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Diphenhydramine 12.5 mg/Haloperidol 0.5 mg/Lorazepam 0.5 mg/Metoclopramide 11.82 mg Rectal Suppository

The Diphenhydramine 12.5 mg/Haloperidol 0.5 mg/Lorazepam 0.5 mg/Metoclopramide 11.82 mg Rectal Suppository is a solid dosage form designed for rectal administration. Upon insertion into the rectum, the suppository dissolves or melts, allowing for the local or systemic absorption of its active ingredients. This particular formulation combines four medications, each serving a specific therapeutic purpose.

Diphenhydramine is an antihistamine that can help alleviate allergic reactions and provide sedation. Haloperidol is an antipsychotic used for its antiemetic and calming effects. Lorazepam, a benzodiazepine, is included for its anxiolytic and sedative properties. Lastly, Metoclopramide acts as a prokinetic agent, enhancing gastrointestinal motility and providing antiemetic benefits.

This combination of medications is commonly used to treat conditions such as severe nausea and vomiting, anxiety, agitation, and symptoms associated with allergic reactions. It may also be used in palliative care settings to manage symptoms in patients with terminal illnesses. The rectal route of administration is particularly useful for patients who cannot take medications orally.

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Formula Information

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The Diphenhydramine 12.5 mg/Haloperidol 0.5 mg/Lorazepam 0.5 mg/Metoclopramide 11.82 mg Rectal Suppository is a compounded medication designed to provide relief from various symptoms associated with different disease states. This solid dosage form is specifically created for rectal administration, where it dissolves or melts to release the active ingredients for both local and systemic absorption. The combination of these four medications offers a multi-faceted approach to treatment, targeting symptoms such as nausea, vomiting, anxiety, and allergic reactions.

Diphenhydramine is an antihistamine that can help alleviate allergic reactions and provide sedation. It is beneficial for patients experiencing itching or hives as a result of an allergic response. Haloperidol, an antipsychotic, is effective in reducing agitation and can also help control nausea and vomiting. Lorazepam, a benzodiazepine, is included for its anxiolytic and sedative properties, which can be particularly useful in patients experiencing anxiety or restlessness. Lastly, Metoclopramide is a prokinetic agent that enhances gastrointestinal motility, making it useful in treating gastroparesis and refractory nausea or vomiting.

This combination suppository is often used in palliative care settings to manage symptoms in patients with advanced illness, but it may also be used in other clinical scenarios where these symptoms coexist. The rectal route of administration is particularly advantageous for patients who are unable to take medications orally due to nausea, vomiting, or difficulty swallowing. It is also beneficial when a rapid onset of action is desired or when medications need to be administered to unconscious or uncooperative patients.

It is important for prescribers to consider the potential interactions and contraindications associated with each component of this formulation. For example, caution should be exercised when prescribing this medication to elderly patients or those with certain medical conditions, such as glaucoma, heart disease, or seizure disorders. Additionally, the sedative effects of this combination may impair a patient's ability to operate machinery or perform tasks requiring mental alertness.

Patients and prescribers should be aware that this is a specialized formulation that is compounded based on individual needs and should only be used under the guidance of a healthcare professional. If you have any questions or require further information about this formulation and its suitability for specific patients or disease states, please reach out to us at Bayview Pharmacy. Our team of knowledgeable compounding pharmacists is here to provide support and guidance to ensure safe and effective treatment outcomes.

Drug Interactions

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The combination of diphenhydramine, haloperidol, lorazepam, and metoclopramide in a rectal suppository form is designed to provide symptomatic relief for various conditions, including allergic reactions, nausea and vomiting, agitation, and anxiety. However, this combination of medications can lead to significant drug interactions that both prescribers and patients should be aware of.

Diphenhydramine is an antihistamine that can cause sedation and has anticholinergic effects. When combined with lorazepam, a benzodiazepine that also causes sedation and central nervous system (CNS) depression, there is an increased risk of enhanced sedation, drowsiness, and decreased cognitive function. Patients should be cautioned about operating heavy machinery or driving while using this medication. Additionally, the anticholinergic effects of diphenhydramine can be exacerbated when taken with other anticholinergic drugs, leading to an increased risk of side effects such as dry mouth, urinary retention, constipation, and confusion, particularly in the elderly.

Haloperidol is an antipsychotic medication that can cause extrapyramidal symptoms and has the potential to prolong the QT interval, leading to an increased risk of cardiac arrhythmias. When used in combination with metoclopramide, which also has the potential to affect the QT interval, there is an additive risk of QT prolongation and serious arrhythmias such as Torsades de Pointes. Patients with a history of cardiac conditions or those taking other medications that affect the QT interval should be monitored closely. Furthermore, the combination of haloperidol with CNS depressants like lorazepam can increase the risk of respiratory depression, hypotension, profound sedation, or coma.

Metoclopramide is a prokinetic agent that increases gastrointestinal motility and is used to treat nausea and vomiting. It can interact with other serotonergic medications, increasing the risk of serotonin syndrome, which is a potentially life-threatening condition. Symptoms of serotonin syndrome include confusion, agitation, rapid heart rate, fluctuating blood pressure, increased body temperature, and gastrointestinal symptoms. Patients should be monitored for signs of serotonin syndrome, especially when metoclopramide is used in combination with other serotonergic drugs.

It is also important to note that the absorption of rectal suppositories can be influenced by various factors, including the presence of fecal matter, rectal diseases, and motility disorders. These factors can affect the efficacy and safety of the medication. Patients with rectal disorders should consult with their healthcare provider before using this form of medication.

Due to the complexity of this medication combination, it is crucial for prescribers to review the patient's current medication list for potential interactions and adjust therapy accordingly. Patients should be advised to inform their healthcare provider of all medications they are taking, including over-the-counter drugs and herbal supplements. If you have any questions or require further information regarding this formulation and its use in treating specific disease states, please reach out to us at Bayview Pharmacy.

How Does it Work

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The Diphenhydramine 12.5 mg/Haloperidol 0.5 mg/Lorazepam 0.5 mg/Metoclopramide 11.82 mg Rectal Suppository is a multi-drug compound designed to address various symptoms such as nausea, vomiting, anxiety, and agitation. This solid dosage form is specifically created for rectal administration, where it dissolves or melts to release the active ingredients for both local and systemic absorption.

Diphenhydramine is an antihistamine that works by blocking histamine H1 receptors, which can help alleviate symptoms of allergies and also has sedative properties. In this formulation, it can help to reduce nausea and provide a calming effect. Haloperidol is an antipsychotic medication that works by blocking dopamine receptors in the brain. It is effective in reducing agitation and delirium, particularly in palliative care settings.

Lorazepam is a benzodiazepine that enhances the effect of the neurotransmitter gamma-aminobutyric acid (GABA) at the GABA-A receptor, which results in sedative, anxiolytic (anti-anxiety), and anticonvulsant properties. This can be particularly useful in treating anxiety and restlessness in patients. Metoclopramide is a prokinetic and antiemetic agent that works by blocking dopamine receptors in the chemoreceptor trigger zone and increasing the upper gastrointestinal tract motility, thereby enhancing gastric emptying and reducing the risk of gastroesophageal reflux.

When compounded together in a rectal suppository, these medications can provide a synergistic effect to manage symptoms such as nausea, vomiting, agitation, and anxiety, which may be associated with various medical conditions or treatments, such as chemotherapy or postoperative care. The rectal route is particularly useful when the oral route is compromised or when rapid medication absorption is desired without the first-pass metabolism effect seen with oral medications.

This formulation is typically used in a hospital or hospice care setting and should be prescribed by a healthcare professional familiar with the patient's medical history and current medications to avoid potential drug interactions. If you have any questions or require further information about this formulation, please reach out to us at Bayview Pharmacy. Our team of compounding pharmacists is here to provide the necessary support and guidance.

Other Uses

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The formulation consisting of Diphenhydramine 12.5 mg, Haloperidol 0.5 mg, Lorazepam 0.5 mg, and Metoclopramide 11.82 mg as a rectal suppository is primarily designed for the management of conditions requiring a multifaceted pharmacological approach, such as severe nausea and vomiting, anxiety, psychosis, and insomnia, particularly in palliative care settings. However, beyond these traditional indications, it's important to consider alternative applications for this compound, while also being mindful of the risk-to-benefit ratio in such uses.

Diphenhydramine, an antihistamine with sedative properties, may be used off-label to help manage allergic reactions and provide sedation. Haloperidol, an antipsychotic, can be effective in controlling acute delirium and reducing agitation in non-psychotic patients. Lorazepam, a benzodiazepine, has applications in treating various forms of acute seizures, in addition to its anxiolytic and sedative effects. Metoclopramide, a prokinetic and antiemetic, may also be used in the prevention of postoperative nausea and vomiting or migraine-associated gastroparesis. When combined in a rectal suppository, this medication offers an alternative route for administration when oral intake is compromised, and it can ensure drug delivery when nausea and vomiting preclude oral administration or when the patient is unable or unwilling to swallow tablets.

It's important for both prescribers and patients to recognize that while this combination may have potential uses beyond the primary indications, it should be used with caution. Each active ingredient has its own safety profile, drug interaction spectrum, and side-effect potential, which must be carefully considered and monitored. Special consideration should be given to the cumulative sedative effects when using this suppository, as all four compounds can potentiate sedation. Additionally, each of the components has the potential to interact with other medications and underlying medical conditions, thus necessitating a thorough medication review prior to prescribing.

Due to the complexity and the serious nature of potential side effects, such as extrapyramidal symptoms from haloperidol or respiratory depression with lorazepam, this formulation should be prescribed and supervised by healthcare professionals familiar with these medications. Dose adjustments may be necessary based on patient-specific factors, including age, renal and hepatic function, and concomitant disease states. Off-label use should be approached with particular caution and based on peer-reviewed literature, clinical guidelines, and individual patient assessments.

If there are any questions regarding the off-label uses, potential side effects, dosing, or contraindications of this combination suppository, we encourage both patients and prescribers to reach out to us at Bayview Pharmacy for detailed information and personalized advice. Our experienced team is committed to ensuring that our patients receive the most appropriate and safe pharmacotherapy for their individual needs.

Frequently Asked Questions

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What is Diphenhydramine/Haloperidol/Lorazepam/Metoclopramide Rectal Suppository used for?

This compounded rectal suppository is typically used to address symptoms of nausea, vomiting, anxiety, and allergic reactions. It combines medications that have different but complementary effects, making it useful in settings where multiple symptoms need to be managed simultaneously. However, its specific use will depend on the medical prescription and advice from a healthcare professional.

How do I use these rectal suppositories?

Wash your hands thoroughly before and after handling the suppository. Remove any foil or packaging, and moisten the suppository with water to ease insertion. Lie on your side with your lower leg straightened out and your upper leg bent forward toward your stomach. Gently push the suppository, tapered end first, into your rectum with your finger and hold in place for a few moments to ensure it doesn't come out. It is important to follow your healthcare provider's instructions when using these suppositories.

How does this suppository work?

The suppository is designed to melt at body temperature once inserted into the rectum. As it dissolves, the medication is released locally in the rectal area and then absorbed into your bloodstream. This mode of delivery can be particularly useful if the oral route is compromised or if you need medications to act quickly.

What are the side effects of this compounded suppository?

Side effects can include drowsiness, dizziness, dry mouth, blurred vision, constipation, difficulty urinating, and changes in blood pressure. Because this suppository contains a combination of drugs, the side effects can be varied. It's important to contact a healthcare provider immediately if you experience any severe or concerning symptoms.

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

You should consult with your healthcare provider before using this medication if you are pregnant or breastfeeding. They will evaluate the potential benefits and risks associated with its use, considering the specific details of your health condition and pregnancy.

Will I be able to drive or operate machinery after using this suppository?

Given that this medication combination can cause drowsiness and affect your alertness, you should avoid driving or operating machinery until you fully understand how the suppository affects you.

Can this suppository be used in children?

The use of this medication in children should be under strict medical supervision and is typically determined on a case-by-case basis. Do not administer this suppository to a child without consulting a healthcare professional.

How should I store these suppositories?

Store the suppositories in a cool, dry place away from direct heat and light. They should be kept out of reach of children and pets. Do not store them in the bathroom, as the humidity can affect their stability. Make sure they remain in their original packaging until ready for use, and follow any additional storage instructions provided by your pharmacist or healthcare provider.

What should I do if I miss a dose?

If you miss a dose, administer it as soon as you remember. However, 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. For individual advice, contact your healthcare provider.

Can I drink alcohol while using this suppository?

It is generally not recommended to consume alcohol while using this medication, as alcohol can increase the sedative effects of the drugs in this combination and may increase the risk of side effects. Always check with your healthcare provider before drinking alcohol while on any medication.

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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.
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