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Onelax

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Active ingredient
Magnesium Citrate 1.745 g/29.6 mL
Other brand names
Drug classes
Calculi Dissolution Agent, Osmotic Laxative
Dosage form
Liquid
Route
Oral
Prescription status
OTC (over the counter)
Pregnancy
See Pregnancy Use Section
Lactation
See Lactation Use Section
Marketed in the U.S.
Since 2024
Label revision date
January 12, 2026
Drug Information (PDF)
Prescribing information, PDF file
Active ingredient
Magnesium Citrate 1.745 g/29.6 mL
Other brand names
Drug classes
Calculi Dissolution Agent, Osmotic Laxative
Dosage form
Liquid
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Pregnancy
See Pregnancy Use Section
Lactation
See Lactation Use Section
Marketed in the U.S.
Since 2024
Label revision date
January 12, 2026
Manufacturer
AKRON PHARMA INC
Registration number
M007
NDC root
71399-0053
Drug Information (PDF)
Prescribing information, PDF file
Packaging Info (2 NDCs)
Packaging & NDC Codes (2)

If you are a healthcare professional or from the pharmaceutical industry please visit this version.

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

Drug Overview

If you're experiencing occasional constipation (irregularity), this drug can help relieve your symptoms. It works by promoting bowel movements, typically within a timeframe of 30 minutes to 6 hours after taking it. The pleasant cherry flavor makes it easier to take, providing a gentle solution to help you feel more comfortable.

Uses

If you're dealing with occasional constipation (irregularity), this medication can help relieve your discomfort. It works by stimulating your bowels, typically leading to a bowel movement within 30 minutes to 6 hours after taking it. This can provide you with quick relief when you need it most.

Dosage and Administration

When taking this medication, it's important to drink a full glass (8 ounces) of liquid with each dose to help with absorption. You can take your dose either as a single daily dose or split it into smaller doses throughout the day, depending on what works best for you.

For adults and children aged 12 years and older, the recommended amount is between half a bottle and a full bottle (10 fluid ounces). If your child is between 6 and 11 years old, they should take between one-third and half a bottle. For children under 6 years of age, it's essential to consult a doctor before giving them this medication to ensure it's safe and appropriate.

What to Avoid

It's important to use laxative products responsibly. You should not use them for longer than one week unless your doctor specifically advises you to do so. Additionally, while using this product, make sure you do not exceed the maximum recommended daily dosage within a 24-hour period. Following these guidelines helps prevent potential misuse and dependence (a condition where your body relies on a substance to function normally). Always prioritize your health and consult with a healthcare professional if you have any questions or concerns.

Side Effects

If you experience rectal bleeding or do not have a bowel movement after using this product, it's important to stop using it and consult a doctor, as these could indicate a serious condition. Before using, you should also talk to your doctor if you have kidney disease, are on a magnesium-restricted or sodium-restricted diet, have stomach pain, nausea, or vomiting, or if you've noticed a sudden change in your bowel habits that lasts more than a week.

Additionally, it's crucial to avoid using laxative products for more than one week unless directed by a healthcare professional.

Warnings and Precautions

It's important to use laxative products carefully. You should not use them for more than one week unless your doctor advises you to do so. Before using a laxative, consult your doctor if you have kidney disease, are on a magnesium or sodium-restricted diet, are experiencing stomach pain, nausea, or vomiting, or if you've noticed a sudden change in your bowel habits lasting more than a week. Additionally, if you are taking any prescription medications, check with your doctor or pharmacist first.

If you suspect an overdose, seek emergency medical help immediately or contact a Poison Control Center at 1-800-222-1222. You should also stop using the laxative and call your doctor if you experience rectal bleeding or if you do not have a bowel movement after using it, as these could indicate a more serious health issue.

Overdose

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

Always err on the side of caution—if you notice any concerning symptoms or if you’re unsure, don’t hesitate to get help right away. 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

When it comes to using this medication for children, it's important to follow specific guidelines based on their age. For children aged 12 years and older, the recommended dosage is between half a bottle to a full bottle (10 fl oz). For those aged 6 to 11 years, the dosage should be between one-third to half a bottle. If your child is under 6 years old, you should consult a doctor before giving them this medication.

Always keep the medication out of reach of children to prevent accidental ingestion. In the event of an overdose, seek medical help immediately or contact a Poison Control Center at 1-800-222-1222. Your child's safety is the top priority, so please adhere to these guidelines carefully.

Geriatric Use

While there is no specific information available about the use of this medication in older adults, it’s important to approach any new treatment with caution. Since older adults may have different health needs and may be taking multiple medications, it’s always a good idea to consult with a healthcare provider before starting any new medication. They can help ensure that the treatment is safe and appropriate for your individual health situation.

If you or a loved one is an older adult, be sure to discuss any concerns or questions with your doctor, especially regarding potential interactions with other medications or existing health conditions. Your healthcare provider can provide personalized guidance to help manage your health effectively.

Renal Impairment

If you have kidney disease, it’s important to consult your doctor before using this medication. Your healthcare provider can help determine if it’s safe for you and if any adjustments to your dosage are necessary. Always prioritize your kidney health and follow your doctor's guidance closely.

Hepatic Impairment

If you have liver problems, it's important to know that the information provided does not include specific guidelines for dosage adjustments, special monitoring, or precautions related to your condition. This means that there are no tailored recommendations for how the medication may affect you differently due to your liver health.

Always consult your healthcare provider for personalized advice and to ensure that any treatment plan is safe and effective for your specific situation. They can help determine the best approach based on your liver function and overall health.

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 in a cool, dry place at temperatures between 46º-86ºF (8º-30ºC). Avoid refrigerating the product, as well as exposing it to excessive heat or freezing conditions, which can affect its effectiveness.

Once you open the bottle, remember to discard any unused product within 24 hours to maintain safety and quality. Following these guidelines will help you use the product safely and effectively.

Additional Information

You should take this medication orally. If you are pregnant or breastfeeding, it's important to consult a healthcare professional before using it. Always keep this medication out of reach of children. In the event of an overdose, seek medical help immediately or contact a Poison Control Center at 1-800-222-1222.

FAQ

What does this drug do?

This drug relieves occasional constipation (irregularity) and generally produces a bowel movement in 1/2 to 6 hours.

How should I take this drug?

You should drink a full glass (8 ounces) of liquid with each dose. It may be taken as a single daily dose or in divided doses.

What is the recommended dosage for adults and children over 12?

Adults and children 12 years of age and over should take 1/2 bottle to 1 bottle (10 fl oz).

What is the dosage for children aged 6 to 11?

Children 6 to 11 years of age should take 1/3 bottle to 1/2 bottle.

What should I do if I have rectal bleeding or no bowel movement after use?

You should stop use and ask a doctor, as these could be signs of a serious condition.

Are there any precautions I should take before using this drug?

Yes, ask a doctor before use if you have kidney disease, a magnesium or sodium restricted diet, stomach pain, nausea, vomiting, or a sudden change in bowel habits lasting more than 1 week.

Can I use this drug if I am pregnant or breastfeeding?

If you are pregnant or breastfeeding, you should ask a health professional before use.

What should I do in case of overdose?

In case of overdose, get medical help or contact a Poison Control Center (1-800-222-1222) right away.

How should I store this drug?

Store between 46º-86ºF (8º-30ºC), do not refrigerate, and protect from excessive heat and freezing. Discard unused product within 24 hours of opening the bottle.

How long can I use this laxative?

Do not use laxative products for longer than 1 week unless directed by a doctor.

Packaging Info

Below are the non-prescription pack sizes of Onelax (magnesium citrate). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Onelax.
Details

Drug Information (PDF)

This file contains official product information for Onelax, 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 relief of occasional constipation (irregularity). It generally produces a bowel movement within 1/2 to 6 hours following administration.

Dosage and Administration

Patients should consume a full glass (8 ounces) of liquid with each dose. The medication may be administered as a single daily dose or divided into multiple doses throughout the day.

For adults and children aged 12 years and older, the recommended dosage ranges from 1/2 bottle to 1 full bottle (10 fl oz). For children aged 6 to 11 years, the appropriate dosage is between 1/3 bottle and 1/2 bottle.

For children under 6 years of age, it is advised to consult a healthcare professional before administration to determine the appropriate dosage.

Contraindications

Laxative products are contraindicated for use beyond one week unless directed by a healthcare professional. Prolonged use may lead to dependency or other adverse effects. Additionally, exceeding the maximum recommended daily dosage within a 24-hour period is contraindicated, as it may increase the risk of serious side effects.

Warnings and Precautions

The use of laxative products should be limited to a duration of no longer than one week unless specifically directed by a healthcare professional. Prolonged use may lead to adverse effects and should be approached with caution.

Healthcare professionals should advise patients to consult a doctor prior to using laxative products if they have any of the following conditions: kidney disease, a magnesium-restricted diet, a sodium-restricted diet, stomach pain, nausea, or vomiting. Additionally, patients who have experienced a sudden change in bowel habits lasting more than one week should seek medical advice before use. It is also recommended that patients inform their healthcare provider or pharmacist if they are currently taking any prescription medications, as interactions may occur.

In the event of an overdose, immediate medical assistance should be sought, or the Poison Control Center (1-800-222-1222) should be contacted without delay.

Patients should be instructed to discontinue use and consult a doctor if they experience rectal bleeding or if there is no bowel movement following the use of the laxative. These symptoms may indicate a serious underlying condition that requires further evaluation.

Side Effects

Patients should be advised to stop use and consult a healthcare professional if they experience rectal bleeding or have no bowel movement after use, as these symptoms may indicate a serious condition.

Before using the product, patients should seek medical advice if they have a history of kidney disease, are on a magnesium-restricted or sodium-restricted diet, are experiencing stomach pain, nausea, or vomiting, or have noticed a sudden change in bowel habits lasting more than one week.

It is important to note that laxative products should not be used for longer than one week unless directed by a doctor, to avoid potential complications associated with prolonged use.

Drug Interactions

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

Packaging & NDC

Below are the non-prescription pack sizes of Onelax (magnesium citrate). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Onelax.
Details

Pediatric Use

Pediatric patients aged 12 years and over may be administered 1/2 bottle to 1 bottle (10 fl oz). For children aged 6 to 11 years, the recommended dosage is 1/3 bottle to 1/2 bottle. It is advised that children under 6 years of age consult a doctor prior to use.

Healthcare professionals should ensure that the product is kept out of reach of children. In the event of an overdose, immediate medical assistance should be sought, or the Poison Control Center (1-800-222-1222) should be contacted.

Geriatric Use

Elderly patients may not have specific information regarding the use of this medication, including dosage adjustments, safety concerns, or special precautions. Therefore, healthcare providers should exercise caution when prescribing this medication to geriatric patients. It is advisable to monitor these patients closely for any adverse effects or changes in therapeutic response, given the lack of targeted data for this population.

Pregnancy

Pregnant patients and those who are breastfeeding should consult a healthcare professional prior to using this medication. It is important to evaluate the potential risks and benefits associated with the use of this drug during pregnancy and lactation. Healthcare providers should consider the available data and individual patient circumstances when advising on the use of this medication in these populations.

Lactation

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

Renal Impairment

Patients with renal impairment should consult a healthcare professional prior to use, particularly if they have a history of kidney disease. It is essential to assess renal function and consider potential dosing adjustments or monitoring requirements based on the degree of impairment.

Hepatic Impairment

Patients with hepatic impairment have not been specifically studied in clinical trials for this medication. Consequently, there is no available information regarding dosage adjustments, special monitoring requirements, or precautions for individuals with compromised liver function. It is recommended that healthcare providers exercise caution when prescribing this medication to patients with hepatic impairment, given the lack of data on its safety and efficacy in this population. Regular monitoring of liver function may be warranted based on clinical judgment.

Overdosage

In the event of an overdose, it is imperative to seek immediate medical assistance. Healthcare professionals are advised to contact a Poison Control Center at 1-800-222-1222 for guidance on managing the situation effectively.

Prompt intervention is crucial to mitigate potential adverse effects associated with an overdose. Symptoms may vary depending on the substance involved, and healthcare providers should be prepared to assess and manage these symptoms as they arise.

Management procedures may include supportive care and symptomatic treatment, tailored to the specific clinical presentation of the patient. Continuous monitoring and evaluation are essential to ensure patient safety and to address any complications that may develop during the course of treatment.

Nonclinical Toxicology

If pregnant or breastfeeding, it is advised to consult a health professional prior to use. No specific non-teratogenic effects have been identified. Additionally, there are no detailed findings related to nonclinical toxicology or animal pharmacology and toxicology available.

Postmarketing Experience

No postmarketing experience details are provided in the insert for ONELAX (Magnesium Citrate).

Patient Counseling

Patients should be advised to seek immediate medical assistance or contact a Poison Control Center at 1-800-222-1222 in the event of an overdose. It is important to inform patients that laxative products should not be used for longer than one week unless specifically directed by a healthcare provider.

Patients should be instructed to discontinue use and consult a doctor if they experience rectal bleeding or if they do not have a bowel movement after using the product, as these symptoms may indicate a serious medical condition. Additionally, patients must be cautioned against exceeding the maximum recommended daily dosage within a 24-hour period.

Healthcare providers should encourage patients to consult with a doctor prior to using the product if they have any of the following conditions: kidney disease, a magnesium-restricted diet, a sodium-restricted diet, stomach pain, nausea, vomiting, or if they have noticed a sudden change in bowel habits lasting more than one week.

Furthermore, patients should be advised to speak with their doctor or pharmacist before using the product if they are currently taking any prescription medications.

Storage and Handling

The product is supplied in a configuration that includes specific NDC numbers, which should be referenced for ordering and inventory purposes.

Storage conditions require the product to be maintained at temperatures between 46ºF and 86ºF (8ºC and 30ºC). It is imperative that the product is not refrigerated, as exposure to cold temperatures may compromise its integrity. Additionally, the product must be protected from excessive heat and freezing to ensure optimal stability and efficacy.

Once the bottle is opened, any unused product should be discarded within 24 hours to prevent degradation and ensure safety. Proper handling and adherence to these storage guidelines are essential for maintaining the quality of the product.

Additional Clinical Information

The medication is administered orally. Clinicians should advise patients who are pregnant or breastfeeding to consult a healthcare professional prior to use. It is essential to keep the medication out of reach of children, and in the event of an overdose, patients should seek medical assistance or contact a Poison Control Center immediately at 1-800-222-1222. No further information is available regarding laboratory tests, abuse potential, or postmarketing experiences.

Drug Information (PDF)

This file contains official product information for Onelax, 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 Onelax, 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.

Learn more in our Editorial Policy

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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.