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Formulas

Phenobarbital 30 mg Rectal Suppository

The Phenobarbital 30 mg Rectal Suppository is a solid dosage form designed for insertion into the rectum, where it dissolves or melts to release the active medication. This formulation is specifically compounded to provide systemic absorption of phenobarbital, which is a barbiturate used to treat various conditions. Phenobarbital is commonly employed in the management of seizure disorders, including epilepsy, and is also utilized for its sedative and hypnotic properties in the treatment of anxiety or insomnia. Additionally, it may be used in the emergency control of certain acute convulsive episodes. The rectal suppository form is particularly useful when oral administration is not feasible or when a rapid onset of action is desired.

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Formula Information

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Phenobarbital 30 mg Rectal Suppository is a solid dosage form designed for insertion into the rectum, where it dissolves or melts to release the active medication, phenobarbital, for local or systemic absorption. This route of administration is particularly useful when oral administration is not feasible due to vomiting, difficulty swallowing, or the need for rapid medication onset. Phenobarbital is a long-acting barbiturate that exerts its effect by enhancing the activity of gamma-aminobutyric acid (GABA), an inhibitory neurotransmitter in the brain, leading to sedation, hypnosis, and anticonvulsant properties.

This formulation is primarily used in the management of seizures and epilepsy. It can be employed in emergency situations for the acute treatment of convulsions or status epilepticus when intravenous access is not available or infeasible. Additionally, it may be used for sedation or as part of the management of withdrawal symptoms in neonates born to mothers who have used barbiturates during pregnancy. The rectal route provides a relatively consistent absorption profile, which is crucial for maintaining therapeutic drug levels, especially in seizure management.

For patients and prescribers considering the use of Phenobarbital 30 mg Rectal Suppository, it is important to understand that while this formulation provides benefits in terms of ease of administration and bypassing gastrointestinal issues, it also requires careful dosing and monitoring due to the potential for systemic side effects and toxicity. These can include drowsiness, respiratory depression, and dependence with long-term use. Monitoring of blood levels may be necessary to ensure therapeutic but not toxic levels. Additionally, abrupt discontinuation should be avoided to prevent withdrawal symptoms.

As compounding pharmacists at Bayview Pharmacy, we are committed to providing high-quality, patient-specific formulations. We ensure that each suppository is compounded to the highest standards, taking into account stability, compatibility, and patient comfort. If you have any questions or require further information about Phenobarbital 30 mg Rectal Suppositories or their appropriate use in specific disease states, please do not hesitate to reach out to us. Our team is here to support both patients and healthcare providers with the necessary information to ensure safe and effective treatment outcomes.

Drug Interactions

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Phenobarbital is a barbiturate that acts as a central nervous system depressant. It is commonly used for the treatment of seizures and may also be used for sedation or to relieve anxiety. When formulated as a 30 mg rectal suppository, phenobarbital is intended for rectal administration, which can be particularly useful in patients who are unable to take medications orally. The suppository form allows for the medication to be absorbed through the rectal mucosa and enter the systemic circulation.

It is important to be aware of potential drug interactions when using phenobarbital, as it can affect the metabolism of many other drugs. Phenobarbital induces hepatic microsomal enzymes, which can lead to an increased metabolism of other medications, potentially reducing their efficacy. For example, phenobarbital can decrease the effectiveness of anticoagulants like warfarin, oral contraceptives, and certain antiepileptic drugs such as lamotrigine and valproic acid. Patients and prescribers should monitor for changes in the effectiveness of these medications and adjust dosages as necessary.

Conversely, phenobarbital's metabolism and elimination can be affected by other drugs. Inhibitors of hepatic enzymes, such as cimetidine and valproic acid, may increase phenobarbital levels and the risk of toxicity. Signs of phenobarbital toxicity include drowsiness, ataxia, and respiratory depression. It is crucial to monitor patients for these symptoms and adjust the phenobarbital dosage accordingly.

Phenobarbital may also interact with other central nervous system depressants, such as alcohol, opioids, and benzodiazepines, leading to additive sedative effects and increased risk of respiratory depression. Patients should be advised to avoid or limit the use of alcohol and other CNS depressants while using phenobarbital suppositories.

Additionally, phenobarbital can decrease the serum levels of certain drugs by increasing their clearance, such as griseofulvin, doxycycline, and corticosteroids. This may necessitate an adjustment in the dosing of these medications when used concurrently with phenobarbital.

It is also important to consider the potential for drug interactions with over-the-counter medications, herbal supplements, and dietary factors. For instance, St. John's Wort may induce the metabolism of phenobarbital, potentially reducing its therapeutic effect. Patients should be encouraged to discuss all medications and supplements they are taking with their healthcare provider to ensure safe and effective use of phenobarbital suppositories.

Given the complexity of drug interactions with phenobarbital, it is essential for both patients and prescribers to work closely with a pharmacist to manage potential interactions. Regular monitoring of drug levels and patient response to therapy can help in adjusting doses and avoiding adverse effects. If you have any questions or concerns regarding the use of phenobarbital 30 mg rectal suppositories or potential drug interactions, please reach out to us at Bayview Pharmacy for further assistance.

How Does it Work

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The Phenobarbital 30 mg Rectal Suppository is a solid dosage form designed to be inserted into the rectum, where it dissolves or melts at body temperature. Upon administration, the suppository base, typically made from substances like cocoa butter or a synthetic substitute, begins to melt or dissolve, allowing the active drug, phenobarbital, to be released into the rectal mucosa. The rectal route is particularly useful when oral administration is not feasible due to vomiting, unconsciousness, or difficulty swallowing.

Phenobarbital is a long-acting barbiturate that exerts its effect by enhancing the activity of gamma-aminobutyric acid (GABA), a neurotransmitter in the brain that inhibits excitatory nerve activity. By increasing GABA-mediated synaptic inhibition, phenobarbital induces sedation, hypnosis, and can prevent seizures. This makes it effective in the treatment of various seizure disorders, including generalized tonic-clonic seizures and focal seizures. It is also used in emergency settings for the acute treatment of convulsions and status epilepticus.

When the suppository is inserted rectally, phenobarbital is absorbed through the rectal mucosa directly into the bloodstream, bypassing the first-pass metabolism in the liver that would occur with oral administration. This can result in more consistent blood levels of the drug. The onset of action for rectal administration is typically slower than intravenous routes but faster than oral administration, making it a suitable option for patients needing steady absorption who cannot take oral medications.

It is important for both patients and prescribers to understand that while rectal administration can provide a convenient alternative to other routes, factors such as rectal content, pH, and circulation can affect drug absorption. Additionally, patients should be counseled on proper suppository insertion techniques to ensure maximum efficacy of the medication. Phenobarbital can cause side effects such as drowsiness, dizziness, and respiratory depression, so it should be used with caution, especially in elderly patients or those with compromised respiratory function.

For any questions regarding the Phenobarbital 30 mg Rectal Suppository, its administration, or its suitability for specific seizure disorders, please reach out to us at Bayview Pharmacy. Our team of compounding pharmacists is here to provide the necessary information and support for both patients and healthcare providers.

Other Uses

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While the primary indication for Phenobarbital 30 mg rectal suppositories is the management of seizures, their rectal administration offers unique advantages that could be of benefit for other uses. Due to the nature of the rectal administration route, these suppositories bypass the first-pass metabolism in the liver, potentially providing an alternative means of administering the drug in patients with compromised digestive systems or for those who cannot take oral medication because of nausea, vomiting, or unconsciousness.

Additionally, rectal administration can also be advantageous in emergency scenarios where intravenous access is not readily available or in pediatric populations who often have difficulty swallowing tablets or capsules. In certain instances, Phenobarbital rectal suppositories may be considered off-label for the control of acute symptoms related to anxiety or to induce sedation due to its central nervous system depressant effects. Moreover, it may serve an adjunct role in palliative care settings, where managing seizures or acute episodes of agitation in terminally ill patients is a priority, and the enteral route is compromised.

However, it is important to note that Phenobarbatol is a barbiturate, a class of drugs with potential for dependence and strict controlled substance regulations; hence, its use should be carefully monitored. The prescribing physician must weigh the benefits against the risks associated with off-label use and consider the pharmacokinetics and pharmacodynamics of Phenobarbital when employing it for alternative indications. Patients and prescribers are encouraged to discuss the full range of therapeutic options to ensure that Phenobarbital rectal suppositories are utilized safely and effectively.

If you have any questions or need further clarification regarding the use of Phenobarbital rectal suppositories, please do not hesitate to reach out to us at Bayview Pharmacy. We are always ready to provide expert advice and support to ensure the best outcomes for our patients and prescribers.

Frequently Asked Questions

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What is a Phenobarbital 30 mg Rectal Suppository?

A Phenobarbital 30 mg Rectal Suppository is a solid dosage form containing 30 milligrams of the active ingredient Phenobarbital. It is designed to be inserted into the rectum, where it will dissolve or melt and release the medication for absorption either locally in the rectal area or into the bloodstream for a systemic effect.

How does this suppository work?

The suppository works by slowly melting or dissolving inside the rectum due to body temperature, which allows Phenobarbital to be released and absorbed through the rectal mucosa. The medication then enters the bloodstream and works to produce its intended effects.

What is Phenobarbital used for?

Phenobarbital is primarily used to control seizures in various types of epilepsy. It may also be used to treat other conditions as determined by a doctor or for its sedative effects.

How should I store Phenobarbital suppositories?

Store Phenobarbital suppositories in a cool, dry place, away from direct heat and light. It is also important to keep them out of reach of children and pets. Do not store them in the bathroom, as humidity can affect the suppositories.

How do I insert a Phenobarbital suppository?

Wash your hands thoroughly before and after insertion. Lie on your side with your lower leg straightened out and your upper leg bent forward toward your stomach. Gently insert the suppository, pointed end first, into your rectum using your finger. Remain lying down for a few minutes and avoid bowel movements for at least an hour to allow the medication to be absorbed.

What are the potential side effects of Phenobarbital suppositories?

Side effects can include drowsiness, dizziness, lightheadedness, headache, nausea, and constipation. If any of these effects persist or worsen, contact your doctor promptly. Serious side effects such as a rash, mouth sores, or signs of infection should be reported to a healthcare provider immediately.

Can I drive or operate machinery after using a Phenobarbital suppository?

Because Phenobarbital can cause drowsiness or dizziness, it's advised to avoid driving, using machinery, or doing anything that requires alertness until you are sure you can perform such activities safely.

Is it safe to use Phenobarbital suppositories during pregnancy?

Phenobarbital can be harmful to an unborn baby. If you are pregnant or plan to become pregnant, discuss the risks and benefits with your doctor before using this medication. Phenobarbital can pass into breast milk, so it is not recommended for nursing mothers.

Can these suppositories be used for children?

Yes, Phenobarbital suppositories can be used for children, but the dose will be different from adults. It is very important to follow the dosage instructions provided by a healthcare professional.

What should I do if I miss a dose?

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

Can I consume alcohol while using Phenobarbital suppositories?

Alcohol may increase the risk of side effects like dizziness and drowsiness. It is advisable to avoid alcohol or use it in moderation when undergoing treatment with Phenobarbital.

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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.