Mesnex
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Mesnex
Mesnex Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
Mesnex (mesna) is used to prevent bleeding in the bladder (hemorrhagic cystitis) during chemotherapy with ifosfamide (Ifex). It is detoxifying agent. Some forms of this medication are available in generic form. Common side effects include headache, flushing, dizziness, drowsiness, nausea, vomiting, loss of appetite, diarrhea, constipation, sensitive skin, or flu-like symptoms (e.g., sore throat, fever, chills, shivering, cough, body aches).
The dose of Mesnex is determined by the dose of ifosfamide being given. It is unknown if other medicines will interact with Mesnex. Tell your doctor all prescription or over-the-counter medicines and supplements you use. During pregnancy, Mesnex should be used only when prescribed. It is unknown if this drug passes into breast milk. Since this medication is given with a cancer chemotherapy drug, breast-feeding while using Mesnex is not recommended. Consult your doctor before breast-feeding. Our Mesnex (mesna) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is Patient Information in Detail?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
Mesnex in Detail - Patient Information: Side Effects
Seek emergency medical attention or contact your healthcare provider immediately if you experience any of the following serious side effects:
- an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives); or
- pink or red colored urine.
Other less serious side effects may be more likely to occur. Continue to take mesna, and contact your doctor if you experience any of the following side effects:
- nausea or vomiting;
- decreased appetite;
- stomach pain;
- diarrhea;
- dizziness;
- flushing;
- fever;
- sensitive skin or skin rash;
- paleness of the skin;
- sleepiness;
- coughing or cold symptoms;
- pain, redness, or irritation at the injection site;
- swelling or water retention; or
- low blood pressure.
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.
Read the entire detailed patient monograph for Mesnex (Mesna) »
What is Patient Information Overview?
A concise overview of the drug for the patient or caregiver from First DataBank.
Mesnex Overview - Patient Information: Side Effects
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor immediately if any of these unlikely but serious side effects occur: chest pain, fast heartbeat, swelling ankles/feet, muscle weakness.
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the entire patient information overview for Mesnex (Mesna)»
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Mesnex FDA Prescribing Information: Side Effects
(Adverse Reactions)
SIDE EFFECTS
Mesnex (mesna) adverse reaction data are available from four phase I studies in which single IV bolus doses of 600-1200 mg Mesnex (mesna) Injection without concurrent chemotherapy were administered to a total of 53 subjects and single oral doses of 600-2400 mg of Mesnex (mesna) Tablets were administered to a total of 82 subjects.
The most frequently reported side effects (observed in two or more patients) for patients receiving single doses of Mesnex (mesna) IV were headache, injection site reactions, flushing, dizziness, nausea, vomiting, somnolence, diarrhea, anorexia, fever, pharyngitis, hyperaesthesia, influenza-like symptoms, and coughing. Among patients who received a single 1200-mg dose as an oral solution, rigors, back pain, rash, conjunctivitis, and arthralgia were also reported. In two phase I multiple-dose studies where patients received Mesnex (mesna) Tablets alone or IV Mesnex (mesna) followed by repeated doses of Mesnex (mesna) Tablets, flatulence and rhinitis were reported. In addition, constipation was reported by patients who had received repeated doses of IV Mesnex.
Because mesna is used in combination with ifosfamide or ifosfamide-containing chemotherapy regimens, it is difficult to distinguish the adverse reactions which may be due to Mesnex (mesna) from those caused by the concomitantly administered cytotoxic agents.
Adverse reactions reasonably associated with mesna administered IV and orally in four controlled studies in which patients received ifosfamide or ifosfamide-containing regimens are presented in Table 3.
Table 3: Incidence of Adverse Events and Incidence of Most
Frequently Reported Adverse Events in Controlled Studies
| Mesna Regimen | IV-IV-IV | IV-Oral-Oral |
| N exposed Incidence of AEs |
119 (100.0%) 101 (84.9%) |
119 (100.0%) 106 (89.1%) |
| Most Frequently Reported Adverse Events (Preferred Terms) | ||
| N (%) | N (%) | |
| Nausea | 65 (54.6) | 64 (53.8) |
| Vomiting | 35 (29.4) | 45 (37.8) |
| Constipation | 28 (23.5) | 21 (17.6) |
| Leukopenia | 25 (21.0) | 21 (17.6) |
| Fatigue | 24 (20.2) | 24 (20.2) |
| Fever | 24 (20.2) | 18 (15.1) |
| Anorexia | 21 (17.6) | 19 (16.0) |
| Thrombocytopenia | 21 (17.6) | 16 (13.4) |
| Anemia | 20 (16.8) | 21 (17.6) |
| Granulocytopenia | 16 (13.4) | 15 (12.6) |
| Asthenia | 15 (12.6) | 21 (17.6) |
| Abdominal Pain | 14 (11.8) | 18 (15.1) |
| Alopecia | 12 (10.1) | 13 (10.9) |
| Dyspnea | 11 (9.2) | 11 (9.2) |
| Chest Pain | 10 (8.4) | 9 (7.6) |
| Hypokalemia | 10 (8.4) | 11 (9.2) |
| Diarrhea | 9 (7.6) | 17 (14.3) |
| Dizziness | 9 (7.6) | 5 (4.2) |
| Headache | 9 (7.6) | 13 (10.9) |
| Pain | 9 (7.6) | 10 (8.4) |
| Sweating Increased | 9 (7.6) | 2 (1.7) |
| Back Pain | 8 (6.7) | 6 (5.0) |
| Hematuria* | 8 (6.7) | 7 (5.9) |
| Injection Site Reaction | 8 (6.7) | 10 (8.4) |
| Edema | 8 (6.7) | 9 (7.6) |
| Edema Peripheral | 8 (6.7) | 8 (6.7) |
| Somnolence | 8 (6.7) | 12 (10.1) |
| Anxiety | 7 (5.9) | 4 (3.4) |
| Confusion | 7 (5.9) | 6 (5.0) |
| Face Edema | 6 (5.0) | 5 (4.2) |
| Insomnia | 6 (5.0) | 11 (9.2) |
| Coughing | 5 (4.2) | 10 (8.4) |
| Dyspepsia | 4 (3.4) | 6 (5.0) |
| Hypotension | 4 (3.4) | 6 (5.0) |
| Pallor | 4 (3.4) | 6 (5.0) |
| Dehydration | 3 (2.5) | 7 (5.9) |
| Pneumonia | 2 (1.7) | 8 (6.7) |
| Tachycardia | 1 (0.8) | 7 (5.9) |
| Flushing | 1 (0.8) | 6 (5.0) |
| * All grades | ||
Postmarketing Surveillance
Allergic reactions, decreased platelet counts associated with allergic reactions, hypertension, hypotension, increased heart rate, increased liver enzymes, injection site reactions (including pain and erythema), limb pain, malaise, myal-gia, ST-segment elevation, tachycardia, and tachypnea have been reported as part of postmarketing surveillance.
Read the entire FDA prescribing information for Mesnex (Mesna) »
Additional Mesnex Information
Mesnex - User Reviews
Mesnex User Reviews
Now you can gain knowledge and insight about a drug treatment with Patient Discussions.
Here is a collection of user reviews for the medication Mesnex sorted by most helpful.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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