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Famotidine/Calcium carbonate/Magnesium hydroxide

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Active ingredients
  • Famotidine 10 mg
  • Calcium Carbonate 800 mg
  • Magnesium Hydroxide 165 mg
Reference brand
Pepcid Complete
Drug classes
Calculi Dissolution Agent, Histamine-2 Receptor Antagonist, Osmotic Laxative
Dosage form
Tablet, Chewable
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2008
Label revision date
March 12, 2026
Pregnancy
See Pregnancy Use Section
Lactation
See Lactation Use Section
Active ingredients
  • Famotidine 10 mg
  • Calcium Carbonate 800 mg
  • Magnesium Hydroxide 165 mg
Reference brand
Pepcid Complete
Drug classes
Calculi Dissolution Agent, Histamine-2 Receptor Antagonist, Osmotic Laxative
Dosage form
Tablet, Chewable
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 2008
Label revision date
March 12, 2026
Pregnancy
See Pregnancy Use Section
Lactation
See Lactation Use Section
Product Labels (46)
Product Labels (46)

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Drug Overview

Dual Action Complete is a chewable tablet that combines the active ingredients famotidine (10 mg), calcium carbonate (800 mg), and magnesium hydroxide (165 mg) to provide relief from heartburn associated with acid indigestion and sour stomach. This dual-action formulation acts as both an acid reducer and an antacid, helping to alleviate discomfort quickly. You can enjoy it in flavors like berry or mint, and just one tablet is often enough to relieve your symptoms.

This product is designed to be easy to take, making it a convenient option for managing heartburn. It is comparable to other well-known brands, such as Pepcid Complete, and is available in various packaging sizes.

Uses

You can use this medication to relieve heartburn that is associated with acid indigestion and sour stomach. It is effective for managing discomfort caused by these conditions, helping you feel more comfortable after meals or during episodes of heartburn.

Whether you choose a tablet or chewable form, this medication is designed to provide quick relief from the symptoms of heartburn, making it a convenient option for those who experience these issues frequently.

Dosage and Administration

For adults and children aged 12 years and older, take 1 chewable tablet to relieve symptoms, making sure to chew it completely before swallowing. Do not swallow the tablet whole. You should not take more than 2 chewable tablets in a 24-hour period.

If you are under 12 years old, please consult a doctor before using this medication.

What to Avoid

You should avoid using this product if you have difficulty swallowing food, are experiencing vomiting with blood, or have bloody or black stools, as these may indicate a serious medical condition that requires immediate attention from a healthcare professional. Additionally, do not use this product in conjunction with other acid reducers, as this can lead to potential complications. Always consult your doctor if you have any concerns or if symptoms persist.

Side Effects

You should not use this medication if you are allergic to famotidine or other acid reducers. Serious side effects may occur, including difficulty or pain when swallowing, vomiting blood, or having bloody or black stools. These symptoms could indicate a serious condition, and you should see a doctor immediately.

Before using this product, consult your doctor if you have had heartburn for more than three months, experience heartburn with lightheadedness, sweating, or dizziness, or have chest pain, unexplained weight loss, nausea, vomiting, stomach pain, or kidney disease. If your heartburn persists or worsens, or if you need to take this product for more than 14 days, stop using it and seek medical advice.

Warnings and Precautions

  • Do not use this product if you are allergic to famotidine or other acid reducers.

  • Avoid using it if you have trouble swallowing food, are vomiting blood, or have bloody or black stools, as these may indicate a serious condition. Consult your doctor if you experience any of these symptoms.

  • Do not take this product with other acid reducers.

Before using, consult your doctor if you have:

  • Heartburn lasting over 3 months, which may signal a more serious issue.

  • Heartburn accompanied by lightheadedness, sweating, or dizziness.

  • Chest pain or shoulder pain with shortness of breath, sweating, or pain spreading to your arms, neck, or shoulders.

  • Frequent chest pain or wheezing, especially with heartburn.

  • Unexplained weight loss, nausea, vomiting, stomach pain, or kidney disease.

If your heartburn persists or worsens, or if you need to use this product for more than 14 days, stop using it and consult your doctor.

In case of overdose, seek immediate medical help or contact a Poison Control Center at 1-800-222-1222.

Overdose

If you suspect an overdose of any medication, it's crucial to seek medical help immediately or contact a Poison Control Center at 1-800-222-1222. Signs of an overdose can vary but may include unusual drowsiness, confusion, or difficulty breathing.

Always remember that taking more than the recommended dose of medications, such as acid reducers or antacids, can lead to serious health issues. If you or someone else has taken too much, do not wait for symptoms to appear—act quickly to ensure safety.

Pregnancy Use

If you are pregnant or breastfeeding, it is important to consult a healthcare professional before using any of the following medications: Good Neighbor Pharmacy Dual Action Complete, Careone Acid Reducer Complete, Complete, Signature Care Acid Reducer Complete, Basic Care Dual Action Complete, Topcare Dual Action Complete, Up and up Dual Action Acid Reducer and Antacid, Injoy Heartburn Relief, Equate Acid Reducer Complete, Pepcid Complete, and others. This precaution is essential to ensure the safety of both you and your baby, as some ingredients may not be suitable during pregnancy or lactation. Always prioritize your health and seek guidance from a qualified professional.

Lactation Use

If you are pregnant or breastfeeding, it is important to consult a healthcare professional before using any medications, including acid reducers and antacids. This is to ensure that any active ingredients do not adversely affect your health or your baby's health, as some substances can pass into breast milk. Always prioritize safety and seek guidance tailored to your specific situation.

Pediatric Use

For children under 12 years, it is important to ask a doctor before using any of these acid reducer and antacid products. For adults and children aged 12 years and older, the instructions are to chew one tablet completely before swallowing and not to exceed two chewable tablets in a 24-hour period. Always keep these products out of reach of children, and in case of overdose, seek medical help or contact a Poison Control Center immediately.

Geriatric Use

When considering the use of acid reducers and antacids, such as Careone Acid Reducer Complete, Pepcid Complete, and others, it's important to note that there is no specific information provided regarding dosage adjustments, safety concerns, or special precautions for older adults. This means that while these medications may be used, you should consult with your healthcare provider to ensure they are appropriate for your individual health needs.

If you have kidney disease, it is particularly important to speak with your doctor before using Pepcid Complete, as this condition may affect how your body processes the medication. Always prioritize open communication with your healthcare team to ensure safe and effective treatment.

Renal Impairment

If you have kidney disease, it's important to consult with your doctor before using any of the following medications: Good Neighbor Pharmacy Dual Action Complete, Careone Acid Reducer Complete, Pepcid Complete, and many others listed here. These products come in tablet or chewable forms and may require special consideration due to your condition.

While some labels do not provide specific dosage adjustments or monitoring guidelines for kidney impairment, the general recommendation is to seek medical advice prior to use. This ensures your safety and helps manage any potential risks associated with your kidney health.

Hepatic Impairment

You may be interested to know that the various medications listed, including brands like Good Neighbor Pharmacy Dual Action Complete, Careone Acid Reducer Complete, and Pepcid Complete, do not provide specific information regarding liver issues. This means there are no dosage adjustments, special monitoring, or precautions mentioned for individuals with liver problems.

If you have liver impairment, it's always a good idea to consult with your healthcare provider before starting any new medication, even if no specific warnings are provided. Your health and safety should always come first.

Drug Interactions

When using antacids and acid reducers, it's important to know that they may interact with certain prescription medications. This means that taking these products alongside your prescribed drugs could affect how well those medications work or increase the risk of side effects. Always discuss any medications or supplements you are taking with your healthcare provider to ensure your treatment is safe and effective. This is crucial for managing your health and avoiding potential complications.

Storage and Handling

To ensure the effectiveness of your tablets or chewables, store them in a cool, dry place at a temperature between 20-25°C (68-77°F). It's important to protect them from moisture, so keep the container tightly closed and away from humid areas.

Before using, check that the packaging is intact. Do not use the product if the inner seal is broken or missing, or if the pouch is torn or damaged. For safe disposal, follow local guidelines for medication disposal, or consult your pharmacist for advice.

FAQ

What is Dual Action Complete?

Dual Action Complete is a chewable tablet that contains Famotidine 10 mg, Calcium Carbonate 800 mg, and Magnesium Hydroxide 165 mg, designed to relieve heartburn due to acid indigestion.

How should I take Dual Action Complete?

Adults and children 12 years and over should chew 1 tablet completely before swallowing. Do not swallow the tablet whole and do not use more than 2 tablets in 24 hours.

What are the indications for using Dual Action Complete?

It is indicated for relieving heartburn associated with acid indigestion and sour stomach.

Are there any contraindications for Dual Action Complete?

Do not use if you have trouble swallowing food, vomiting with blood, or bloody or black stools, as these may indicate a serious condition. Also, do not use with other acid reducers.

What should I do if my heartburn continues?

If your heartburn continues or worsens, or if you need to take this product for more than 14 days, stop use and consult a doctor.

Can I use Dual Action Complete if I am pregnant or breastfeeding?

If you are pregnant or breastfeeding, you should ask a health professional before using Dual Action Complete.

What should I do in case of an overdose?

In case of overdose, get medical help or contact a Poison Control Center immediately at 1-800-222-1222.

Are there any allergy alerts for Dual Action Complete?

Yes, do not use if you are allergic to famotidine or other acid reducers.

What are the side effects of Dual Action Complete?

While specific side effects are not listed, you should stop use and consult a doctor if you experience worsening heartburn or other concerning symptoms.

Uses and Indications

This drug is indicated for the relief of heartburn associated with acid indigestion and sour stomach. It is effective in alleviating heartburn due to acid indigestion as well.

Limitations of Use

No teratogenic or nonteratogenic effects have been mentioned in the provided data.

Dosage and Administration

Adults and children 12 years and over are instructed to chew 1 tablet completely before swallowing to relieve symptoms. It is essential that the tablet is not swallowed whole. The maximum recommended dosage is 2 chewable tablets within a 24-hour period.

For children under 12 years of age, it is advised to consult a doctor before use.

Contraindications

Do not use in patients who have difficulty or pain swallowing food, vomiting with blood, or bloody or black stools, as these may indicate a serious condition requiring medical attention. Additionally, the use of this product is contraindicated in conjunction with other acid reducers.

Warnings and Precautions

Allergy Alert Do not use if allergic to famotidine or other acid reducers.

Do Not Use If

  • There is trouble or pain swallowing food, vomiting with blood, or bloody or black stools, as these may indicate a serious condition. Consult a doctor immediately.

  • Taking other acid reducers.

Ask a Doctor Before Use If

  • Heartburn has persisted for over 3 months, which may signal a more serious condition.

  • Experiencing heartburn accompanied by lightheadedness, sweating, or dizziness.

  • There is chest pain or shoulder pain with shortness of breath, sweating, pain spreading to arms, neck, or shoulders, or lightheadedness.

  • There is frequent chest pain or wheezing, particularly with heartburn.

  • There is unexplained weight loss, nausea, vomiting, stomach pain, or kidney disease.

Ask a Doctor or Pharmacist Before Use If

  • Currently taking a prescription drug, as antacids and acid reducers may interact with certain medications.

Stop Use and Ask a Doctor If

  • Heartburn continues or worsens.

  • The product is needed for more than 14 days.

Get Emergency Medical Help In case of overdose, seek medical help or contact a Poison Control Center immediately at 1-800-222-1222.

Side Effects

Patients should be aware of the following adverse reactions associated with the use of famotidine-containing products:

Allergy Alert

  • Use is contraindicated in patients with a known allergy to famotidine or other acid reducers.

Serious Conditions

  • Patients should not use these products if they experience:

    • Trouble or pain swallowing food.

    • Vomiting with blood.

    • Bloody or black stools.These symptoms may indicate a serious underlying condition, and medical attention should be sought immediately.

Warnings

  • Patients should consult a doctor before use if they have:

    • Had heartburn for more than 3 months, which may suggest a more serious condition.

    • Heartburn accompanied by lightheadedness, sweating, or dizziness.

    • Chest pain or shoulder pain with shortness of breath, sweating, or pain radiating to the arms, neck, or shoulders.

    • Frequent chest pain.

    • Frequent wheezing, particularly in conjunction with heartburn.

    • Unexplained weight loss.

    • Nausea or vomiting.

    • Stomach pain.

    • Kidney disease.

Discontinuation

  • Patients should stop using the product and consult a doctor if:

    • Heartburn persists or worsens.

    • The product is needed for more than 14 days.

Additional Considerations

  • Patients taking prescription medications should be aware that antacids and acid reducers may interact with certain drugs. It is advisable to consult a healthcare professional before use.

Drug Interactions

Antacids and acid reducers, including various formulations such as Careone Acid Reducer Complete, Complete, Topcare Dual Action Complete, Up and up Dual Action Acid Reducer and Antacid, Injoy Heartburn Relief, Pepcid Complete, Acid Reducer Complete, Dual Action Complete, Good Sense Dual Action Complete, and Equaline Complete, may interact with certain prescription drugs.

While specific drug interaction details are not provided for many of these products, it is important to note that the potential for interactions exists. Healthcare professionals should be aware of this possibility when prescribing medications alongside these antacids and acid reducers. Monitoring for any adverse effects or changes in therapeutic efficacy is advisable when these products are used concurrently with other medications.

Pediatric Use

Children under 12 years should be advised to consult a doctor before using any of the products listed. For adults and children aged 12 years and older, the following dosing instructions apply:

  • Chew 1 tablet completely before swallowing.

  • Do not exceed 2 chewable tablets in a 24-hour period.

  • It is important not to swallow the tablet whole.

These guidelines are consistent across multiple formulations, including Careone Acid Reducer Complete, Complete, Topcare Dual Action Complete, Up and up Dual Action Acid Reducer and Antacid, Injoy Heartburn Relief, Pepcid Complete, Acid Reducer Complete, Dual Action Complete, Good Sense Dual Action Complete, and Equaline Complete.

Additionally, all products should be kept out of reach of children, and in the event of an overdose, medical help or contact with a Poison Control Center should be sought immediately.

Geriatric Use

No specific information regarding geriatric use, dosage adjustments, safety concerns, or special precautions for elderly patients is provided in the inserts for the following products: Careone Acid Reducer Complete, Complete, Topcare Dual Action Complete, Up and up Dual Action Acid Reducer and Antacid, Injoy Heartburn Relief, Pepcid Complete, Acid Reducer Complete, Dual Action Complete, Good Sense Dual Action Complete, and Equaline Complete.

For Pepcid Complete, it is advised that elderly patients consult a healthcare professional before use if they have kidney disease. Given the absence of specific data, healthcare providers should exercise caution and consider individual patient factors when prescribing these medications to geriatric patients. Regular monitoring may be warranted to ensure safety and efficacy in this population.

Pregnancy

Pregnant patients should consult a healthcare professional before using any of the products listed, as there is limited data on the safety of these medications during pregnancy. The available information indicates that the use of these products, which include various formulations of acid reducers and antacids, may pose potential risks to fetal outcomes.

Healthcare providers are advised to assess the benefits versus risks when considering these medications for pregnant patients. It is essential to evaluate the specific needs of the patient and the potential impact on both maternal and fetal health. Given the lack of comprehensive studies on the effects of these medications during pregnancy, caution is recommended, and alternative treatments should be considered when appropriate.

In summary, pregnant patients are encouraged to seek professional guidance before using these medications to ensure the safety and well-being of both themselves and their developing fetus.

Lactation

Lactating mothers are advised to consult a healthcare professional before using any acid reducer or antacid products, including those in tablet or chewable form, while breastfeeding. There is no specific data provided regarding the excretion of these medications in breast milk or their potential effects on breastfed infants. Therefore, caution is recommended, and healthcare guidance is essential to ensure the safety and well-being of both the mother and the infant during lactation.

Renal Impairment

Patients with renal impairment should exercise caution when considering the use of various acid reducer and antacid products. It is recommended that patients consult a healthcare professional prior to use if they have a history of kidney disease.

While specific dosage adjustments, monitoring requirements, or safety considerations for patients with reduced kidney function are not detailed in the product inserts, the consistent advice across multiple labels emphasizes the importance of medical consultation. This precaution is crucial to ensure the safe use of these medications in individuals with compromised renal function.

No specific creatinine clearance thresholds or detailed guidelines for dosage modifications have been provided in the available data, underscoring the necessity for individualized assessment by healthcare providers.

Hepatic Impairment

Patients with hepatic impairment may not have specific dosage adjustments, special monitoring, or precautions outlined in the drug inserts for the following products: Good Neighbor Pharmacy Dual Action Complete, Careone Acid Reducer Complete, Complete, Signature Care Acid Reducer Complete, Basic Care Dual Action Complete, Topcare Dual Action Complete, Up and up Dual Action Acid Reducer and Antacid, Injoy Heartburn Relief, Equate Acid Reducer Complete, Pepcid Complete, Acid Reducer Complete, Acid Reducer Plus Antacid, Dual Action Complete, Leader Acid Reducer Complete, Dg Health Acid Reducer Complete, Good Sense Dual Action Complete, and Equaline Complete.

As there is no specific information provided regarding the management of patients with liver problems, healthcare professionals should exercise caution and consider individual patient factors when prescribing these medications. Regular monitoring of liver function tests may be advisable, although specific parameters are not detailed in the product information.

Overdosage

In the event of an overdose, it is imperative to seek medical assistance immediately or contact a Poison Control Center at 1-800-222-1222. Symptoms of overdose may vary, but prompt intervention is crucial for effective management.

Healthcare professionals should monitor the patient closely for any adverse effects and provide supportive care as necessary. The specific symptoms associated with overdose may not be detailed in the available data; however, the urgency of contacting medical professionals cannot be overstated.

All individuals using any of the products listed, including those in tablet and chewable forms, should be aware of the potential risks associated with overdose and the importance of adhering to recommended dosages.

Nonclinical Toxicology

Teratogenic Effects

No teratogenic effects were reported across the reviewed products. However, it is advised that individuals who are pregnant or breastfeeding consult a health professional before use.

Non-Teratogenic Effects

No specific non-teratogenic effects were mentioned in the provided data for the reviewed products.

Nonclinical Toxicology

Details regarding nonclinical toxicology were not provided in the inserts of the reviewed products.

Animal Pharmacology and Toxicology

No specific information regarding animal pharmacology and toxicology was available in the reviewed products.

Storage and Handling

The products are available in two forms: Tablet and Chewable. They should be stored at a temperature range of 20-25°C (68-77°F) and must be protected from moisture to maintain their efficacy and safety.

It is important to note that certain products have additional handling instructions. Specifically, if the foil inner seal imprinted with "Sealed For Your Safety" is broken or missing, or if the pouch is torn or damaged, the product should not be used.

Product Labels

The table below lists all over-the-counter labels containing famotidine, calcium carbonate, and magnesium hydroxide. Use it to compare dosage forms, strengths, and uses across products.

FDA-Approved Famotidine, calcium carbonate, magnesium hydroxide Labels (Originator & Generics) showing branded and generic formulations with forms, routes, strengths, and FDA approval years.
More Details

Repacked & Relabeled Product Labels

The table below lists products marketed under repackaged or relabeled National Drug Codes (NDCs).

Only the carton or labeler has changed; the underlying SPL and prescribing information match the primary labels above, so no separate detail pages are provided.

Below are the non-prescription pack sizes of Good Neighbor Pharmacy Dual Action Complete (famotidine, calcium carbonate, magnesium hydroxide). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

FDA-Approved Famotidine, calcium carbonate, magnesium hydroxide Repack / Relabels showing repack and relabel formulations with forms, routes, strengths, and FDA years.
Label
Forms
Routes
Strength range
FDA year
Data Generation & Sources

This page was automatically generated and is maintained by the AllDrugs AI Data-Science Team. It consolidates data from 46 FDA Structured Product Labels (DailyMed) for Famotidine, Calcium Carbonate, Magnesium Hydroxide (marketed as Good Neighbor Pharmacy Dual Action Complete, Careone Acid Reducer Complete, Complete), with data retrieved by a validated AI data-extraction workflow. This includes 46 distinct product formulations. All FDA-listed dosage forms and strengths are aggregated in the sections above. Regulatory status appears in the Summary Information panel and was verified in the FDA National Drug Code directory. Detailed product-specific information is available via the individual label pages linked above. No human clinician has reviewed this version.

Learn more in our Editorial Policy

Last AI update:

Primary FDA sources:

Orange Book data shown on this page are limited to Regulatory Status (Rx), Established Pharmacologic Class (EPC), and Mechanism of Action (MoA).

Regulatory data notice: Information on this page is reproduced verbatim from FDA public databases (NSDE, Orange Book, Purple Book, DailyMed SPL). NDA/ANDA drugs are FDA-approved, BLA biologics are FDA-licensed. Inclusion alone does not guarantee current market availability or imply FDA endorsement.

Medical disclaimer: This AI-generated content is provided for educational purposes only and does not constitute medical advice. Always consult a licensed healthcare professional for diagnosis or treatment decisions.