·         Prior permission from the institutional ethics committee will be taken and patients will be selected as per the inclusion and exclusion criteria after getting the permission and CTRI registration number. The patients will be informed about the study and the informed consent will be taken. All the treatment will be performed by the principal investigator. Patients within age of 18 and 65 years having maxillary or mandibular single rooted teeth with sharp pain upon thermal stimulus, lingering pain (often 30 seconds or longer after stimulus removal), spontaneity (unprovoked pain) and referred pain, pain that gets accentuated by postural changes and over-the-counter analgesics are typically ineffective with no periapical changes on radiographic examination will be the diagnostic criteria for Symptomatic Irreversible Pulpitis. The participants who met the inclusion criteria will be randomly assigned to 3 groups based on the type of prescribed drug, including by using a table of computer-generated random numbers (www. randomization.com).Group I:- Ketorolac 10 mg (Tab.Ketorol DT) (Dr.Reddy’s Laboratories Ltd)  Group II:- Diclofenac Sodium 100 mg (Tab. Voltaren) (Novarits India Ltd) .Allocation will be concealed by using dark coded envelope containing the drug and will be given to each participant. The envelopes will be opened by an assistant not involved in the study, only when the pill is going to be taken. The participants, the researcher, and the statistician will be blinded to the type of drug. The envelope codes will be only mentioned on the participants’ special information sheets while prescribing. Then, the cold test and EPT will be performed on a tooth with healthy pulp from the contralateral quadrant as well as the adjacent tooth and then on the tooth with SIP. The respective tooth will be dried and isolated by cotton rolls to perform the cold test. Endo-Frost cold spray will be sprayed over a cotton applicator for 3– 5 seconds and immediately placed on the sound buccal surface of the respective tooth for a maximum of 15 seconds. Cold sensitivity will be recorded by a 10 mm visual analogue scale (VAS) (previously instructed to the participants). The participants will be asked to rate their level of pain after the cold test using a VAS with the left end showing no pain at all and the right end indicating maximum imaginable pain. An electric pulp tester will be used for the EPT. For this purpose, the tooth will be isolated with cotton rolls to ensure the accuracy of the EPT readings. The lip clip will be attached to the opposite side of the tooth and the tip of the probe will be placed on the incisal third of the buccal surface after being impregnated with the prophylaxis paste. Then the pulp tester will be turned on and the intensity will be gradually increased. The participants are asked to notify the clinician as soon as they felt pain, burning sensation, or heat. The level displayed by the pulp tester at that moment will be recorded. After pain assessment, the envelopes containing will be given to the participants, and the cold test and EPT will be performed on the same teeth by the same method at 20-minute intervals for 60 minutes. All values will be recorded by the researcher. All tests will be performed on all participants by a single operator.