Tempo Chewable Tablets

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Tempo Chewable Tablets

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Medically reviewed

Rosario Oropesa

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 Tempo Chewable Tablets

What is Tempo Chewable Tablets?

Tempo Chewable Tablets is an antacid medication formulated to provide relief from symptoms associated with gastric hyperacidity. It is primarily composed of calcium carbonate, a chemical compound that works by neutralizing existing acid in the stomach.

Composition and Mechanism

The active ingredient, calcium carbonate, reacts chemically with the hydrochloric acid secreted by the stomach. This neutralization process results in the formation of water, carbon dioxide, and calcium chloride, which helps to increase the pH level of the stomach contents. By reducing the overall acidity, the medication helps alleviate the discomfort caused by excess acid production.

Clinical Applications

This medication is typically used for the symptomatic management of digestive conditions characterized by high acid levels. These conditions include:

  • Acid Indigestion: General discomfort or a burning sensation in the upper abdomen.
  • Heartburn: A painful, burning feeling in the chest or throat that occurs when stomach acid backs up into the esophagus.
  • Sour Stomach: A condition often associated with an acidic taste in the mouth and general gastric distress.

Physical Characteristics

Tempo is produced as a chewable tablet, a dosage form designed to be broken down mechanically in the mouth before swallowing. This delivery method allows the active ingredients to begin neutralizing stomach acid quickly upon reaching the gastric environment.

Regulatory References

  1. MedlinePlus Simethicone Info

What side effects are possible with Tempo Chewable Tablets?

Possible side effects and safety information

Tempo Chewable Tablets, containing aluminum hydroxide, magnesium hydroxide, and simethicone, primarily impacts the Gastrointestinal system, which represents the most common class of adverse reactions documented in official regulatory labeling. These common effects are directly related to the action of the antacid components.

Officially Documented Adverse Reactions

Category Common Effects Systemic Safety Concerns
Gastrointestinal Diarrhea, Constipation, Nausea, Vomiting Intestinal obstruction/Ileus (risk in high-risk patients)
Metabolism & Nutrition Not applicable Hypophosphatemia (Phosphate depletion), Hypermagnesemia (Elevated Magnesium levels)

Diarrhea is typically associated with the magnesium component, while constipation is linked to the aluminum component. These effects are generally classified as Common within regulatory frequency frameworks.

Population-Specific and Duration Safety

Official regulatory documents emphasize specific constraints regarding the duration of use and patient health status. The most critical safety limitation is a Contraindication in severe renal impairment or kidney failure. This is due to the presence of magnesium, which can lead to Hypermagnesemia (excessive magnesium levels) when kidney function is compromised, increasing the risk for systemic toxicity.

Furthermore, the long-term or prolonged use of this medication is associated with the risk of Hypophosphatemia. This risk is particularly noted in patients who may already be on a low-phosphorus diet. The official safety profile also notes that antacids can affect the absorption profile of other medicines by altering the stomach’s acidity.

Overdose and Emergency Response

Overdose and When to Seek Help

Tempo Chewable Tablets contain aluminum hydroxide and magnesium hydroxide. Overdoses are associated with systemic conditions primarily related to the accumulation of these minerals. Ingesting more than the recommended amount or chronic overuse can lead to toxicity.

Documented Overdose Presentations and Risks

Overdose Domain Manifestations
Mineral Accumulation Hypermagnesemia (excess magnesium) and Hyperaluminemia (excess aluminum).
Early Symptoms Loss of appetite, nausea, vomiting, muscle weakness, and slow reflexes.
Severe Symptoms Changes in mental state, confusion, and seizures (convulsions).
Specific Risk Individuals with impaired kidney function may have a higher risk of accumulation.

Emergency Actions

The regulatory guidance emphasizes that the primary risk from overdose is the potential for systemic toxicity due to mineral overload. The development of severe clinical signs like confusion or seizure indicates a serious medical event.

Immediate medical help is required if an overdose is suspected. Contact a poison control center (e.g., 1-800-222-1222) or an emergency room immediately for medical advice and treatment, regardless of whether symptoms have appeared.

Therapeutic Uses of Tempo Chewable Tablets

Tempo Chewable Tablets are indicated for the relief of digestive discomfort stemming from excess stomach acid and gas. The medication is used to manage symptoms such as heartburn, acid indigestion, and sour stomach. A key benefit is its action as an antacid to neutralize stomach acid, providing temporary relief from the associated burning sensation.


Additionally, some formulations of Tempo Chewable Tablets may contain an anti-gas component to help alleviate symptoms of bloating, pressure, or the stuffed feeling commonly referred to as gas. The chewable formulation allows for convenient and rapid delivery of the active ingredients to the gastrointestinal tract for prompt symptom management. This form of therapy addresses the temporary irritation caused by over-acidification of the stomach contents.


Quick Facts

  • Relieves: Heartburn, sour stomach, acid indigestion.
  • Manages: Upset stomach associated with these symptoms.
  • Addresses: Bloating, pressure, or stuffed feeling (gas).
  • Therapeutic Action: Antacid and anti-gas.

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Tempo Chewable Tablets

The eligibility profile for Tempo Chewable Tablets is strictly defined by regulatory documents, focusing on patient age and underlying health conditions, particularly renal function.

Eligibility Scope

Classification Eligible Population Non-Eligible Population (Contraindicated)
Age Groups Adults and Children 12 years of age and older Children under 12 years of age (use not recommended without physician direction)
Renal Status Individuals with healthy kidney function Patients with severe renal insufficiency or kidney failure

Contraindications and Restrictions

Use of this medicine is absolutely contraindicated in patients with a known hypersensitivity to Aluminum Hydroxide, Magnesium Hydroxide, or Simethicone. It is also prohibited for patients with severe kidney disease due to the high risk of accumulation of the metallic salts, which can lead to toxicity.

Furthermore, the medicine is contraindicated for those with hypophosphataemia or suspected acute gastrointestinal conditions like bowel obstruction. Use during pregnancy should be restricted to situations only if clearly needed; however, it is generally considered compatible with breastfeeding due to minimal systemic absorption.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Tempo Chewable Tablets, an Antacid/Antiflatulent combination, primarily causes documented interactions via a pharmacokinetic mechanism that alters the systemic exposure of co-administered oral medications. The Aluminum and Magnesium Hydroxide components can change gastric pH and bind to other drugs, which typically decreases their absorption.

Mandatory Timing Separation

Regulatory documents mandate a timing separation rule to mitigate reduced absorption for numerous oral medicines. The antacid must generally not be taken within 2 hours before or 2 hours after administration of drugs such as certain antibiotics (e.g., Quinolones, Cephalosporins), cardiovascular agents (e.g., Digoxin), Bisphosphonates, and Corticosteroids.

Contraindicated Combinations and Exposure Effects

Interaction Type Interacting Substance/Class Official Documented Effect
Contraindicated Citrate Salts (in supplements/foods) Increased systemic absorption of Aluminum, leading to toxicity risk.
Increased Exposure Quinidine, Warfarin, Sulfonylureas Increased action and risk of side effects of the co-administered drug.

Population-Specific Cautions

Official labeling documents emphasize that patients with renal dysfunction are at an increased risk of interaction-related complications. Impaired kidney function prevents the effective clearance of metallic ions, increasing the risk of hypermagnesemia and hyperaluminemia from the product’s components.

Mechanism of Action

How Tempo Chewable Tablets Works

The drug's function is centered on two primary and local physicochemical domains that operate entirely within the gastrointestinal tract to modulate the activity of free hydrogen ions and the physical state of intraluminal gas.


Modulating Gastric pH Through Chemical Neutralization

This domain focuses on the Aluminum Hydroxide and Magnesium Hydroxide components, which act as bases to directly target and neutralize free Hydrogen Ions ( H^+) in the stomach. This chemical neutralization cascade immediately raises the local pH (making it less acidic), resulting in a reduction of the concentration of free hydrogen ions in the gastric fluid. This is a non-systemic, buffering mechanism that modulates the existing acidic environment.


Physical Dynamics: Altering Intraluminal Gas Surface Tension

This domain describes the action of Simethicone, which does not engage biological targets but rather alters the physical surface tension of gas/liquid interfaces in the gut. By acting as a defoaming agent, it causes small, trapped gas bubbles to coalesce into larger gas pockets. This physical change alters the gas bubble configuration, which promotes the passive movement and expulsion of the gas pockets from the lumen.

Dosage and Administration Information

How to Use Tempo Chewable Tablets

Tempo Chewable Tablets are administered orally and must be used strictly according to the official instructions for use. Following the correct procedure is essential to ensure the medicine is properly delivered and absorbed.


Procedural Instructions and Dosing

Administration Element Official Requirement
Route and Method The tablet must be chewed completely before swallowing. Do not swallow the tablet whole.
Liquid Intake For best results, follow the dose by drinking a glass of water or other liquid.
Dosing Schedule Adults and children 12 years and over: The maximum dosage is typically two tablets in a 24-hour period. Children under 12 years should only use the product if directed by a doctor.
Duration Constraint Do not use the maximum daily dosage for longer than two weeks continuously without consulting a physician.

Timing and Missed Doses

Administration may be done with or without food and should be taken as directed by a healthcare provider.

  • Drug Separation: Do not take this product within two hours before or after taking certain other medications by mouth, as it may interfere with the action of those medicines (e.g., beta-blockers, bisphosphonates, cephalosporins, or digoxin).
  • Missed Dose: If taking the drug regularly and a dose is missed, take it as soon as it is remembered. If it is almost time for the next scheduled dose, skip the missed dose and continue with the regular schedule. Do not take two doses at once.

Recent Clinical Evidence

Research evidence / Overview of studies for Tempo Chewable Tablets


The Foundation of Evidence: Regulatory Review and Clinical Studies

The available research for Tempo Chewable Tablets is based on the long history and established use of its active components: antacids and an antiflatulent. This combination of ingredients is supported by a long history of clinical investigation and a governmental review process. The core antacid components are classified under the U.S. Food and Drug Administration's (FDA) Over-the-Counter (OTC) Monograph system, which means they are recognized by regulators for their intended uses, based on substantial scientific evidence and historical experience. This regulatory status stems from a systematic review of foundational controlled clinical studies that explored the components both individually and in combination. The research describes the characteristics of these ingredients when applied in studies examining patient-reported experiences of acute digestive upset.


Evidence for Symptomatic Relief of Acid Indigestion and Heartburn

Research was conducted in studies focusing on episodes where symptoms become more noticeable, exploring how symptoms related to acid indigestion, sour stomach, and heartburn change over short time intervals. These studies included populations of adults and older children who were experiencing common, transient digestive discomfort.

The research examined several outcomes related to physical discomfort, including the measurement of symptom intensity or variability and the time to onset of symptomatic change. The findings described patterns observed in the studies related to the change in stomach acid neutralization following administration of the antacids, which was a core physiological outcome observed in research exploring changes associated with acid-related discomfort.

Research on Gas and Bloating Discomfort

Specific studies were observed in research exploring the action of the antiflatulent component, simethicone, focusing on outcomes related to physical discomfort caused by trapped gas. This research examined outcomes related to systemic or functional imbalance associated with gas, such as feelings of abdominal pressure or bloating.

These studies monitored patient-reported outcomes describing perceived discomfort in the gastrointestinal tract. The findings describe patterns observed in the studies where the agent was associated with the physical breakdown of gas bubbles. The evidence contributes to the broader evidence landscape by providing context on outcomes measured related to gas-related symptoms when associated with acid indigestion.


Long-Term Data and Duration of Observation

The studies that form the foundation for this OTC medication are primarily focused on research exploring short-term symptom changes and acute symptom patterns, consistent with the product's classification. Consequently, the follow-up durations were limited, with trials focusing on usage up to 14 days as a standard for self-treatment products.

Long-term effects are not fully established and there is limited information that characterizes the outcomes or sustained symptom patterns when use is continuous or repeated beyond the short-term labeling. The existing evidence provides context regarding temporary use, but the data are still emerging regarding outcomes from chronic or extended-duration use.


Research in Specific Patient Groups

The foundational research primarily examined populations of adults and older children (typically those 12 years and older) experiencing common, acute episodes of digestive upset. Data for certain groups remain insufficient. For instance, evidence is limited regarding use in populations outside the approved age range, individuals with pre-existing kidney conditions, or those with complex conditions characterized by fluctuating or episodic manifestations tied to long-term health issues.

The results apply only to the populations studied in the relevant regulatory trials. The research does not provide extensive data on how individuals with certain comorbidities were addressed in the research.


Key Limitations and Areas of Uncertainty

The research provides a necessary foundation for acute, short-term use, but it does carry structural limitations. Since the research is relevant in trials assessing short-term or episodic symptom patterns, the evidence base does not address the long-term effects of chronic use. Follow-up durations were limited, and the evidence is not designed to explore treatment of underlying disease.

Sample sizes were modest in some of the foundational studies. The findings describe group patterns, not personal outcomes, and the research provides context but not individual predictions. The evidence highlights what is known—and what is still uncertain—regarding use beyond the 14-day limit or in special populations not included in the primary studies.

Frequently Asked Questions (FAQ)

Common questions about Tempo Chewable Tablets (FAQ)


Q: How is Tempo Chewable Tablets different from other medicines that treat the same condition?

Official product information describes Tempo Chewable Tablets as a combination drug that contains three different active components. These components include two antacids, Aluminum Hydroxide and Magnesium Hydroxide, for acid neutralization, and Simethicone for gas relief. This unique composition allows the medicine to simultaneously address both acid-related discomfort and gas-related pain.


Q: How long does it usually take for the effects of Tempo Chewable Tablets to start?

The antacid components in this medication work through a direct chemical process called neutralization, which is intended to reduce stomach acidity. Antacids that work by chemical neutralization are designed to begin working quickly or rapidly upon reaching the stomach acid, consistent with their function for fast, symptomatic relief.


Q: Does chewing the tablet change how fast it works?

Regulatory documents specify that the tablet must be chewed completely before swallowing. This method of administration is necessary because it facilitates the rapid disintegration and intended release of the active ingredients. This action allows the components to mix immediately with stomach contents, initiating the neutralization process quickly.


Q: Is it normal to feel a change in taste after taking a Tempo tablet?

Antacid medications containing metallic salts, such as the Aluminum and Magnesium components in Tempo Chewable Tablets, are sometimes associated with a chalky or altered taste. This taste change is sometimes associated with the metallic components in the formulation.


Q: What is the most common side effect reported by patients using Tempo?

The officially documented side effects most frequently reported by patients involve the gastrointestinal system. Specifically, these common effects include diarrhea, often linked to the magnesium component, and constipation, which is often linked to the aluminum component. These effects are typically classified as common within regulatory safety documents.


Q: Has there been research on using Tempo Chewable Tablets in older adults?

Foundational research primarily focused on general adult populations. However, official documents sometimes provide cautions that older adults may be at a higher risk of complications from drug interactions or systemic side effects due to a greater likelihood of underlying kidney issues.


Q: Do I need a prescription to get Tempo Chewable Tablets?

Tempo Chewable Tablets is classified by regulatory agencies as a non-prescription (Over-the-Counter or OTC) medication. It is intended for self-treatment of common, acute digestive discomforts like heartburn and gas.


Q: Can Tempo Chewable Tablets cause drowsiness or affect driving?

The active ingredients in this combination product are not typically associated with causing sedation. However, the label may note that certain systemic effects, such as drowsiness, are typically not common when the product is used as directed.


Q: What if the tablet is crushed instead of chewed, does it still work?

Official administration instructions often advise that the tablet should be chewed or crushed completely before swallowing. The primary goal of chewing is to allow the tablet to break down quickly and release the active ingredients, which is generally achieved by either crushing or chewing.


Q: Does the color or shape of the tablet mean anything?

Official drug descriptions document the specific color, shape, and any markings on the tablet for quality control purposes. These physical characteristics are used by manufacturers and pharmacists to help identify the correct product and strength but do not influence how the medicine works in the body.


Q: Do other ingredients in the tablet (like fillers) have any effect?

Official labeling lists inactive ingredients (such as binders, colorings, and flavorings) which are present to stabilize the tablet or improve its taste. While they do not provide a therapeutic benefit, inactive ingredients can sometimes be a source of a hypersensitivity reaction for sensitive individuals.


Q: How can I tell the difference between a minor side effect and something serious?

Official documents describe that symptoms of a serious condition, such as trouble swallowing, persistent abdominal pain, or signs of a severe allergic reaction (e.g., hives or facial swelling), are noted as circumstances where professional medical help should be sought. Minor effects are typically mild and transient gastrointestinal upsets like diarrhea or constipation.


Q: Does the effectiveness of Tempo change over time while using it?

Regulatory documents state that use of the maximum recommended daily dosage for longer than two weeks continuously is not recommended without consultation. This constraint is in place because continuous use beyond the acute period may be associated with reduced efficacy or may mask symptoms of a more serious underlying condition.


Q: Are there any common over-the-counter supplements that should be avoided with Tempo?

Official labeling specifically mandates avoiding supplements or fortified foods containing Citrate Salts. This combination can lead to an increased absorption of the aluminum component of the antacid, which could potentially result in toxicity, especially for patients with impaired kidney function.


Q: How does Tempo Chewable Tablets interact with alcohol?

Official patient education notes sometimes discuss that avoiding or limiting alcohol may be helpful because alcohol can irritate the stomach lining and stimulate acid production, potentially worsening the underlying symptoms that the antacid is used for.


Q: Is it possible to take Tempo if I am already taking an antidepressant?

Antidepressants are a diverse group of medicines. For this and other co-administered oral medications, regulatory documents recommend separating the antacid dose by two hours before or after the other drug. This spacing helps to minimize the risk of the antacid decreasing the absorption of the co-administered medicine.


Q: Can Tempo Chewable Tablets affect the results of common blood tests?

In cases of prolonged use or in patients with impaired kidney function, the antacid components can cause changes in magnesium, aluminum, or phosphate levels in the body. These changes in electrolyte levels are typically monitored via blood tests.


Q: Does taking Tempo with food make it absorb faster or slower?

The medication may be taken with or without food, as directed. Some patient information suggests that taking antacids after meals may provide a more sustained effect. The medicine’s primary action is local, within the digestive tract, and is therefore not significantly dependent on systemic absorption timing.


Q: Do official documents mention the use of Tempo in pregnant or breastfeeding patients?

Official labeling documents state that use during pregnancy should be restricted to situations only if clearly needed. However, the medicine is generally considered compatible with breastfeeding due to its minimal systemic absorption.


Q: Can people with heart conditions safely use Tempo?

Regulatory documents recommend that patients with certain conditions, such as heart failure or those on a low-sodium diet, should consult a healthcare provider before using antacids regularly. This caution is related to the potential sodium and electrolyte content that is often present in antacid formulations.


Q: How is the safety of Tempo Chewable Tablets monitored after it's been approved?

Safety is continuously monitored through a process called post-marketing surveillance. Regulatory agencies collect and review reports of adverse events and safety concerns submitted by both patients and healthcare providers to ensure the ongoing safety profile of the medication is maintained.


Q: Is it okay to use Tempo if I am diabetic (due to the chewable form)?

The active ingredients are generally not prohibited for diabetic patients. However, because chewable medicines often contain sugars or artificial sweeteners to improve taste, individuals monitoring their glucose intake should consider these inactive ingredients.


Q: If I am taking an herbal supplement for sleep, is it safe to take Tempo?

Official labeling advises patients to disclose all medications, herbs, non-prescription drugs, or dietary supplements to a healthcare provider. The main concern is that the antacid could decrease the absorption of many other orally administered products by altering the stomach's environment.


Q: What should I do if a child accidentally chews a Tempo tablet?

Official documents explicitly warn that the medicine must be kept out of the reach and sight of children and pets. In the event of accidental ingestion, official guidance directs people to seek professional medical help or contact a Poison Control Center.


Q: Is the information about Tempo the same across all countries?

The active ingredients in the product are consistent globally. However, the specific product formulation, brand name, warnings, dosage, and non-active ingredients may vary depending on the specific national regulatory agency in each country.


Q: Does Tempo Chewable Tablets interact with caffeine?

Official patient education often advises patients to limit or avoid caffeine consumption. This is because caffeine is a known trigger that can stimulate stomach acid production, which may counteract the intended acid-neutralizing effect of the antacid.


Q: Does chewing the tablet fully release the active ingredient?

The instruction to chew completely is given to facilitate the full and immediate release of the active ingredients. This release is necessary for the rapid mixing with stomach contents and the prompt start of the neutralization process.

How should Tempo Chewable Tablets be stored and disposed of?

How to Store and Dispose of Tempo Chewable Tablets

Tempo Chewable Tablets must be stored under specific conditions to maintain their quality, as documented in regulatory labeling. The product requires storage at Controlled Room Temperature, defined as 59 F to 86 F (15 C to 30 C). The tablets must be kept in their original, tightly closed container and protected from excessive moisture, heat, and light. It is mandatory to keep the medicine out of the reach and sight of children and pets.

Disposal Requirements

Expired or unused tablets should preferably be disposed of through a drug take-back program. If this is unavailable, the product must be mixed with an undesirable substance (e.g., used coffee grounds) and placed into a sealed container before being thrown into the household trash. Do not dispose of this medication by flushing it down a toilet or pouring it down a drain.

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

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