Sublingual Semaglutide (generic Ozempic®) now available! Get Started
Dashboard
Formulas

Isoniazid 5 mg/mL Oral Suspension

Isoniazid 5 mg/mL Oral Suspension is a liquid dosage form in which isoniazid is uniformly dispersed throughout a liquid medium, ensuring a homogeneous mixture for administration. This formulation is primarily used in the treatment of tuberculosis, providing an effective means of delivering the medication to patients who may have difficulty swallowing tablets or require precise dosing adjustments.

Want a different strength?
Click the Text Us button below.
To prescribe, you must be a verified prescriber.
To prescribe, you must be in a state where we hold an active out-of-state pharmacy license.
Starting at
Must be E-Prescribed
Get Started
Generate LeafletShow Leaflet
This medication requires a prescription from your doctor
Trusted by 60,357 patients to date.
A group of faces of our past satisfied patients.
A svg symbol of a mortar and pestle with ingredients going in.
Custom made in our compounding labs.
Sliders that show the customization of ingredients.
Personalized treatment for better results.
User with a gear showing the personalization of the formulation.
All strengths and ingredients are tailored to your needs.
This medication is not available at retail pharmacies. It is compounded, and may be more effective at treating you or your patient.
Isoniazid
Suspension
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Loading icon rotating.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.

Dosing Calculator

Get general dosing information for a patient by using this calculator.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Loading icon rotating.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.

Formula Information

A small arrow pointing down

Isoniazid 5 mg/mL Oral Suspension is a liquid formulation of isoniazid, an antibiotic that is highly effective in the treatment and prevention of tuberculosis (TB). This compounded suspension provides a homogeneous mixture, ensuring uniform dosing for patients who may have difficulty swallowing tablets or require precise dosing adjustments.

As a first-line agent against Mycobacterium tuberculosis, isoniazid works by inhibiting the synthesis of mycolic acids, which are essential components of the bacterial cell wall. This action leads to the eventual death of the bacteria, making it a critical medication in both active TB treatment regimens and latent TB infection prophylaxis.

The oral suspension form is particularly beneficial for pediatric patients, elderly patients, or those with swallowing difficulties, as it allows for easier administration and more accurate dose adjustments based on body weight and specific medical needs. The 5 mg/mL concentration facilitates precise dosing, which is essential for maximizing therapeutic effectiveness while minimizing the risk of adverse effects.

For prescribers, it's important to consider that isoniazid therapy may require supplementation with pyridoxine (vitamin B6) to prevent peripheral neuropathy, a known side effect of isoniazid. Monitoring liver function tests is also recommended, as hepatotoxicity is a potential risk, especially in patients with pre-existing liver conditions or those consuming alcohol regularly.

Patients should be counseled on the importance of adhering to the dosing schedule to prevent the development of drug-resistant TB strains. They should also be made aware of potential side effects, such as fatigue, numbness, or tingling in extremities, and advised to report any unusual symptoms to their healthcare provider promptly.

The suspension should be stored in a tightly closed container, away from light and at room temperature, unless otherwise instructed. Shake well before each use to ensure proper distribution of the medication throughout the liquid.

If you have any questions, reach out to us.

Drug Interactions

A small arrow pointing down

Isoniazid 5 mg/mL Oral Suspension is a liquid dosage form designed to provide a homogeneous mixture for administration, ensuring that the active ingredient is uniformly dispersed throughout the liquid medium. This formulation is primarily used in the treatment of tuberculosis and other mycobacterial infections. However, it is crucial for both patients and prescribers to be aware of potential drug interactions that may affect the efficacy and safety of isoniazid therapy.

Isoniazid is known to interact with a variety of medications, which can lead to either increased toxicity or reduced therapeutic effects. One of the most significant interactions is with rifampin, another antitubercular agent. When used concurrently, isoniazid and rifampin can increase the risk of hepatotoxicity. Therefore, liver function should be monitored closely, and patients should be advised to report any symptoms of liver dysfunction, such as jaundice, fatigue, or abdominal pain.

Another important interaction is with phenytoin, an anticonvulsant used to treat seizures. Isoniazid can inhibit the metabolism of phenytoin, leading to increased plasma levels and potential toxicity. Patients on concurrent therapy should have their phenytoin levels monitored, and dose adjustments may be necessary to avoid adverse effects such as nystagmus, ataxia, or confusion.

Isoniazid can also interact with certain antidepressants, particularly selective serotonin reuptake inhibitors (SSRIs) and monoamine oxidase inhibitors (MAOIs). These interactions can lead to increased side effects or reduced efficacy of the antidepressants. It is important for prescribers to evaluate the risk-benefit ratio of concurrent use and consider alternative therapies if necessary.

Additionally, isoniazid may affect the metabolism of certain benzodiazepines, such as diazepam, leading to increased sedation and respiratory depression. Patients should be monitored for signs of excessive sedation, and dose adjustments of the benzodiazepine may be required.

Alcohol consumption should be minimized or avoided during isoniazid therapy, as it can exacerbate the risk of liver damage. Patients should be counseled on the importance of adhering to this recommendation to prevent potential hepatotoxicity.

For patients taking antacids, it is advisable to separate the administration of isoniazid and antacids by at least two hours, as antacids can interfere with the absorption of isoniazid, reducing its effectiveness.

It is essential for healthcare providers to review a patient's complete medication profile, including over-the-counter drugs and supplements, to identify any potential interactions with isoniazid. Patients should be encouraged to communicate openly about all medications they are taking to ensure safe and effective treatment.

If you have any questions or need further information regarding the use of Isoniazid 5 mg/mL Oral Suspension and its potential drug interactions, please reach out to us at Bayview Pharmacy. Our team of knowledgeable compounding pharmacists is here to assist you.

How Does it Work

A small arrow pointing down

Isoniazid 5 mg/mL Oral Suspension is a liquid dosage form designed to deliver the active pharmaceutical ingredient, isoniazid, in a homogeneous mixture. This formulation ensures that each milliliter of the suspension contains an exact concentration of 5 mg of isoniazid, providing consistent dosing for patients. The liquid medium allows for the uniform dispersion of isoniazid, making it easier to administer, especially for patients who may have difficulty swallowing tablets or capsules. This is particularly beneficial for pediatric patients or those with swallowing difficulties, ensuring they receive the correct dose without the challenges associated with solid dosage forms.

Isoniazid is an antibiotic that is primarily used in the treatment and prevention of tuberculosis (TB). It works by inhibiting the synthesis of mycolic acids, which are essential components of the mycobacterial cell wall. By disrupting the production of these acids, isoniazid effectively weakens and kills the bacteria responsible for tuberculosis. This mechanism of action makes isoniazid a critical component in the treatment regimen for TB, often used in combination with other antitubercular drugs to prevent the development of drug-resistant strains of the bacteria.

The oral suspension form of isoniazid provides several advantages in the treatment of tuberculosis. The liquid form allows for flexible dosing, which can be easily adjusted based on the patient's age, weight, and specific medical needs. This is particularly important in pediatric cases, where precise dosing is crucial for both efficacy and safety. Additionally, the suspension form can improve patient adherence to the treatment regimen, as it is often more palatable and easier to ingest than solid forms.

For prescribers, the isoniazid 5 mg/mL oral suspension offers a reliable and effective option for managing tuberculosis, especially in patients who require tailored dosing or have difficulty with traditional dosage forms. It is important to monitor patients for potential side effects, such as liver toxicity, and to ensure that they adhere to the prescribed treatment plan to achieve the best possible outcomes. Regular follow-up and patient education are essential components of successful tuberculosis management.

If you have any questions about this formulation or its use in treating tuberculosis, please reach out to us at Bayview Pharmacy. Our team of compounding pharmacists is here to provide you with the information and support you need.

Other Uses

A small arrow pointing down

Isoniazid 5 mg/mL Oral Suspension is primarily used for the treatment and prevention of tuberculosis (TB), a serious infectious disease that mainly affects the lungs. However, this formulation may have other potential uses beyond its primary indication. In certain cases, isoniazid may be utilized off-label for the treatment of latent TB infection in individuals who are at high risk of developing active TB, such as those with HIV infection or those who have been in close contact with someone with active TB. Additionally, isoniazid may be considered for use in patients with atypical mycobacterial infections, which are caused by non-tuberculous mycobacteria and can lead to pulmonary and extrapulmonary diseases.

For patients with compromised immune systems or those undergoing immunosuppressive therapy, isoniazid may be prescribed as a prophylactic measure to prevent the reactivation of latent TB. This is particularly important in settings where TB is prevalent or in patients who have previously been exposed to the bacterium. Furthermore, isoniazid has been studied for its potential neuroprotective effects, and while not a standard treatment, it may be considered in certain neurological conditions where mycobacterial infections are suspected to play a role.

It is crucial for both patients and prescribers to be aware of the potential side effects and interactions associated with isoniazid, such as liver toxicity and peripheral neuropathy. Regular monitoring of liver function tests and vitamin B6 supplementation may be recommended to mitigate these risks. As with any medication, the decision to use isoniazid for off-label purposes should be based on a thorough evaluation of the patient's medical history, current health status, and potential benefits versus risks. If you have any questions or need further information about the use of Isoniazid 5 mg/mL Oral Suspension, please reach out to us at Bayview Pharmacy.

Frequently Asked Questions

A small arrow pointing down

What is Isoniazid 5 mg/mL Oral Suspension?

Isoniazid 5 mg/mL Oral Suspension is a liquid dosage form where the active ingredient, Isoniazid, is uniformly dispersed in a liquid medium, creating a homogeneous mixture for easy administration.

What is the purpose of Isoniazid 5 mg/mL Oral Suspension?

This oral suspension is primarily used for the treatment and prevention of tuberculosis (TB) by inhibiting the growth of the bacteria that cause the disease.

How should Isoniazid 5 mg/mL Oral Suspension be stored?

Store the suspension at room temperature, away from direct sunlight and moisture. Ensure the bottle is tightly closed when not in use to maintain its stability and effectiveness.

How is Isoniazid 5 mg/mL Oral Suspension administered?

The suspension should be administered orally, using a proper measuring device to ensure accurate dosing. It is important to follow the healthcare provider's instructions regarding dosage and frequency.

Can Isoniazid 5 mg/mL Oral Suspension be taken with food?

It is generally recommended to take Isoniazid on an empty stomach, either 1 hour before or 2 hours after meals, to enhance absorption. However, if stomach upset occurs, it can be taken with food.

What should I do if I miss a dose of Isoniazid 5 mg/mL Oral Suspension?

If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and resume your regular dosing schedule. Do not double the dose to catch up.

Are there any side effects associated with Isoniazid 5 mg/mL Oral Suspension?

Common side effects may include nausea, vomiting, and mild skin rash. Serious side effects can include liver problems and peripheral neuropathy. Contact your healthcare provider if you experience any severe or persistent symptoms.

Can Isoniazid 5 mg/mL Oral Suspension interact with other medications?

Yes, Isoniazid can interact with certain medications, including antacids, acetaminophen, and some anticonvulsants. It is important to inform your healthcare provider of all medications and supplements you are taking.

Is Isoniazid 5 mg/mL Oral Suspension safe for children?

Isoniazid can be prescribed to children for the treatment and prevention of tuberculosis. The dosage will be determined by the healthcare provider based on the child's weight and medical condition.

What precautions should be taken while using Isoniazid 5 mg/mL Oral Suspension?

Regular monitoring of liver function is recommended during treatment. Avoid alcohol consumption, as it can increase the risk of liver damage. Inform your healthcare provider of any existing medical conditions, especially liver disease or a history of alcoholism.

Related Formulas

Related Products
Formulas and/or material listed are not to be interpreted as a promise, guarantee or claim of therapeutic efficacy or safety. The information contained herein is not intended to replace or substitute for conventional medical care, or encourage its abandonment. Every patient is unique, and formulas should be adjusted to meet their individual needs.

No compounded medications are reviewed by the FDA for safety or efficacy.