| 摘要 |
Prepn. of a tablet contg. a bisphosphonic acid deriv. (BP), comprises (a) forming a mixt. contg. the BP, anhydrous or fast flow lactose, dry binder and disintegrant; (b) opt. adding compression aids, flavours, flavour enhancers, sweeteners, and preservatives; (c) lubricating with a lubricant; and (d) compressing to the desired tablet form. The (BP) are chosen from 4-amino-1-hydroxybutylidene-1,1-bisphosphonic acid; and its N-methyl and N,N-dimethyl analogues, 3-amino-1-hydroxypropylidene-1,1-bisphosphonic acid and its N,N-dimethyl and N-methyl-N-pentyl analogues; 1-hydroxy-2-(3-pyridyl)ethylidene-1,1-bisphosphonic acid and 4-hydroxymethylene-1,1-bisphosphonic acid piperidine; or their salts. More pref. is 4-amino-1-hydroxybutylidene -1,1-bisphosphonic acid (BP-1) partic. as monosodium salt trihydrate (BP-2). The dry binder is microcrystalline cellulose (MC). The disintegrant is modified starch or cellulose polymer, croscarmellose sodium (CC-Na) or a mixt. esp. CC. The lubricant is Mg stearate. Compsn. range is basic BP 0.5-25, lactose 30-70, MC 30-50, CC-Na 0.5-5 and mg stearate 0.1-2, all %. Closer limits, for BP-2 are BP-2 1-25, lactose 40-60, MC 35-45, CC-Na 0.5-2, and Mg stearate 0.1-1 all %.
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