Rowasa 4gm Kit (7 X 60ml)

Manufacturer MEDA 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
Jul 1987
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DEA Schedule
Not Controlled

Overview

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What is this medicine?

Mesalamine rectal enema is a medicine used to treat inflammation in the lower part of your large intestine (colon) and rectum, a condition called 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 by mouth. You may be using both a tablet or capsule and a rectal product simultaneously.

Continue using this medication as directed by your doctor or healthcare provider, even if you start feeling well. It is recommended to use this medication at bedtime. Before using, make sure you understand the proper administration technique. If you have any questions, consult your doctor or pharmacist.

Administration Instructions

Shake the suspension well before use.
Retain the suspension in your rectum for as long as possible.
Note that the enema may darken slightly over time after opening the foil pouch. It can still be used if the color change is slight. However, do not use it if it turns dark brown. If you are unsure about the enema's usability, consult your doctor or pharmacist.

Storage and Disposal

Store the medication at room temperature.
Keep the rectal suspension in its foil packaging until ready to use. Do not refrigerate.
Protect the rectal suspension from heat.

Missed Dose

If you miss a dose, take it as soon as you remember.
If the next scheduled dose is near, skip the missed dose and resume your regular dosing schedule.
* Do not take two doses at the same time or extra doses.
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Lifestyle & Tips

  • Follow your doctor's instructions regarding diet and other lifestyle modifications for ulcerative colitis.
  • Stay well-hydrated.
  • Administer the enema at bedtime, if possible, and try to retain it for at least 8 hours for best results.
  • Lie on your left side with your lower leg extended and your upper leg flexed forward for easier administration and retention.
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Available Forms & Alternatives

Dosing & Administration

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Adult Dosing

Standard Dose: 4 grams (one 60 mL enema) rectally once daily, preferably at bedtime, and retained for approximately 8 hours.
Dose Range: 4 - 4 mg

Condition-Specific Dosing:

ulcerativeProctitis: 4 grams (one 60 mL enema) rectally once daily, preferably at bedtime, and retained for approximately 8 hours. Treatment duration typically 3-6 weeks.
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Pediatric Dosing

Neonatal: Not established
Infant: Not established
Child: Not established (safety and efficacy not established in pediatric patients for Rowasa enema)
Adolescent: Not established (safety and efficacy not established in pediatric patients for Rowasa enema)
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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 dose if systemic absorption is a concern.
Severe: Contraindicated or not recommended due to increased risk of renal toxicity. Avoid use.
Dialysis: Not recommended. Mesalamine and its metabolites are dialyzable, but risk of toxicity outweighs benefits.

Hepatic Impairment:

Mild: Use with caution; monitor liver function.
Moderate: Use with caution; monitor liver function. No specific dose adjustments provided, but increased monitoring is advised.
Severe: Use with caution; monitor liver function. Not recommended in severe hepatic impairment due to lack of data and potential for systemic accumulation.

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. Its exact mechanism is not fully understood but is believed to involve inhibition of cyclooxygenase and lipoxygenase pathways, thereby reducing the production of prostaglandins and leukotrienes, which are inflammatory mediators. It may also scavenge free radicals and inhibit cytokine production.
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Pharmacokinetics

Absorption:

Bioavailability: Low systemic absorption (approximately 5-30%) from rectal enema, designed for local action.
Tmax: Systemic Tmax for mesalamine and its metabolite (N-acetyl-5-ASA) is variable, typically 4-12 hours after rectal administration, but local effect is immediate.
FoodEffect: Not applicable for rectal enema.

Distribution:

Vd: Not precisely determined for rectal administration due to low systemic absorption. Systemically absorbed mesalamine has a relatively small volume of distribution.
ProteinBinding: Approximately 43% for mesalamine and 78-83% for N-acetyl-5-ASA.
CnssPenetration: Limited

Elimination:

HalfLife: Mesalamine: 0.5-1.5 hours (systemic); N-acetyl-5-ASA: 5-10 hours (systemic). Local half-life in the colon is longer due to retention.
Clearance: Primarily renal clearance of the acetylated metabolite.
ExcretionRoute: Mainly renal excretion of N-acetyl-5-ASA; some fecal excretion of unabsorbed drug.
Unchanged: Less than 10% of systemically absorbed mesalamine is excreted unchanged in urine.
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Pharmacodynamics

OnsetOfAction: Within days to a few weeks for symptomatic relief.
PeakEffect: Typically within 3-6 weeks of continuous use.
DurationOfAction: Local effect persists as long as the drug is retained in the rectum (e.g., 8 hours for enema). Systemic effects are minimal.
Confidence: Medium

Safety & Warnings

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Side Effects

Urgent Side Effects: Seek Medical Help Right Away

Although rare, some people may experience severe and potentially life-threatening side effects while taking this medication. If you notice any of the following symptoms, contact your doctor immediately or seek emergency medical attention:

Signs of an allergic reaction, such as:
+ Rash or hives
+ Itching
+ Red, swollen, blistered, or peeling skin (with or without fever)
+ Wheezing
+ Tightness in the chest or throat
+ Difficulty breathing, swallowing, or talking
+ Unusual hoarseness
+ Swelling of the mouth, face, lips, tongue, or throat
Signs of kidney problems, including:
+ Inability to urinate
+ Changes in urine output
+ Blood in the urine
+ Sudden weight gain
+ Back pain, abdominal pain, or blood in the urine (may indicate a kidney stone)
Chest pain or pressure
Rapid or irregular heartbeat
Fever, chills, or sore throat
Unexplained bruising or bleeding
Feeling extremely tired or weak
Rectal bleeding or pain
Symptoms that may resemble ulcerative colitis, such as:
+ New or worsening stomach pain or cramps
+ Bloody stools
+ Fever
+ Headache
+ Itching
+ Rash
+ Red or pink eyes
+ General feeling of illness
Liver problems, which can be rare but potentially life-threatening, characterized by:
+ Dark urine
+ Fatigue
+ Decreased appetite
+ Nausea or stomach pain
+ Light-colored stools
+ Vomiting
+ Yellow skin or eyes
Heart problems, which can be rare but potentially life-threatening, characterized by:
+ Shortness of breath
+ Sudden weight gain
+ Swelling in the arms or legs
Severe skin reactions, including:
+ Stevens-Johnson syndrome (SJS)
+ Toxic epidermal necrolysis (TEN)
+ Other serious reactions, which can affect body organs and be life-threatening
+ Signs may include:
- Red, swollen, blistered, or peeling skin
- Red or irritated eyes
- Sores in the mouth, throat, nose, eyes, genitals, or skin
- Fever
- Chills
- Body aches
- Shortness of breath
- Swollen glands

Other Possible Side Effects

Like all medications, this drug can cause side effects. Many people may not experience any side effects or only minor ones. However, if you notice any of the following side effects or any other symptoms that concern you, contact your doctor:

Constipation
Diarrhea
Stomach pain
Nausea or vomiting
Heartburn
Gas
Burping
Nose or throat irritation
Dizziness or headache
Back pain
Cough
Rectal irritation

This is not an exhaustive list of possible side effects. If you have questions or concerns about side effects, consult 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:

  • Worsening abdominal pain or rectal bleeding
  • Severe headache
  • Fever, chills, or sore throat (signs of infection or blood problems)
  • Unexplained bruising or bleeding
  • Yellowing of skin or eyes (jaundice), dark urine, or unusual fatigue (signs of liver problems)
  • Swelling in ankles or feet, decreased urine output (signs of kidney problems)
  • New or worsening rash
  • Chest pain or shortness of breath (rare, but possible cardiac 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, its components, or other substances, such as foods or drugs. Be sure to describe the symptoms you experienced.
Existing health conditions, including:
+ Kidney disease or liver disease
+ Stomach or bowel ulcers
+ Narrowing of your stomach valve or other types of stomach blockages
+ Blockages in your urinary tract (consult with your healthcare provider)
Other medications you are taking, including:
+ Prescription and over-the-counter (OTC) drugs
+ Natural products
+ Vitamins
Any health problems you have, as this is not an exhaustive list of potential interactions with this medication.

To ensure your safety, it is crucial to verify that it is safe to take this medication with all your other medications and health conditions. Never start, stop, or change the dose of any medication without first consulting your doctor.
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Precautions & Cautions

Important Information to Share with Your Healthcare Team

Inform all your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are taking this medication. This will help ensure you receive proper care and avoid any potential interactions.

Monitoring Your Health

Follow your doctor's instructions for regular blood tests to monitor your health while taking this medication. Discuss any concerns or questions you have with your doctor.

Lab Tests and Results

Be aware that this medication may affect the results of certain lab tests. Inform all your healthcare providers and lab personnel that you are taking this medication to ensure accurate test results.

Staying Hydrated

Drink plenty of non-caffeinated fluids, unless your doctor advises you to limit your fluid intake.

Sulfite Allergy

If you have a sulfite allergy, consult your doctor before taking this medication, as some products may contain sulfites.

Urine Color Change

While taking this medication, your urine may turn reddish-brown when it comes into contact with surfaces or water that have been treated with bleach (e.g., toilet water). If you notice this color change, observe your urine flow. Only contact your doctor if your urine is reddish-brown before it comes into contact with any surfaces or water that may have been treated with bleach.

Sun Protection

You may be more susceptible to sunburn while taking this medication. Avoid exposure to sunlight, sunlamps, and tanning beds. Use sunscreen and wear protective clothing and eyewear to minimize your risk of sunburn.

Special Considerations for Older Adults

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

Use in Children

Not all products are suitable for use in children. Consult your doctor before giving this medication to a child. Do not give this medication to children or 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 rare but serious condition that can cause brain and liver damage.

Staining and Discoloration

This medication may stain fabric, flooring, painted surfaces, marble, granite, vinyl, and enamel.

Pregnancy and Breastfeeding

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

Overdose Symptoms:

  • Nausea
  • Vomiting
  • Abdominal pain
  • Headache
  • Drowsiness
  • Vertigo

What to Do:

Overdose with rectal mesalamine is unlikely due to limited systemic absorption. If suspected, seek immediate medical attention or call a poison control center (e.g., 1-800-222-1222). Management is supportive and symptomatic.

Drug Interactions

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Major Interactions

  • Azathioprine
  • Mercaptopurine
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Moderate Interactions

  • NSAIDs (e.g., ibuprofen, naproxen)
  • Nephrotoxic agents (e.g., aminoglycosides, cyclosporine)

Monitoring

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Baseline Monitoring

Renal function (BUN, serum creatinine)

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 (BUN, serum creatinine)

Frequency: Periodically during therapy (e.g., annually or as clinically indicated), especially in patients with pre-existing renal disease or those on concomitant nephrotoxic drugs.

Target: Within normal limits or stable from baseline.

Action Threshold: Significant increase in BUN/creatinine; discontinue mesalamine and investigate.

Liver function tests (ALT, AST, bilirubin)

Frequency: Periodically during therapy (e.g., annually or as clinically indicated).

Target: Within normal limits or stable from baseline.

Action Threshold: Significant elevation (e.g., >3x ULN); discontinue mesalamine and investigate.

Complete Blood Count (CBC) with differential

Frequency: Periodically during therapy (e.g., annually or as clinically indicated), especially if symptoms of blood dyscrasias develop.

Target: Within normal limits.

Action Threshold: Significant decrease in WBC, platelets, or hemoglobin; discontinue mesalamine and investigate.

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Symptom Monitoring

  • Rectal bleeding
  • Abdominal pain
  • Diarrhea
  • Fever
  • Rash
  • Headache
  • Nausea/vomiting
  • Signs of worsening ulcerative colitis
  • Signs of renal impairment (e.g., decreased urine output, edema)
  • Signs of hepatic impairment (e.g., jaundice, dark urine, fatigue)
  • Signs of blood dyscrasias (e.g., unusual bruising/bleeding, persistent sore throat, fever)

Special Patient Groups

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Pregnancy

Mesalamine is generally considered safe for use during pregnancy (Pregnancy Category B). Studies in pregnant women have not shown an increased risk of birth defects or other adverse outcomes. Rectal administration results in minimal systemic absorption, further reducing potential fetal exposure.

Trimester-Specific Risks:

First Trimester: Low risk; no increased risk of major birth defects observed.
Second Trimester: Low risk.
Third Trimester: Low risk; no increased risk of preterm birth or low birth weight observed.
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Lactation

Mesalamine and its metabolite are excreted in breast milk in small amounts. The amount transferred to the infant is generally considered low and unlikely to cause adverse effects. Monitor breastfed infants for diarrhea.

Infant Risk: Low risk (L2). Monitor for diarrhea in breastfed infants.
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Pediatric Use

Safety and efficacy of Rowasa enema have not been established in pediatric patients. Use in children is off-label and should be done under the guidance of a specialist, with careful consideration of dose and monitoring.

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Geriatric Use

Use with caution in elderly patients, as they may have age-related decreases in renal function. Monitor renal function closely. No specific dose adjustment is typically required unless renal impairment is present.

Clinical Information

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Clinical Pearls

  • Rowasa enema is designed for local action in the rectum and distal colon; systemic absorption is minimal.
  • For best results, administer at bedtime and try to retain the enema for at least 8 hours.
  • Patients should be instructed on proper administration technique to ensure maximum retention and efficacy.
  • Mesalamine can rarely cause acute intolerance syndrome, which may mimic a flare of inflammatory bowel disease (e.g., cramping, acute abdominal pain, bloody diarrhea, fever, headache, rash). If this occurs, discontinue therapy immediately.
  • Rare cases of renal impairment, including minimal change nephropathy and interstitial nephritis, have been reported with mesalamine. Regular monitoring of renal function is important.
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Alternative Therapies

  • Other mesalamine formulations (oral tablets/capsules, suppositories, foam enemas)
  • Corticosteroids (e.g., hydrocortisone rectal foam/enema, oral prednisone)
  • Immunomodulators (e.g., azathioprine, mercaptopurine)
  • Biologic agents (e.g., infliximab, adalimumab, vedolizumab)
  • Janus kinase (JAK) inhibitors (e.g., tofacitinib)
  • Surgery (colectomy) for refractory cases
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Cost & Coverage

Average Cost: Varies widely, typically $100-$300+ per 7-enema kit
Generic Available: Yes
Insurance Coverage: Tier 2 or 3 (for brand), Tier 1 (for generic)
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General Drug Facts

If your symptoms or health issues persist or worsen, it's essential to contact your doctor for further guidance. To ensure your safety, never share your medication with others or take someone else's medication. Some medications may come with an additional patient information leaflet, so be sure to check with your pharmacist for more information. If you have any questions or concerns about your medication, don't hesitate to reach out to your doctor, nurse, pharmacist, or other healthcare provider. In the event of a suspected overdose, immediately call your local poison control center or seek medical attention. When seeking help, be prepared to provide details about the medication, including the amount taken and the time it happened, to ensure you receive the best possible care.