Mei An
Mei An Uses, Dosage, Side Effects, Food Interaction and all others data.
Mei An is used to prevent urothelial toxicity associated with oxazaphosphorine, ifosfamide or cyclophosphamide. It acts in the kidney; reacting with thiol groups of urotoxic metabolites (e.g. acrolein) of ifosfamide and cyclophosphamide. It is used as a mucolytic in the management of some respiratory tract conditions e.g. cystic fibrosis where other mucolytics have failed. It acts by reducing the viscosity of pulmonary secretions; the drug's free sulfhydryl group is thought to reduce disulfide linkages of mucoproteins.
| Trade Name | Mei An |
| Availability | Prescription only |
| Generic | Mesna |
| Related Drugs | Mesnex |
| Type | |
| Therapeutic Class | Antidote preparations |
| Manufacturer | |
| Available Country | China |
| Last Updated: | September 19, 2023 at 7:00 am |
Uses
Mei An is a cytoprotective agent used as a prophylactic agent in reducing the incidence of ifosfamide-induced hemorrhagic cystitis.
Dosage
Mei An dosage
Intravenous-Prophylaxis against urothelial toxicity:
- Adult: Refer to individual and local protocol. Dose calculated according to cytotoxic dose. Normally given at a dose ≥cytotoxic dose. Duration of treatment should be as long as cytotoxic treatment; plus the time it takes for concentration of antineoplastic metabolites in urine to fall. Administered either by short (15-30 minutes) or continuous (24 hr) infusion.
- Child: Refer to individual and local protocol. Has been used in children >4 mth.
Oral-Prophylaxis against urothelial toxicity:
- Adult: Refer to individual and local protocol. Dose calculated according to cytotoxic dose. Normally given at a dose ≥cytotoxic dose. Duration of treatment should be as long as cytotoxic treatment; plus the time it takes for concentration of antineoplastic metabolites in urine to fall.
- Child: Refer to individual and local protocol.
Dilute in 50-1000 ml normal saline, 5% dextrose or lactated Ringer's.
Side Effects
Nausea, vomiting, colic, diarrhoea, anorexia, dyspepsia, unpleasant taste, constipation; headache, malaise, fatigue, depression, irritability, somnolence, hyperaesthesia, dizziness, confusion; rash, pruritus, generalised urticaria, alopecia, inj site reactions, flushing; leucopenia, thrombocytopenia, anaemia, granulocytopenia, chest pain, oedema (peripheral, facial and periorbital), hypotension, tachycardia, hypertension, increased heart rate, ST-segment elevation; dyspnoea, coughing, pneumonia, tachypnea; fever; hypocalcaemia; increased sweating; back pain, limb pain, myalgia; increased hepatic enzyme concentrations; pharyngitis; ulceration of mucous membranes. In patients receiving oral and/or IV mesna and were specifically not treated with concurrent cytotoxic therapy: flatulence; rhinitis; rigors; back pain; rash; conjunctivitis; arthralgia. Inhalation: bronchospasm.
Precaution
Protective effect applies only to the urinary tract; pregnancy, lactation. Patients with auto-immune disorders. IV formulation may contain benzyl alcohol as a preservative; avoid in neonates or infants. Instruct patients to seek medical attention if discolouration of urine occurs. During treatment, monitor urine for erythrocytes and haematuria. Maintain adequate hydration in all patients. Patients who vomit within 2 hr of oral dose should repeat dose or receive IV dose.
Mei An Disease Interaction
Pregnancy & Breastfeeding use
Pregnancy Category B. Either animal-reproduction studies have not demonstrated a foetal risk but there are no controlled studies in pregnant women or animal-reproduction studies have shown an adverse effect (other than a decrease in fertility) that was not confirmed in controlled studies in women in the 1st trimester (and there is no evidence of a risk in later trimesters).
Contraindication
Hypersensitivity to thiol-containing compounds.
Storage Condition
Should be stored at 15-30° C.
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