## Practical Pharmaceutical CalculationsUnderstanding practical pharmaceutical calculations is essential for healthcare professionals. Even simple errors in calculation can have serious - and possibly fatal - consequences. Fully revised and updated, with entirely new chapters and a focus on basic arithmetic, this best-selling practical guide begins by explaining simple units of measurements and expressions of concentration, followed by demonstrations of how straight-forward calculations can be used to estimate individual patient dosages. At the end of each chapter there are self assessment calculations, with fully worked answers - ideal for revision and self-assessment. With the book and free downloads you can always have the guide on hand when you need it most. |

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Nice one

### Contents

The metric system | 15 |

Expressions of concentration | 23 |

Formulae for extemporaneous dispensing | 31 |

Dilution of solutions | 43 |

Incorporation of medicaments into solid preparations | 50 |

Dosage calculations | 59 |

Selfassessment | 66 |

Loading dose | 83 |

Suppositories | 93 |

Summary test | 101 |

Answers to the summary test | 123 |

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### Common terms and phrases

Added weight aminophylline amount of drug Answer arachis oil base required Bioavailability Bioavailability F bismuth subgallate carbamazepine Cl cr coal tar coal tar extract cream containing decimal dextrose Digoxin clearance mL/min dilution displace 1 g displacement value dissolved in 100 dopamine dosage equation Example ﬁnd formula g mould g of dextrose g of sodium g of theobroma g Weight gentamicin grams hydrocortisone ideal body weight Initial weight kilogram L/kg litres loading dose mcg/kg/min mcg/L medicated suppositories mg/L milligrams millilitres millimoles Mixture BP mL of solution mL Water mL/h mmol mmol of potassium multiply percentage pharmacy phenytoin potassium chloride required to prepare salicylic acid Salt fraction serum concentration sodium bicarbonate sodium chloride Solution steps steps 1 Calculate suppositories tablets theobroma oil suppositories theophylline Total weight unmedicated suppositories volume of distribution volume of solution w/v dextrose w/v solution weight of base weight of drug White soft parafﬁn zinc oxide