Slow releace tablets of clarithromycin, and its preparing method
A technology for clarithromycin and sustained-release tablets, which is applied in the field of clarithromycin sustained-release tablets and its preparation, which can solve the problems of large gastrointestinal side effects, achieve small local irritation, reduce the incidence rate, and improve bioavailability Effect
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Embodiment 1
[0025] The plain tablet formula of clarithromycin sustained-release tablets is as follows:
[0026] 500mg
[0027] clarithromycin
[0028] Hydroxypropyl Methyl Cellulose 170mg
[0029] Polyvinylpyrrolidone (K30) 18mg
[0030] Magnesium Stearate 10mg
[0032] Lactose 175mg
[0033] Citric acid 100mg
[0034] The coating formula for clarithromycin sustained-release tablets is as follows:
[0035] Hydroxypropyl Methyl Cellulose 9.8mg
[0036] Propylene Glycol 4mg
[0037] Castor Oil 3.45mg
[0038] Polysorbate-80 3.9mg
[0039] Talc 8.5mg
[0040] Tartrazine 0.35mg
[0041] Titanium dioxide 2.4mg
[0042] The preparation method of above-mentioned clarithromycin sustained-release tablet is as follows:
[0043] 1. Dissolve 18 mg of polyvinylpyrrolidone (K30) in ethanol solution to prepare alcohol solution. Put clarithromycin 500mg, hydroxypropylmethylcellulose (100cp) 170mg, citric acid 100mg, and lactose 175mg that have p...
Embodiment 2
[0047] Changes in blood drug concentration (microgram / ml) after clarithromycin sustained-release tablet (500mg, single) and clarithromycin common tablet (250mg, twice a day) in the patient's oral embodiment 1
[0048] time
[0049] According to the research data, clarithromycin sustained-release tablets ensure sustained and slow release of the drug. Compared with ordinary tablets, the blood concentration is more stable. Higher bioavailability.
Embodiment 3
[0051] The plain tablet formula of clarithromycin sustained-release tablets is as follows:
[0052] 500mg
[0053] clarithromycin
[0054] Hydroxypropyl Methyl Cellulose 230mg
[0055] Polyvinylpyrrolidone (K30) 20mg
[0056] Magnesium Stearate 50mg
[0057] Lactose 225mg
[0058] Citric acid 187.5mg
[0059] The coating formula for clarithromycin sustained-release tablets is as follows:
[0060] Hydroxypropyl Methyl Cellulose 12.5mg
[0061] Propylene Glycol 6mg
[0062] Castor Oil 5mg
[0063] Polysorbate-80 5.25mg
[0064] Talc 6.25mg
[0065]Tartrazine 0.35mg
[0066] Titanium dioxide 2.4mg
[0067] The preparation method of the above-mentioned clarithromycin sustained-release tablet is as in Example 1.
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