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Doxofylline (also known as doxophylline) is a phosphodiesterase inhibiting bronchodilator used in the treatment of chronic respiratory diseases such as asthma [1] and COPD. [2] Like theophylline , it is a xanthine derivative.
The first edition of The Merck Manual was published in 1899 by Merck & Co., Inc. for physicians and pharmacists and was titled Merck's Manual of the Materia Medica. [6] [7] The 192 page book which sold for US $1.00, was divided into three sections, Part I ("Materia Medica") was an alphabetical listing of all known compounds thought to be of therapeutic value with uses and doses; Part II ...
The fixed-dose procedure (FDP), proposed in 1992 by the British Toxicology Society, is a method to assess a substance's acute oral toxicity. [ 1 ] [ 2 ] In comparison to the older LD 50 test developed in 1927, this procedure produces similar results while using fewer animals and causing less pain and suffering. [ 3 ]
Percentage solution may refer to: ... "Mass/volume percentage" (or "% m/v") in biology, for mass per unit volume; incorrectly used to denote mass concentration ...
The procedure is to take the child's weight in pounds, divide by 150 lb, and multiply the fractional result by the adult dose to find the equivalent child dosage.For example, if an adult dose of medication calls for 30 mg and the child weighs 30 lb, divide the weight by 150 (30/150) to obtain 1/5 and multiply 1/5 times 30 mg to get 6 mg.
The very ambiguous terms "percent solution" and "percentage solutions" with no other qualifiers, continue to occasionally be encountered. This common usage of % to mean m/v in biology is because of many biological solutions being dilute and water-based, an aqueous solution. Liquid water has a density of approximately 1 g/cm 3 (1 g/mL). Thus 100 ...
A suppository is a dosage form used to deliver medications by insertion into a body orifice (any opening in the body), where it dissolves or melts to exert local or systemic effects. There are three types of suppositories, each to insert into a different sections: rectal suppositories into the rectum , vaginal suppositories into the vagina ...
Threshold dose is the minimum dose of drug that triggers minimal detectable biological effect in an animal. [1] At extremely low doses, biological responses are absent for some of the drugs. The increase in dose above threshold dose induces an increase in the percentage of biological responses. [ 2 ]