Mesalamine Rectal Susp 7x60ml

Manufacturer ENCUBE ETHICALS Active Ingredient Mesalamine Rectal Enema(me SAL a meen) Pronunciation me SAL a meen
It is used to treat mild to moderate disease at the far end of the colon.It may be given to you for other reasons. Talk with the doctor.
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Drug Class
Anti-inflammatory agent
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Pharmacologic Class
Aminosalicylate
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Pregnancy Category
Category B
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FDA Approved
Oct 1987
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DEA Schedule
Not Controlled

Overview

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What is this medicine?

Mesalamine rectal suspension is a medication used to treat inflammation in the lower part of the large intestine (colon), specifically for conditions like ulcerative proctitis or proctosigmoiditis. It works by reducing inflammation directly where it's needed.
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How to Use This Medicine

Proper Use of This Medication

To use this medication correctly, follow your doctor's instructions and read all the information provided. This medication is designed for rectal use only and should not be taken orally.

You may be prescribed both an oral tablet or capsule and a rectal product to take at the same time. Continue using this medication as directed by your doctor or healthcare provider, even if you start feeling well.

For optimal results, use this medication at bedtime. Make sure you understand how to use it properly. If you have any questions or concerns, consult your doctor or pharmacist.

Before using the suspension, shake it well. Retain the suspension in your rectum for as long as possible.

Note that the enema may darken slightly over time after the foil pouch is opened. It can still be used if the color change is minimal. However, if it turns dark brown, do not use it. If you're unsure about the enema's viability, consult your doctor or pharmacist.

Storage and Disposal

Store this medication at room temperature. Keep the rectal suspension in its foil packaging until you're ready to use it. Do not refrigerate the suspension, and protect it from heat sources.

Missed Dose

If you miss a dose, take it as soon as you remember. However, if it's close to the time for your next scheduled dose, skip the missed dose and resume your regular dosing schedule. Avoid taking two doses at the same time or taking extra doses.
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Lifestyle & Tips

  • Administer at bedtime after a bowel movement for best retention.
  • Lie on your left side with your lower leg extended and your upper leg bent forward for administration, or in the knee-chest position.
  • Remain in position for at least 30 minutes to allow the medication to spread.
  • Try to retain the enema for at least 8 hours (e.g., overnight) for maximum benefit.
  • Follow your doctor's instructions regarding diet and other lifestyle changes for ulcerative colitis.

Dosing & Administration

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Adult Dosing

Standard Dose: 4 g (60 mL) rectally once nightly at bedtime
Dose Range: 4 - 4 mg

Condition-Specific Dosing:

Ulcerative Colitis (distal, proctitis, proctosigmoiditis): 4 g (60 mL) rectally once nightly at bedtime for 3-6 weeks, or until symptoms subside.
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Pediatric Dosing

Neonatal: Not established
Infant: Not established
Child: Not established for rectal suspension; safety and efficacy not established in pediatric patients.
Adolescent: Not established for rectal suspension; safety and efficacy not established in pediatric patients.
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Dose Adjustments

Renal Impairment:

Mild: Use with caution; monitor renal function.
Moderate: Use with caution; monitor renal function. Consider reduced frequency or alternative therapy.
Severe: Contraindicated or not recommended due to risk of renal impairment exacerbation.
Dialysis: Not recommended; consider alternative therapies. Mesalamine and its metabolites are dialyzable.

Hepatic Impairment:

Mild: Use with caution.
Moderate: Use with caution; monitor liver function. Consider reduced frequency or alternative therapy.
Severe: Use with caution; monitor liver function. Not recommended in severe hepatic impairment.

Pharmacology

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Mechanism of Action

Mesalamine (5-aminosalicylic acid, 5-ASA) is thought to exert its anti-inflammatory effects locally in the colon. While the exact mechanism is not fully understood, it is believed to modulate local inflammatory mediators, including leukotrienes and prostaglandins, by inhibiting cyclooxygenase and lipoxygenase pathways. It may also scavenge free radicals and reactive oxygen metabolites, inhibit cytokine production, and modulate immune cell function in the intestinal mucosa.
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Pharmacokinetics

Absorption:

Bioavailability: Approximately 10-30% systemically absorbed from rectal administration, but the primary action is local.
Tmax: Plasma Tmax for 5-ASA is approximately 4-12 hours after rectal administration.
FoodEffect: Not applicable for rectal administration.

Distribution:

Vd: Not extensively studied for rectal administration due to low systemic absorption. Systemically, 5-ASA has a relatively small volume of distribution.
ProteinBinding: Approximately 43% for 5-ASA and 78% for N-acetyl-5-ASA (Ac-5-ASA).
CnssPenetration: Limited

Elimination:

HalfLife: 5-ASA: 0.5-1.5 hours (systemic); Ac-5-ASA: 5-10 hours (systemic). Local half-life in colon is longer.
Clearance: Primarily renal clearance of metabolites and unabsorbed drug.
ExcretionRoute: Mainly renal excretion of Ac-5-ASA and unabsorbed 5-ASA in feces.
Unchanged: Less than 10% of systemically absorbed 5-ASA is excreted unchanged in urine.
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Pharmacodynamics

OnsetOfAction: Clinical improvement typically seen within 3-21 days, with full therapeutic effect often within 3-6 weeks.
PeakEffect: Peak clinical response usually observed within 3-6 weeks of continuous nightly administration.
DurationOfAction: Maintained with continued nightly administration; effects persist as long as treatment continues.

Safety & Warnings

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Side Effects

Urgent Side Effects: Seek Medical Help Right Away

Although rare, this medication can cause severe and potentially life-threatening side effects. If you experience any of the following symptoms, contact your doctor or seek medical attention immediately:

Signs of an allergic reaction: rash, hives, itching, red, swollen, blistered, or peeling skin with or without fever, wheezing, tightness in the chest or throat, trouble breathing, swallowing, or talking, unusual hoarseness, or swelling of the mouth, face, lips, tongue, or throat.
Signs of kidney problems: inability to pass urine, changes in urine output, blood in the urine, or significant weight gain. Back pain, abdominal pain, or blood in the urine may indicate a kidney stone.
Chest pain or pressure, rapid heartbeat, or abnormal heartbeat.
Fever, chills, sore throat, unexplained bruising or bleeding, or feeling extremely tired or weak.
Rectal bleeding or rectal pain.
Symptoms that may resemble ulcerative colitis: new or worsening stomach pain or cramps, bloody stools, fever, headache, itching, rash, red or pink eyes, or general feeling of illness.

Rare but Serious Side Effects

Liver problems: although rare, this medication can cause liver damage, which can be life-threatening. Seek medical help immediately if you experience dark urine, fatigue, decreased appetite, nausea, stomach pain, light-colored stools, vomiting, or yellow skin or eyes.
Heart problems: this medication can cause heart problems, which can be life-threatening. Seek medical help immediately if you experience shortness of breath, significant weight gain, or swelling in the arms or legs.
Severe skin reactions: this medication can cause severe skin reactions, including Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and other serious reactions. These reactions can be life-threatening and may affect other organs. Seek medical help immediately if you experience red, swollen, blistered, or peeling skin; red or irritated eyes; sores in your mouth, throat, nose, eyes, genitals, or skin; fever; chills; body aches; shortness of breath; or swollen glands.

Other Possible Side Effects

Not everyone who takes this medication will experience side effects. However, if you do experience any of the following side effects, contact your doctor or seek medical attention if they bother you or do not go away:

Constipation, diarrhea, stomach pain, nausea, vomiting, or heartburn.
Gas or burping.
Nose or throat irritation.
Dizziness or headache.
Back pain.
Cough.
Rectal irritation.

Reporting Side Effects

This is not an exhaustive list of possible side effects. If you have questions or concerns about side effects, contact your doctor. You can also report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch.
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Seek Immediate Medical Attention If You Experience:

  • Severe abdominal pain, cramping, or bloody diarrhea (may indicate worsening colitis or other serious conditions)
  • New or worsening fever, chills, sore throat (signs of infection or blood problems)
  • Unexplained bleeding or bruising
  • Yellowing of skin or eyes, dark urine, severe nausea/vomiting (signs of liver problems)
  • Swelling in ankles or feet, decreased urination (signs of kidney problems)
  • Chest pain, shortness of breath, palpitations (rare, but serious heart inflammation)
  • New or worsening rash, especially with fever or blistering (hypersensitivity reaction)
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Before Using This Medicine

Before Taking This Medication: Important Information to Share with Your Doctor

It is essential to inform your doctor about the following:

Any allergies you have, including allergies to this medication, other medications, foods, or substances. Be sure to describe the allergic reaction and its symptoms.
Certain health conditions, such as kidney disease or liver disease.
The presence of a stomach or bowel ulcer.
Any narrowing of your stomach valve or other type of stomach blockage.
* If you have a blockage in your urinary tract, consult with your healthcare provider.

This list is not exhaustive, and it is crucial to discuss all your medications (prescription, over-the-counter, natural products, and vitamins) and health problems with your doctor and pharmacist. They will help determine if it is safe to take this medication with your other medications and health conditions. Do not initiate, stop, or modify the dose of any medication without first consulting your doctor.
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Precautions & Cautions

It is essential to inform all your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are taking this medication. Regular blood tests will be necessary, as directed by your doctor, to monitor your condition. Be sure to discuss any concerns or questions with your doctor.

This medication may interfere with certain laboratory tests, so it is crucial to notify all your healthcare providers and laboratory personnel that you are taking this drug.

To stay hydrated, drink plenty of non-caffeinated fluids, unless your doctor advises you to limit your fluid intake. If you have a sulfite allergy, consult with your doctor, as some products may contain sulfites.

While taking this medication, you may notice that your urine turns reddish-brown when it comes into contact with surfaces or water that have been treated with bleach, such as in a toilet. However, if you observe that your urine is reddish-brown before it touches any surfaces or water, contact your doctor.

You may be more susceptible to sunburn while taking this medication. To protect yourself, avoid exposure to the sun, sunlamps, and tanning beds, and use sunscreen and wear protective clothing and eyewear when outdoors.

If you are 65 years or older, use this medication with caution, as you may be more prone to side effects.

Not all products are suitable for children, so consult with your doctor before giving this medication to a child. Additionally, do not give this medication to children and teenagers who have or are recovering from flu symptoms, chickenpox, or other viral infections, as it may increase the risk of Reye's syndrome, a condition that can cause severe brain and liver damage.

Be aware that this medication may stain certain surfaces, including fabric, flooring, painted surfaces, marble, granite, vinyl, and enamel.

If you are pregnant, plan to become pregnant, or are breastfeeding, inform your doctor, as you will need to discuss the potential benefits and risks of this medication to you and your baby.
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Overdose Information

Overdose Symptoms:

  • Nausea
  • Vomiting
  • Abdominal pain
  • Diarrhea
  • Headache
  • Dizziness
  • Tinnitus
  • Confusion
  • Hyperventilation (rare, high systemic absorption)

What to Do:

Seek immediate medical attention or call a poison control center (1-800-222-1222). Treatment is supportive and symptomatic. Gastric lavage or emesis may be considered if oral overdose, but less relevant for rectal. Monitor renal function and fluid/electrolyte balance.

Drug Interactions

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Major Interactions

  • Nephrotoxic agents (e.g., NSAIDs, azathioprine, mercaptopurine): Increased risk of renal adverse reactions.
  • Azathioprine, Mercaptopurine: Increased risk of myelosuppression due to inhibition of thiopurine methyltransferase (TPMT).
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Moderate Interactions

  • Lactulose: May interfere with mesalamine release from oral formulations (less relevant for rectal suspension, but theoretical concern for colonic pH).
  • Furosemide: Potential for increased risk of nephrotoxicity.

Monitoring

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Baseline Monitoring

Renal function (serum creatinine, BUN, urinalysis)

Rationale: To establish baseline and identify pre-existing renal impairment, as mesalamine can cause renal toxicity.

Timing: Prior to initiation of therapy.

Liver function tests (ALT, AST, bilirubin)

Rationale: To establish baseline and identify pre-existing hepatic impairment, as mesalamine can cause hepatotoxicity.

Timing: Prior to initiation of therapy.

Complete Blood Count (CBC) with differential

Rationale: To establish baseline and monitor for blood dyscrasias (e.g., agranulocytosis, aplastic anemia) which are rare but serious adverse effects.

Timing: Prior to initiation of therapy.

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Routine Monitoring

Renal function (serum creatinine, BUN, urinalysis)

Frequency: Periodically during treatment, especially in patients with pre-existing renal disease or those receiving concomitant nephrotoxic drugs. Annually for long-term therapy.

Target: Within normal limits or stable from baseline.

Action Threshold: Significant increase in creatinine, proteinuria, or hematuria warrants investigation and potential discontinuation.

Liver function tests (ALT, AST, bilirubin)

Frequency: Periodically during treatment, especially if symptoms of hepatic dysfunction develop. Annually for long-term therapy.

Target: Within normal limits or stable from baseline.

Action Threshold: Significant elevation warrants investigation and potential discontinuation.

Complete Blood Count (CBC) with differential

Frequency: Periodically during treatment, especially if symptoms of myelosuppression develop. Annually for long-term therapy.

Target: Within normal limits.

Action Threshold: Significant decrease in cell counts (e.g., leukopenia, thrombocytopenia) warrants investigation and potential discontinuation.

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Symptom Monitoring

  • Worsening abdominal pain or cramping
  • Bloody diarrhea
  • Fever
  • Rash
  • Chest pain or shortness of breath (potential pericarditis/myocarditis)
  • Unexplained fatigue, bruising, or bleeding (blood dyscrasias)
  • Dark urine, yellowing of skin/eyes (liver dysfunction)
  • Decreased urine output, swelling (renal dysfunction)

Special Patient Groups

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Pregnancy

Mesalamine is generally considered low risk during pregnancy (Category B). Studies in animals have not shown harm, and human data suggest no increased risk of major birth defects. However, use only if clearly needed and potential benefits outweigh risks.

Trimester-Specific Risks:

First Trimester: No increased risk of major birth defects observed.
Second Trimester: No specific risks identified.
Third Trimester: No specific risks identified. Some reports of renal dysfunction in newborns exposed to mesalamine in utero, particularly with high doses or prolonged exposure, but causality is not definitively established.
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Lactation

Mesalamine and its metabolite are excreted in breast milk in small amounts. Generally considered compatible with breastfeeding (L2). Monitor breastfed infant for diarrhea.

Infant Risk: Low risk. Monitor for signs of diarrhea in the infant. If diarrhea develops, consider discontinuing breastfeeding or the drug.
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Pediatric Use

Safety and efficacy of mesalamine rectal suspension have not been established in pediatric patients. Oral mesalamine formulations are approved for some pediatric indications.

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Geriatric Use

Use with caution in elderly patients, especially those with pre-existing renal or hepatic impairment, due to increased susceptibility to adverse reactions. Start at the lower end of the dosing range and monitor renal function closely.

Clinical Information

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Clinical Pearls

  • Mesalamine rectal suspension is most effective for distal ulcerative colitis (proctitis, proctosigmoiditis) due to its local action.
  • Instruct patients on proper administration technique to ensure maximum retention and efficacy.
  • Advise patients to retain the enema for as long as possible, ideally overnight (at least 8 hours).
  • Patients should be aware of potential for rare but serious adverse effects like renal impairment, hepatotoxicity, and blood dyscrasias, and report any concerning symptoms.
  • Concomitant use with NSAIDs or other nephrotoxic drugs should be approached with caution and increased renal monitoring.
  • Some patients may experience transient rectal irritation or discomfort upon administration.
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Alternative Therapies

  • Oral mesalamine formulations (e.g., tablets, capsules)
  • Corticosteroid enemas or foams (e.g., hydrocortisone, budesonide rectal foam)
  • Oral corticosteroids (for more extensive or severe disease)
  • Immunomodulators (e.g., azathioprine, mercaptopurine)
  • Biologic agents (e.g., infliximab, adalimumab)
  • Janus kinase (JAK) inhibitors (e.g., tofacitinib)
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Cost & Coverage

Average Cost: $100 - $300 per 7x60mL kit
Generic Available: Yes
Insurance Coverage: Tier 2 or 3 (often requires prior authorization for brand, generic usually preferred)
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General Drug Facts

If your symptoms or health condition do not improve or worsen over time, it is essential to contact your doctor for further evaluation and guidance. To ensure safe and effective treatment, never share your medication with others or take someone else's medication. Some medications may have additional patient information leaflets, so it is a good idea to consult with your pharmacist for more information. If you have any questions or concerns about your medication, do not hesitate to discuss them with your doctor, nurse, pharmacist, or other healthcare provider. In the event of a suspected overdose, immediately call your local poison control center or seek emergency medical attention. When seeking help, be prepared to provide detailed information about the overdose, including the medication taken, the amount, and the time it occurred.