The effect of two doses of tramadol hydrochloride on fentanyl induced Cough: A double-blinded, randomized, controlled study

Effect of tramadol gargle on postoperative sore throat: A double blinded randomized placebo controlled study

Effect of tramadol as a local anesthetic adjuvant in epidural labor analgesia: Randomized controlled study

Dextromethorphan reduced fentanyl induced cough and stress hormones release. A randomized double blind controlled study

TRAMADOL VERSUS FENTANYL INFUSION DURING ANAESTHESIA; HAEMODYNAMIC EFFECTS, POSTOPERATIVE ANALGESIA AND OUTCOME

Suppression of fentanyl-induced cough. A priming dose of intravenous dexmedetomidine–magnesium sulfate: A double blind, randomized, controlled study

Premedication with Oral Midazolam Suppress Fentanyl- Induced Cough in Children: A Randomized Double-Blind Trial

Anti-shivering effect of intrathecal tramadol versus intravenous tramadol in patients Received spinal anesthesia for lower limb surgery. A randomized controlled clinical trial

Effect of chronic preoperative tramadol abuse on paravertebral block following thoracotomy

Comparison of analgesic and hemodynamic effects of nalbuphine versus fentanyl: a randomized, double-blinded interventional study in patients on cardiopulmonary bypass