be enclosed in ampules disposable syringes or multiple dose vials made of glass or plastic pharmaceutical compositions suitable for injection include sterile aqueous solutions for water soluble compounds or dispersions and sterile powders for the extemporaneous preparation of sterile injectable solutions or dispersion for intravenous administration suitable carriers include physiological saline bacteriostatic water cremophor el u2122 basf parsippany n j or phosphate buffered saline pbs in all cases the composition must be sterile and should be fluid for administration using a syringe such compositions should be stable during manufacture and storage and must be preserved against contamination from microorganisms such as bacteria and fungi the carrier can be a solvent or dispersion medium containing for example water ethanol polyol such as glycerol propylene glycol and liquid polyethylene glycol and suitable mixtures proper fluidity can be maintained for example by using a coating such as lecithin by maintaining the required particle size in the case of dispersion and by using surfactants various antibacterial and antifungal agents for example parabens chlorobutanol phenol ascorbic acid and thimerosal may be added isotonic agents for example sugars polyalcohols such as manitol sorbitol and sodium chloride can be included in the composition compositions that can delay absorption include agents such as aluminum monostearate and gelatin sterile injectable solutions can.