MATERIA MEDICA AND THERAPEUTICS. 4-1 



Write ingredients in Latin, and usually in the genitive case. 

 When an extraordinary dose is prescribed, underline or put ( !) 

 after quantity. Don't write a prescription from memory ; know 

 the individual dose and action of every drug. 



Abbreviations, words and phrases used in prescription writ- 

 ing: 



5 — means take thou. V. O. S. — Vitello ovi solutus, dis- 



Fiat — make. solved in the yolk of an egg. 



M. — Misce, mix. Div. — divide. 



Et.— means and. Ft. — fiat, make. 



Sig. — Signa, label, or write thus Gtt.— Guttae, drops. 



Numerus — number. Inj. — injectio, an injection. 



O— Octarius, a pint. M. ft. — mistura fiat; let a mixture 



C. or Cong. — Congius, gallon. be made. 



Ter.— thrice. Pil — Pilula; pill. 



Dies. — diem, day. Destil. — Destilla ; distill. 



Q. S. — Quantum sufficiat. Sum- Elect. — Electuarum; an electuary, 



cient quantity. F. pil. — Fiat pilulae, make pills. 



Ad. — add, to make. In. d. — In die.; daily. 



Bene — well. Liq— liquor, a solution. 



q. s. ad. — quantity sufficient to make Pulv. — Pulvis ; powder, 



certain amount. Fl. — fluidus, fluid. 



Q. h. — quaqua-hora, every hour. M. — Misce — mix. 



aa. — ana. Of each. S.— Semis, means half. 



ad lib.— ad libitum. To take at S. S. — Semi or Semissis means one- 

 liberty and as much as desired. half. 



B. I. D. — Bis in die: Twice daily. Cum. — with. 



T. I. D., or T.D.— 3 times daily, Stat.— statim, immediately. 



Ter in die. Cola — strain. 



Q. D. — quatre in die; 4 times daily. Filtra — filter. 



P. ae. — Partes aequales, equal parts. 9 — Scruple. 



Grs— Grains. Dentur. — Give or let be given. 



3— Drachma, dram. D. t. d. No. IV.— Dentur tales doses 



3— Uncia, ounce. No. IV. means: Let four such 



M — Minims. _. doses be given. 



Bol. — Bolus, large pill. 



Remember. Be conservative in the dose. 



1. Prescribe as few remedies as possible. 



2. Prescribe no drug without knowing fully its action and 

 how it acts. 



3. Be careful that your prescription is correct and written 

 plainly. 



4. Be careful of abbreviations. 



5. A maximum dose is the largest dose that it is safe to 

 give. A minimum dose is the smallest dose which will produce 

 the physiological action. If you are not sure of the dose, put 

 down a small quantity instead of a large one ; and always think 

 of antagonists and incompatibles. 



