Veterinary Drug Handbook (VDH) is the reference veterinarians turn to when they want an independent source of information on the drugs that are used in veterinary medicine today.


Androgen

hormone which produces male sexual characteristics, e.g., testosterone...

 

Anaphylaxis, Anaphylactic shock, Anaphylactoid

Anaphylaxis is a rare, life-threatening, immediate allergic reaction to something ingested or injected. If untreated, it results in shock, respiratory and cardiac failure, and death....

 

Anamnestic response

The body's more rapid hummoral immunity response when it is infected with a pathogen it has encounted before. The memory of immune cells which allows for more rapid and intense production of antibodt the second time a host animal sees an antgen. Also called a secondary immune response....

 

Analgesia

Pain relief. Refers to the absence of pain in the presence of stimuli that would be expected to be painful. In clinical practice we use the term analgesia to mean a reduction in pain....

 

Anaerobic bacteria

Bacteria which only live in an environment in which there is no or little oxygen, e.g. Clostridium tetani which causes tetanus. A bacteria that grows only when oxygen is not present....

 

Anabolic steroid

A type of steroid (not a corticosteroid like prednisone, cortisone, or dexamethasone) which promotes the building of tissues, like muscle....

 

Amylase

Digestive enzyme, produced by the pancreas which breaks down carbohydrates and starches. An enzyme produced by the pancreas that contributes to digestion of food. Lack of amylase results in a large amount of greasy stool being passed....

 

Aminoglycoside

A class of antibiotics which act by interfering with bacterial protein synthesis within the bacteria which results in the death of the bacteria. Antibiotics in this class include gentamicin (Gentocin), kanamycin, neomycin, streptomycin, tobramycin, and amikacin. Many of these antibiotics are not...

 

Allergen

Substance that causes an allergic reaction, e.g., pollen. Any inanimate or living object that creates an allergic reaction in an animal....

 

Alopecia

A loss of hair or baldness. Loss of hair....

 

Alkaline

A substance with very few hydrogen ions, and a pH over 7. Lye is strongly alkaline....

 

Albino

An animal that is completely white because it lacks the ability to make pigment. Its eyes are pale blue or pink....