Perform LFTs before and during treatment. Increased risk of liver injury in patients >30 yr, female patients especially those on oestrogen therapy, history of liver disease or patients with daily dose >400 mg. Cardiac or pulmonary disorders. Pregnancy.
Lactation: enters breast milk/not recommended
Active liver disease; acute muscle spasm; patients who use their spasticity to maintain posture or function. Lactation.
Dose
N/A
Side Effect
Fatigue, muscle weakness/pain. GI disturbances, CNS effects, tachycardia, unstable BP, dyspnoea, drowsiness, rashes, pruritus, chills and fever, visual disturbances, dysphagia, speech disturbances; haematuria, crystalluria, urinary frequency, retention and incontinence. Increased serum AST (SGOT), ALT (SGPT), alkaline phosphatase, LDH, BUN, and total serum bilirubin concentrations, Difficult erection, Abnormal hair growth, Aplastic anemia, Anemia, Leukopenia, Lymphoma, Thrombocytopenia
Potentially Fatal: Hepatotoxicity, pleural effusion with pericarditis.
Pregnancy Category
Name :
C
Description
Animal reproduction studies have shown an adverse effect on the fetus and there are no adequate and well-controlled studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks
Mode of Action
Dantrolene has a direct action on skeletal muscle. It uncouples muscular contraction from excitation, probably by interfering with calcium release from sarcoplasmic reticulum.
Interaction
CNS depressants; oestrogens; calcium-channel blockers. CNS effects enhanced by alcohol or CNS depressants.
Pregnancy Category Note
Pregnancy Category: C
Lactation: enters breast milk/not recommended
Adult Dose
Oral
Spasticity
Adult: Initially, 25 mg daily increased gradually at 7-day intervals over 7 wk. Discontinue if no response after 45 days of treatment. Max: 100 mg 4 times daily.
Child Dose
Oral
Spasticity
Child: Initially, 0.5 mg/kg once daily, may increase gradually to 2 mg/kg 3-4 times daily. Max: 100 mg 4 times daily.
Renal Dose
N/A
Administration
May be taken with or without food.
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