This Department of Pharmacology is where Siddha  drugs are primarily subjected to toxicity studies for acute, sub-acute and chronic phases with an objective to study the drugs for toxic effects if any and their influences in different biological systems. As such various experimental pharmacological techniques are being employed for evaluating the different aspects of drug effects/efficacy evaluation. 
	    Since inception this department has undertaken 150 drugs formulation along with several Ayurvedic drugs allotted by the council and several isolates for Caption Srinivasamoorthy Drug Research Institute for Ayurveda, Chennai for pharmacological activities with special reference to toxic effects. At present this department is involved in the pre clinical toxicological and pharmacological studies of Siddha as well as Ayurvedic drugs also. This department has so far carried out more than two hundred pharmacological and toxicity studies such as: Anti-malarial, Hepatoprotectant/ hepato curative, Antipyretic, anti-arthritic, Antifertility Immunomodulatory, anti-inflammatory Anti stress, Anti-ulcerative, Wound healing, Analgesic, Anticonvulsant, Diuretic, Ant diabetic, CNS activity (Rota-rod, cook’s pole climbing apparatus, actophotometer), anticancer, acute toxicity, sub acute toxicity, chronic toxicity, etc.
   		  LABORATORY ANIMAL HOUSE FACILITY:
   		  To cater the need of laboratory animals like albino rats and mice the department has established laboratory animal house in 1973. As per CPCSEA (Committee for the purpose of control and supervision on experiments on animals) guidelines for animal facility, registration (Reg.No.512/01/CPCSEA) had been approved for carrying out the experiments in 2001. The animals are scientifically bred on different scientific lines to provide animals for research with least possible variations. 
   		  
PHARMACOLOGICAL AND TOXICOLOGICAL RESEARCH STUDIES CARRIEDOUT IN CRIS
   		  Acute toxicity : 112
   		  Sub-acute toxicity : 29
   		  Chronic toxicity : 8
   		  Anti-inflammatory : 40
   		  Analgesic : 19
   		  Anti-pyretic : 10
   		  Anti-arthritic : 9
   		  Anti-fertility : 7
   		  Hypoglycaemic : 6
   		  Diuretic : 3
   		  Hypothermic : 3
   		  Hepatoprotective : 4
   		  Nephroprotective : 3
   		  Anti-ulcer : 1
   		  Haemostatic : 1
   		  Anti-fungal : 1
   		  Anti-spasmodic : 1
   		  Oestrogenic :1
   		  LIST OF INSTRUMENTS AVAILABLE IN THE DEPARTMENT:
   		  Electro convulsiometer
   		  Eddy’s Hot plate
   		  Hot air oven
   		  Hot Plate – ordinary
   		  Haemometer
   		  Incubator
   		  Operation table
   		  Digital Plethysmograph
   		  pH meter
   		  Refrigerator
   		  Cook’s Pole climbing Apparatus
   		  Rota-rod Apparatus
   		  Actophotometer
   		  Digital Plethysmometer
   		  ACHIEVEMENTS OF THE DEPARTMENT:
   		  No. of Siddha drugs subjected for various pharmacological studies-150
   		  Experimental pharmacological studies of 777 oil, Triphala, Rasagandhi mezhugu (RGX), SKX, VK2 Laksha, Ayush AC-IV etc.
   		  Herbo-mineral drugs (15) were subjected for experimental pharmacological studies.
   		  Confirmation of nontoxic nature of 11-metalic drugs like mercury and copper subjected for long-term toxicology studies in animals.
   		  Research awards: B.Mukerjee prize by I.P.S. in 1986 and CCRAS Research award in 1991-92.
   		  PCT PROJECT:
   		  Toxicity studied allotted: Acute, Sub-acute and Chronic toxicity
Status of Project: Completed
RCH PROJECT:
	    Toxicity studied allotted: Acute and Sub-acute toxicity
Status of Project: Completed:
IN-HOUSE PROJECT:
Therapeutic efficacy and toxicity studies of Nandhi mezhugu and Cancergajkesari in 7-12 dimethyl benzanthracene (DMBA) induced mammary tumours in rats in collaboration with Department of Pathology, Madras Veterinary College.
   		  Status of Project: completed