review and Gout-Specific-Recommendations
  2. Systematic Review of Randomized Controlled Trials Comparing Urate Lowering Therapies in Gout

Frequently Asked Questions (FAQ)

Common questions about No-Uric (FAQ)


Q: How quickly can someone expect to see a change after starting No-Uric?

A: According to official product information, the primary action of No-Uric is to reduce the production of uric acid. This hypouricemic action, which is the systemic reduction in uric acid levels, generally begins within two to three days of starting treatment.


Q: What happens if a dose of No-Uric is missed?

A: If a dose is missed, regulatory patient information describes taking the dose as soon as it is remembered. Regulatory patient information describes that the next dose should then be taken at the usual scheduled time. Official guidance notes that a double dose is not to be taken to make up for the missed one.


Q: Is No-Uric appropriate for women who are pregnant or planning to become pregnant?

A: Use of No-Uric during pregnancy is generally not recommended due to limited and inconclusive data from human studies. Official sources advise that the decision to use the medicine must be based on a formal assessment that the potential benefit justifies the risks. Official documentation implies consultation is necessary for individuals planning pregnancy due to the conditional use status.


Q: Is it normal to feel a flare-up when first starting No-Uric?

A: Yes, official documents describe that acute gout attacks, often called flare-ups, are a common event, particularly at the start of No-Uric treatment. This is a documented occurrence even as the medicine begins to lower systemic uric acid levels.


Q: What general expectations about treatment success are described in clinical trials?

A: The main goal of treatment, as described in clinical trials, is the sustained control of uric acid. Success is measured by the ability to achieve and maintain a target serum uric acid (sUA) level, typically below 6 mg/dL. This concentration is believed to help promote the dissolution of urate crystals.


Q: What should be done if an accidental overdose of No-Uric occurs?

A: Official patient safety information instructs immediate seeking of emergency medical attention if an overdose is suspected or has occurred. It also advises contacting a Poison Control center for guidance.


Q: Is No-Uric a type of pain reliever?

A: No-Uric is a Xanthine Oxidase Inhibitor, a class of medicine that is approved to reduce the production of uric acid. Its approved mechanism of action is strictly for metabolic control. According to official documents, it does not include the suppression of inflammation or pain, and is therefore not classified as a pain reliever.


Q: Can No-Uric affect sleep?

A: Official product information notes that No-Uric may cause side effects such as drowsiness or dizziness in some individuals. Caution is advised when engaging in activities that require alertness until the individual is aware of the medicine's effect.


Q: Is No-Uric meant to be a permanent treatment?

A: For managing chronic conditions, treatment with No-Uric is generally described as continuous and long-term. Official sources indicate that discontinuing therapy has been reported in clinical contexts to lead to a high rate of recurrence of the underlying condition.


Q: Does drinking alcohol affect how No-Uric works?

A: Official patient resources state that alcohol does not directly change the way No-Uric works in the body. However, official information indicates that consuming alcohol may contribute to increased uric acid levels in the blood.


Q: Are there any age restrictions for taking No-Uric?

A: The medicine is established as a treatment for adults. Official guidance notes that its use is generally not recommended for children for the routine management of gout. Pediatric use is restricted to specific conditions like secondary hyperuricemia caused by malignancy.


Q: Does No-Uric have a generic version available?

A: Yes. No-Uric, whose active ingredient is Allopurinol, is available in both brand-name and generic forms.


Q: Is No-Uric known to cause skin reactions?

A: Yes, skin reactions, including a rash, are documented in official safety information as a common side effect. Rare but serious reactions, such as Stevens-Johnson syndrome, are also documented.


Q: Can No-Uric be used for conditions other than high uric acid?

A: The approved uses listed in official regulatory documents include the chronic management of hyperuricemia related to gout. It is also approved for the prevention of hyperuricemia caused by chemotherapy and the management of uric acid nephropathy.


Q: What happens to the body when No-Uric starts working?

A: No-Uric starts working by preventing the final production of uric acid in the body through enzyme inhibition. This action reduces the overall concentration of uric acid in the bloodstream, which is intended to prevent its excessive accumulation in tissues.


Q: Are there any known food or drink items that reduce the effectiveness of No-Uric?

A: Official regulatory documents note that the absorption of No-Uric can be decreased if it is taken at the same time as the antacid, Aluminium Hydroxide. The label for co-administration with Aluminium Hydroxide specifies a required separation of at least three hours.


Q: Is No-Uric a prophylactic (preventative) or an acute treatment?

A: No-Uric is officially indicated for the chronic management of hyperuricemia and is classified as a preventative type of treatment. It is not intended for the treatment of an acute gout attack or flare-up.


Q: What are the warnings about No-Uric for patients with severe illness?

A: Regulatory warnings require special caution and dosage adjustment for patients with pre-existing conditions affecting organ function. This is particularly true for individuals with impaired renal (kidney) or hepatic (liver) function.


Q: Does No-Uric affect fertility?

A: Based on current evidence documented in official patient information, there is no indication that No-Uric reduces fertility in either men or women.


Q: Are people with a history of kidney stones typically eligible for No-Uric?

A: Yes. Official indications for No-Uric include its use in individuals with recurrent calcium oxalate kidney stones that are associated with hyperuricosuria, which is an excess of uric acid in the urine.


Q: Does No-Uric have any known black box warnings?

A: According to the U.S. FDA Prescribing Information, No-Uric (Allopurinol) does not carry a black box warning, which represents the strongest type of warning a medicine can have.


Q: Is it described as being metabolized by the liver?

A: Yes, regulatory documents describe that No-Uric is rapidly processed by the liver. It is converted into its main active form, Oxypurinol, which is responsible for the prolonged action of the medicine.


Q: Can No-Uric cause anemia?

A: Official safety documents list disorders of the blood and lymphatic system as possible adverse reactions. These include a rare occurrence of specific conditions such as aplastic anemia and hemolytic anemia (types of blood dyscrasia).


Q: Why is it described as an enzyme inhibitor?

A: It is described as a Xanthine Oxidase Inhibitor because it works by blocking (inhibiting) the action of a specific enzyme in the body called Xanthine Oxidase. This enzyme is the target of the medicine's action.

How should No-Uric be stored and disposed of?

Storage and Disposal Requirements for No-Uric (Allopurinol)

The official labeling for No-Uric (allopurinol) tablets specifies stringent storage and disposal guidelines to maintain medication quality and household safety.


Storage Conditions

No-Uric must be stored at Controlled Room Temperature, which is defined as 20 C to 25 C (68 F to 77 F). The medication must be protected from both moisture and excessive heat. For integrity, the tablets must remain in the original container, which should be kept tightly closed. Crucially, the product must be stored out of the reach of children.


Disposal Instructions

Unused or expired No-Uric should not be flushed down a toilet or sink. Disposal must follow a drug take-back program (e.g., pharmacy or police station drop-offs). If a take-back program is unavailable, the tablets may be mixed with an unappealing substance, sealed in a bag, and then placed in the household trash, following official guidance.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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