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  • Hyponatremia

    Tolvaptan

    【Product name】Samsca

    [English common name]Tolvaptan

    [Chinese common name]Tolvaptan

    [English name]

    [Chinese other name]

    [indications]This product is used to treat clinically significant high-capacity normal capacityHyponatremia(blood sodium concentration <125mEq/L, or hyponatremia is not obvious but symptomatic and poorly curative effect), includingHeart failure,CirrhosisAnd patients with antidiuretic hormone abnormality syndrome (SIADH).

    【Dosage】
    1, the usual dose for adults
    To evaluate the therapeutic effect of this product, and to correct hyponatremia too quickly can cause osmotic demyelination, resulting in dysarthria, mutism, dysphagia, lethargy, emotional changes, tonic limbs, soft palate, seizures , coma and death, so the patient's initial medication and re-medication should be carried out under hospitalization.
    The usual starting dose of this product is 15mg, once a day, can be taken before and after meals. After taking the medicine for at least 24 hours, the dosage can be increased to 30 mg once a day. According to the serum sodium concentration, the maximum can be increased to 60mg once a day. During the initial dose and dose increase, changes in serum electrolytes and blood volume should be frequently tested and fluid intake should be avoided during the first 24 hours of treatment. Until the patient taking this product, drink even if you are thirsty.
    2, the suspension of drug treatment
    After the patient stops taking this product, the patient should be instructed to re-limit the fluid intake and detect changes in serum sodium concentration and blood volume.
    If the serum sodium level of Boone is properly improved, other treatments should be considered to replace tolvaptan or to add other treatments based on Tobacco. For patients with appropriate improvements in serum sodium levels, their underlying disease and serum sodium levels should be monitored regularly to assess whether further tolvaptan therapy is needed. In the case of hyponatremia, the duration of treatment depends on the underlying disease and its treatment. It is expected that tolvaptan treatment will continue until the underlying disease is properly treated or hyponatremia is no longer a clinical problem.
    3, special people
    This product does not need to be adjusted according to the patient's age, gender, ethnicity, cardiac function, mild or moderate liver function damage.
    Low renal function
    Patients with mild to moderate renal dysfunction (creatinine clearance of 10 to 79 ml/min) do not need to be adjusted because the plasma concentration of tolvaptan does not increase. No assessment has been made of creatinine clearance <10 ml/min or administration of tolvaptan in dialysis patients. It is expected that no benefit will be given to patients who have no urine.
    4. Combination with CYP3A inhibitor, CYP3A inducer and P glycoprotein inhibitor
    CYP3A inhibitor
    Since tolvaptan is metabolized by CYP3A and combined with a potent CYP3A inhibitor, the plasma concentration of tolvaptan can be significantly increased (up to 5 times). The effect of the intermediate-effect CYP3A inhibitor on the exposure to tolvaptan has not been evaluated. Avoid the combined application of this product and intermediate-effect CYP3A enzyme inhibitors.
    CYP3A inducer
    The combination of this product and a potent CYP3A inducer (such as rifampicin) can reduce the plasma concentration of tolvaptan by 85%. Therefore, the expected clinical effect of this product may not be obtained at the recommended dose. The dose should be adjusted according to the patient's reactivity.
    P glycoprotein inhibitor
    Tolvaptan is a substrate for P-glycoprotein. When this product is combined with a P-glycoprotein inhibitor (cyclosporin A, etc.), it is necessary to reduce the amount of this product.

    [Storage] shading, sealed and stored.

    [Tips] Some of the information on this site comes from the Internet and is only used internally by pharmacists or medical staff. It is not a substitute for doctors to diagnose face to face. Please consult a professional pharmacist for specific medications. Please refer to the actual product manual or the actual product for the product content.

  • Hyponatremia

    Konnivatan hydrochloride

    【Product name】Vaprisol, Conivaptan

    [English common name]Conivaptan

    [Chinese common name]Konnivatan hydrochloride

    [English name]Conivaptan hydrochloride

    [Chinese other name]

    [Indications] Cognava hydrochloride is mainly used for normal blood volume.Hyponatremia(often associated with patients with antidiuretic hormone abnormal secretion syndrome,thyroidTreatment of hospitalized patients with hypofunction, patients with adrenal insufficiency or patients with lung disease.

    [Usage and Dosage] Vaprisol (Kaunavatan Hydrochloride Injection) is 4ml: 20mg, generally stored at 15 ~ 30 ° C protected from light (can not be stored in the environment below 15 ° C). Vaprisol can only be administered via the large vein. It is recommended to change the injection site once a day to reduce the possible vascular irritation. Vaprisol can only be diluted with 5% dextrose injection, not for lactated Ringer's injection or saline.
    At the time of loading dose administration, 4 ml: 20 mg, ornidantan hydrochloride injection, was added and administered to 100 ml of 5% dextrose injection for at least 30 minutes. At the time of maintenance dosing, 4 ml (20 mg) of cognavadine injection was administered and administered to 250 ml of 5% dextrose injection for 24 hours.

    [Storage] Store at 25 ° C (77 ° F); allowable temperature is 15 – 30 ° C (59 – 86 ° F), room temperature control (according to USP). Do not store below 15 ° C (59 ° F). Ampoules should be stored in cardboard containers protected from light until ready for use.

    [Tips] Some of the information on this site comes from the Internet and is only used internally by pharmacists or medical staff. It is not a substitute for doctors to diagnose face to face. Please consult a professional pharmacist for specific medications. Please refer to the actual product manual or the actual product for the product content.

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