Wednesday 7 March 2012

Abbreviations in Prescritption (1 of 7): DOSAGE FORMS (Subscription or Signa)



Abbreviations for Dosage Forms Found in Inscription, Subscription or Signa

amp.
Ampule. A hermetically sealed glass vessel containing a sterile drug solution usually used parenteral administration.  The ampule is broken and the solution drawn into a syringe under aseptic conditions just prior to administration.  Ampules are always single dose units. Vials are glass containers with a rubber stopper through which a hypodermic needle can be inserted to remove its contents.  Vials can be either single use or multiple use depending on whether a bacteriostatic preservative is present in the solution.


cap.
Capsule.   A shell usually made of gelatin that contains the active ingredients in powder or liquid form.  When the capsule is swallowed, the gelatin dissolves in the acid environment of the stomach releasing the material inside.


chart.
A divided powder, powder in a paper.  The drug or drug mixture is wrapped in folded paper.  The patient unfolds the paper and transfers the contents to a tablespoon or a glass and dissolves the contents in water.  This solution is swallowed and washed down with water.


cr., crm.
Cream.  A semisolid preparation containing drug intended  for application to body surfaces like the skin. Creams are heterogenous systems (an oil in water mixture) whose continuous phase is either aqueous or water soluble.  Creams absorb into the skin leaving little oily residue.


elix.
Elixir.  An oral solution containing drug, water, and some alcohol.  When the active ingredients are dissolved exclusively in alcohol the dosage form is called a Spirit.


emul.
Emulsion.  A liquid, heterogenous dosage form in which a liquid oil is usually dispersed in a continuous aqueous phase.  Usually the drug is dissolved in the internal oil phase.  When an emulsion is used topically it is frequently called a lotion.  (Topical lotions may also be called suspensions)
Liq.
A solution
Lot.
A lotion.
pulv.,
A bulk powder.  Applied directly to the skin from the container.
sol.
Solution.  A solution of drug usually in water.  May be taken by mouth or applied to skin depending on indication.


Supp,sup, suppose.,
Suppository.  Firm semisolid dosage forms that are designed to be inserted into a particular body opening. The semisolid vehicle melts at body temperature releasing the incorporated drug into the local body fluids. Rectal and vaginal suppositories are most common.


susp.
Suspension.  A liquid, heterogenous dosage form in which a solid is dispersed in the liquid.  Usually the drug is not dissolved in the dosage form. When the suspension is used topically it is frequently called a lotion.


syr.
Syrup.  A solution that is sweet and highly viscous.


tab.
Tablet.  A compressed tablet of drug and other excipients which can only be manufactured on an industrial scale.  Tablets are designed to break up into fragments when they enter the stomach or other body fluid allowing the drug to come into contact with the fluid, and dissolve.  Tablets are not pills.  Pills are an older type of preparation not commonly used anymore, and have a round shape (exception - colchicine is dispensed as pills).  A Sublingual Tablet (tab SL. or SL) is designed to be dissolved under the tongue.  A sublingually administered drug is intended to be absorbed across the oral mucosa avoiding gastrointestinal-hepatic degradation prior to entry into general circulation (Example Nitroglycerine Sublingual Tablet).  Sublingual tablets should not be swallowed.


Tinc, tr, tinct,
Tincture.  A solution containing a lot of alcohol, although other solvents may be present. Tinctures usually contain drug at high concentrations.


Oint.
Ointment. A semisolid preparation containing drug intended for application to body surfaces like the skin.  Ointments unlike creams are continuous oil based systems. Ointments generally leave an oily residue on the applied surface for a longer time than creams.




To see more abbreviations used in prescription click on the respective links, given below:







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