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Alka-Seltzer Plus Maximum Strength Day and Night Cold and Flu

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Active ingredients
  • Doxylamine Succinate 6.25 mg
  • Acetaminophen 325 mg
  • Dextromethorphan Hydrobromide 10 mg
  • Phenylephrine Hydrochloride 5 mg
Other brand names
Dosage form
Capsule, Liquid Filled
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2017
Label revision date
December 4, 2025
Active ingredients
  • Doxylamine Succinate 6.25 mg
  • Acetaminophen 325 mg
  • Dextromethorphan Hydrobromide 10 mg
  • Phenylephrine Hydrochloride 5 mg
Other brand names
Dosage form
Capsule, Liquid Filled
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 2017
Label revision date
December 4, 2025
Manufacturer
Bayer HealthCare LLC.
Registration number
M012
NDC root
0280-1581

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If you are a consumer or patient please visit this version.

Drug Overview

Alka-Seltzer PLUS is a maximum strength medication designed to temporarily relieve symptoms associated with colds and flu. It contains several active ingredients: acetaminophen, which helps reduce pain and fever; dextromethorphan HBr, a cough suppressant; phenylephrine HCl, a nasal decongestant; and doxylamine succinate, an antihistamine. Together, these components work to alleviate minor aches and pains, headaches, coughs, sore throats, nasal and sinus congestion, and to temporarily reduce fever.

This medication is available in liquid-filled capsules, with options for both daytime and nighttime relief. By addressing a range of symptoms such as nasal congestion, headaches, body aches, coughs, sore throats, sinus pressure, and runny noses, Alka-Seltzer PLUS aims to help you feel more comfortable when you're under the weather.

Uses

You can use this medication to temporarily relieve symptoms associated with a cold or flu. It helps ease minor aches and pains, headaches, coughs, and sore throats. Additionally, it can reduce nasal and sinus congestion and lower fever for a short period.

This medication is designed to provide comfort when you're feeling under the weather, helping you manage those bothersome symptoms effectively.

Dosage and Administration

If you are an adult or a child aged 12 years and older, you should take 2 capsules with a glass of water every 4 hours as needed. However, it’s important not to exceed 10 capsules in a 24-hour period unless your doctor advises otherwise.

If you are caring for a child under 12 years old, please do not use this medication for them. Always follow the recommended guidelines to ensure safe and effective use.

What to Avoid

You should avoid using this product if you are currently taking any other medication that contains acetaminophen, whether it's a prescription or over-the-counter drug. If you're unsure, please consult your doctor or pharmacist. Additionally, do not use this product if you are taking a monoamine oxidase inhibitor (MAOI) for depression or other conditions, or if you have taken one in the past two weeks. It's also important to avoid this product if you have had an allergic reaction to it or any of its ingredients, and it should not be given to children under 12 years of age.

Always follow the recommended dosage and never exceed it. Misuse of this product can lead to serious health issues, including dependence (a condition where your body becomes reliant on a substance). If you have any questions or concerns, please reach out to a healthcare professional for guidance.

Side Effects

Taking this product may lead to some serious side effects. It contains acetaminophen, which can cause severe liver damage if you exceed 4,000 mg in a 24-hour period, take it with other medications containing acetaminophen, or consume three or more alcoholic drinks daily while using it.

You should also be aware of potential allergic reactions, which can be severe. Symptoms may include skin reddening, blisters, rash, hives, facial swelling, wheezing (asthma), or even shock. If you experience any of these symptoms, stop using the product and seek medical help immediately. Additionally, if you have a sore throat that is severe, lasts more than two days, or is accompanied by fever, headache, rash, nausea, or vomiting, consult your doctor right away.

Warnings and Precautions

This product contains acetaminophen, which can lead to severe liver damage if you take more than 4,000 mg in 24 hours, use it with other medications containing acetaminophen, or consume three or more alcoholic drinks daily while using it. Be aware that acetaminophen may also cause serious skin or allergic reactions, such as skin reddening, blisters, rash, hives, facial swelling, asthma (wheezing), or shock. If you experience any of these symptoms, stop using the product and seek medical help immediately.

If you have a severe sore throat that lasts more than two days or is accompanied by fever, headache, rash, nausea, or vomiting, consult your doctor right away. Always keep this product out of reach of children, and in case of overdose, contact a Poison Control Center or seek medical assistance immediately, even if no symptoms are present. If you notice that your pain, cough, or nasal congestion worsens or lasts longer than seven days, or if your fever worsens or lasts more than three days, stop using the product and call your doctor.

Overdose

Taking more than 4,000 mg of acetaminophen in a 24-hour period can lead to severe liver damage. If you think you or someone else may have taken too much acetaminophen, it’s important to seek emergency medical help right away.

Signs of an overdose can include nausea, vomiting, loss of appetite, confusion, or jaundice (yellowing of the skin or eyes). If you notice any of these symptoms or suspect an overdose, don’t hesitate to get medical assistance immediately. Your health and safety are the top priority.

Pregnancy Use

If you are pregnant or breastfeeding, it’s important to consult with a healthcare professional before using this medication. They can provide guidance on whether it’s safe for you and your baby. Always prioritize your health and the health of your child by seeking expert advice.

Lactation Use

If you are pregnant or breastfeeding, it’s important to consult with a healthcare professional before using any medication. This ensures that you understand any potential risks and can make informed decisions about your health and the health of your baby. Always prioritize open communication with your doctor regarding your breastfeeding journey.

Pediatric Use

It’s important to be cautious when considering this medication for children. You should not use it in children under 12 years of age. For those 12 years and older, the recommended dosage is 2 capsules taken with water every 4 hours, but be sure not to exceed 10 capsules in a 24-hour period unless directed by a doctor. Always consult with a healthcare professional if you have any questions or concerns about using this medication for your child.

Geriatric Use

If you are an older adult or caring for one, it's important to consult a doctor before using this product, especially if there are existing health conditions like liver disease, heart disease, high blood pressure, thyroid disease, diabetes, or issues with urination due to an enlarged prostate. Additionally, if you have a persistent cough, particularly from smoking, asthma, or emphysema, seek medical advice first.

Always follow the recommended dosage and avoid taking more than directed. Quick medical attention is essential for both adults and children, even if there are no noticeable signs or symptoms. Your health and safety are the top priority, so don’t hesitate to reach out to a healthcare professional with any concerns.

Renal Impairment

If you have kidney problems, it's important to know that there are no specific guidelines or dosage adjustments mentioned for your condition in the available information. This means that the usual recommendations for monitoring or safety considerations related to renal impairment (kidney issues) are not provided.

Always consult your healthcare provider for personalized advice and to ensure that any medications you take are safe and appropriate for your kidney health. They can help you understand how your condition may affect your treatment plan.

Hepatic Impairment

If you have liver problems, it's important to be cautious when using products that contain acetaminophen. Taking more than 4,000 mg of acetaminophen in a 24-hour period can lead to severe liver damage. Additionally, combining this product with other medications that also contain acetaminophen can increase your risk.

You should also be aware that consuming three or more alcoholic drinks each day while using this product can further harm your liver. Always consult with your healthcare provider for personalized advice and to ensure your safety when using medications.

Drug Interactions

It's important to have open conversations with your healthcare provider about any medications or tests you may be taking. While there are no specific drug interactions or laboratory test interactions noted for this medication, your healthcare provider can help ensure that everything you are taking works well together and is safe for you.

Always feel free to ask questions and share your complete list of medications and any lab tests you may be undergoing. This way, you can receive the best possible care tailored to your needs.

Storage and Handling

To ensure the best performance of your product, store it at room temperature, keeping it away from excessive heat. Temperatures above 40°C (104°F) can damage the product, so it's important to maintain a stable environment.

When handling the product, always do so with clean hands and in a clean area to prevent contamination. Following these simple guidelines will help you use the product safely and effectively.

Additional Information

No further information is available.

FAQ

What is Alka-Seltzer PLUS used for?

Alka-Seltzer PLUS is used to temporarily relieve symptoms due to a cold or flu, including minor aches and pains, headache, cough, sore throat, nasal and sinus congestion, and to reduce fever.

What are the active ingredients in Alka-Seltzer PLUS?

The active ingredients include acetaminophen (pain reliever and fever reducer), dextromethorphan HBr (cough suppressant), phenylephrine HCl (nasal decongestant), and doxylamine succinate (antihistamine).

How should adults and children over 12 take Alka-Seltzer PLUS?

Adults and children 12 years and over should take 2 capsules with water every 4 hours, not exceeding 10 capsules in 24 hours unless directed by a doctor.

Are there any contraindications for using Alka-Seltzer PLUS?

Yes, do not use it with any other drug containing acetaminophen, if you are taking a monoamine oxidase inhibitor (MAOI), or if you have had an allergic reaction to this product or its ingredients.

What should I do if I experience severe side effects?

If you experience severe skin reactions, difficulty breathing, or if your sore throat is severe and persists for more than 2 days, stop use and seek medical help immediately.

Can I use Alka-Seltzer PLUS if I am pregnant or breastfeeding?

If you are pregnant or breastfeeding, you should ask a health professional before using Alka-Seltzer PLUS.

What precautions should I take when using Alka-Seltzer PLUS?

Keep out of reach of children, do not exceed the recommended dosage, and seek medical help in case of overdose or if symptoms worsen or persist.

What are the storage instructions for Alka-Seltzer PLUS?

Store Alka-Seltzer PLUS at room temperature and avoid excessive heat above 40°C (104°F).

Packaging Info

Below are the non-prescription pack sizes of Alka-Seltzer Plus Maximum Strength Day and Night Cold and Flu (acetaminophen, dextromethorphan hydrobromide, doxylamine succinate, phenylephrine hydrochloride). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Alka-Seltzer Plus Maximum Strength Day and Night Cold and Flu packaging includes kits with multiple components.
Details

Drug Information (PDF)

This file contains official product information for Alka-Seltzer Plus Maximum Strength Day and Night Cold and Flu, including active ingredients, dosage, warnings, and labeling as submitted by the manufacturer for OTC distribution.

View product document (PDF)

Description

No description information is available for the drug.

Uses and Indications

This drug is indicated for the temporary relief of symptoms associated with the common cold or influenza. Specifically, it alleviates minor aches and pains, headache, cough, sore throat, and nasal and sinus congestion. Additionally, it temporarily reduces fever.

There are no teratogenic or nonteratogenic effects associated with this drug.

Dosage and Administration

Adults and children aged 12 years and over are instructed to take 2 capsules with water every 4 hours as needed. The maximum dosage should not exceed 10 capsules within a 24-hour period, unless otherwise directed by a healthcare professional.

This medication is not recommended for use in children under 12 years of age.

Contraindications

Use of this product is contraindicated in the following situations:

  • Co-administration with any other drug containing acetaminophen, whether prescription or nonprescription, due to the risk of acetaminophen overdose. If uncertain about the presence of acetaminophen in other medications, consult a healthcare professional.

  • Concurrent use with prescription monoamine oxidase inhibitors (MAOIs) or within 2 weeks of discontinuing an MAOI, as this may lead to serious interactions. Verify the presence of MAOIs in prescription medications with a healthcare provider if unsure.

  • History of allergic reactions to this product or any of its components, as this may result in severe hypersensitivity reactions.

  • Use in children under 12 years of age is contraindicated due to safety concerns.

Additionally, it is essential not to exceed the recommended dosage of this product to avoid potential adverse effects.

Warnings and Precautions

Severe liver damage may occur with the use of this product, which contains acetaminophen. Healthcare professionals should advise patients to avoid exceeding 4,000 mg of acetaminophen within a 24-hour period, to refrain from using other medications that also contain acetaminophen, and to limit alcohol consumption to fewer than three alcoholic drinks per day while using this product.

Patients should be informed of the potential for severe allergic reactions associated with acetaminophen. Symptoms may include skin reddening, blisters, rash, hives, facial swelling, wheezing, and shock. In the event of any skin or general allergic reaction, patients must be instructed to discontinue use immediately and seek medical assistance.

In cases of severe sore throat that persists for more than two days or is accompanied by fever, headache, rash, nausea, or vomiting, patients should be advised to consult a physician promptly.

It is essential to keep this product out of reach of children. In the event of an overdose, immediate medical attention should be sought, and contacting a Poison Control Center is recommended. Quick medical intervention is critical for both adults and children, even if no signs or symptoms are initially apparent.

Patients should be instructed to stop taking the product and consult a healthcare provider if any of the following occur: worsening pain, cough, or nasal congestion lasting more than seven days; fever that worsens or lasts more than three days; presence of redness or swelling; emergence of new symptoms; recurrence of cough accompanied by rash or headache; or the onset of nervousness, dizziness, or sleeplessness. These symptoms may indicate a serious condition requiring further evaluation.

Side Effects

Patients using this product should be aware of several important warnings regarding potential adverse reactions.

Severe liver damage may occur if patients exceed 4,000 mg of acetaminophen in a 24-hour period, use other medications containing acetaminophen concurrently, or consume three or more alcoholic drinks daily while using this product.

Additionally, acetaminophen may cause severe skin or allergic reactions. Symptoms of such reactions can include skin reddening, blisters, rash, hives, facial swelling, asthma (wheezing), and shock. In the event of a skin or general allergic reaction, patients are advised to discontinue use immediately and seek medical assistance.

Furthermore, if a sore throat is severe, persists for more than two days, or is accompanied by fever, headache, rash, nausea, or vomiting, patients should consult a healthcare professional promptly.

Drug Interactions

There are currently no documented drug interactions associated with this medication. Additionally, there are no known interactions with laboratory tests. As such, no specific recommendations for dosage adjustments or monitoring are necessary at this time.

Packaging & NDC

Below are the non-prescription pack sizes of Alka-Seltzer Plus Maximum Strength Day and Night Cold and Flu (acetaminophen, dextromethorphan hydrobromide, doxylamine succinate, phenylephrine hydrochloride). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Alka-Seltzer Plus Maximum Strength Day and Night Cold and Flu packaging includes kits with multiple components.
Details

Pediatric Use

Pediatric patients under 12 years of age should not use this medication. For adolescents aged 12 years and older, the recommended dosage is 2 capsules taken with water every 4 hours, with a maximum of 10 capsules in a 24-hour period, unless otherwise directed by a healthcare professional. Caution is advised to ensure adherence to the recommended dosing guidelines.

Geriatric Use

Elderly patients should consult a healthcare provider prior to using this product if they have a history of liver disease, heart disease, high blood pressure, thyroid disease, diabetes, cough with excessive phlegm, difficulty urinating due to prostate gland enlargement, or persistent or chronic cough associated with smoking, asthma, or emphysema.

It is essential for geriatric patients to adhere strictly to the recommended dosage and not exceed it, as this population may be more susceptible to adverse effects. Quick medical attention is critical for elderly patients, even in the absence of noticeable signs or symptoms, to ensure timely management of any potential complications. Monitoring and appropriate dose adjustments may be necessary based on individual health status and concurrent medical conditions.

Pregnancy

Pregnant patients and those who are breastfeeding should consult a healthcare professional prior to using this medication. The potential risks and benefits must be carefully weighed, as the effects on fetal outcomes and lactation are not fully established. It is essential for women of childbearing potential to seek medical advice to ensure safe use during pregnancy and lactation.

Lactation

Lactating mothers are advised to consult a health professional prior to using this medication. There is currently no specific data available regarding the excretion of this medication in breast milk or its effects on breastfed infants. Therefore, caution is recommended when administering this medication to lactating individuals.

Renal Impairment

There is no specific information available regarding dosage adjustments, special monitoring, or safety considerations for patients with renal impairment. Healthcare professionals should exercise caution when prescribing to patients with reduced kidney function, as the absence of detailed guidance necessitates careful clinical judgment. Regular monitoring of renal function may be advisable in this patient population.

Hepatic Impairment

Patients with hepatic impairment should be closely monitored when using this product, which contains acetaminophen. It is important to note that severe liver damage may occur if patients exceed the recommended dosage of 4,000 mg of acetaminophen in a 24-hour period. Additionally, patients should avoid the concurrent use of other medications containing acetaminophen, as this can further increase the risk of liver injury.

Patients with compromised liver function are also advised to limit alcohol consumption. Specifically, the intake of three or more alcoholic drinks per day while using this product may significantly heighten the risk of liver damage. Therefore, careful consideration of liver function and adherence to recommended dosing guidelines is essential to minimize the potential for adverse effects in this population. Regular monitoring of liver function tests may be warranted in patients with existing hepatic impairment to ensure safety and efficacy during treatment.

Overdosage

In cases of acetaminophen overdosage, severe liver damage may occur if an individual ingests more than 4,000 mg within a 24-hour period. This threshold is critical, as exceeding it significantly increases the risk of hepatotoxicity.

Healthcare professionals are advised to seek emergency medical assistance immediately if an acetaminophen overdose is suspected. Prompt intervention is essential to mitigate potential complications and to initiate appropriate management strategies.

Nonclinical Toxicology

There is currently no available information regarding teratogenic effects, non-teratogenic effects, or any specific nonclinical toxicology data. Additionally, no details are provided concerning animal pharmacology and toxicology.

Postmarketing Experience

Postmarketing experience has identified that acetaminophen may be associated with severe skin reactions and severe allergic reactions. Reported symptoms include skin reddening, blisters, rash, hives, facial swelling, asthma (wheezing), and shock.

In instances of skin or general allergic reactions, it is advised to discontinue use and seek immediate medical assistance. Additionally, users are instructed to stop use and consult a healthcare professional if any of the following occur: worsening or persistent pain, cough, or nasal congestion lasting more than 7 days; fever that worsens or lasts more than 3 days; presence of redness or swelling; emergence of new symptoms; recurrence of cough accompanied by rash or headache; or experiences of nervousness, dizziness, or sleeplessness, as these may indicate a serious condition.

In the event of an overdose, it is crucial to obtain medical help or contact a Poison Control Center immediately, as prompt medical attention is essential for both adults and children, even in the absence of noticeable signs or symptoms.

Patient Counseling

Healthcare providers should advise patients to keep this medication out of reach of children to prevent accidental ingestion. In the event of an overdose, patients must seek medical help or contact a Poison Control Center immediately, as prompt medical attention is crucial for both adults and children, even if no signs or symptoms are apparent.

Patients should be informed not to use this product in conjunction with any other medications containing acetaminophen, whether prescription or nonprescription. If patients are uncertain whether a drug contains acetaminophen, they should consult a doctor or pharmacist for clarification.

It is essential to instruct patients not to use this product if they are currently taking a prescription monoamine oxidase inhibitor (MAOI) or have stopped taking one within the last two weeks. Patients should be encouraged to ask their healthcare provider or pharmacist if they are unsure whether their prescription medication contains an MAOI.

Patients with a history of allergic reactions to this product or any of its ingredients should be advised against its use. Additionally, this product is not recommended for children under 12 years of age.

While using this medication, patients must not exceed the recommended dosage. They should be instructed to stop use and consult a doctor if their pain, cough, or nasal congestion worsens or persists for more than 7 days, or if their fever worsens or lasts more than 3 days. Patients should also seek medical advice if they notice any redness or swelling, experience new symptoms, or if their cough returns or occurs alongside a rash or headache that lasts, as these may indicate a serious condition.

Patients should be made aware that if they experience nervousness, dizziness, or sleeplessness, they should discontinue use and consult a healthcare professional. Furthermore, patients should be advised to seek medical advice before using this product if they have liver disease, heart disease, high blood pressure, thyroid disease, diabetes, a cough with excessive phlegm, difficulty urinating due to prostate enlargement, or a persistent or chronic cough associated with smoking, asthma, or emphysema.

Lastly, patients taking the blood-thinning medication warfarin should be encouraged to consult their doctor or pharmacist before using this product.

Storage and Handling

The product is supplied in various package configurations, with specific NDC numbers available for identification. It is essential to store the product at room temperature, ensuring that it is kept away from excessive heat, particularly temperatures exceeding 40°C (104°F). Proper storage conditions are crucial to maintain the integrity and efficacy of the product.

Additional Clinical Information

No further data are available.

Drug Information (PDF)

This file contains official product information for Alka-Seltzer Plus Maximum Strength Day and Night Cold and Flu, including active ingredients, dosage, warnings, and labeling as submitted by the manufacturer for OTC distribution.

View product document (PDF)

Data Generation & Sources

This page was automatically generated and is maintained by the AllDrugs AI Data-Science Team. It was built from the FDA Structured Product Label (DailyMed) for Alka-Seltzer Plus Maximum Strength Day and Night Cold and Flu, retrieved by a validated AI data-extraction workflow.

All FDA-listed dosage forms and strengths are shown in the Packaging & NDC Codes section above. Regulatory status appears in the Summary Information panel above and was verified in the FDA National Drug Code directory and the NSDE NDC Directory daily file.

Note: an automated daemon monitors NSDE checksums; when the record for this NDC changes, the new file is pulled instantly and this page is refreshed.

No human clinician has reviewed this version.

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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.