Effects of combination of tramadol and sildenafil citrate (Viagra) on hepatic and renal function parameters in Male Albino Rats

Erectile dysfunction, premature ejaculation and pleasure seeking have increased the use of sildenafil citrate, tramadol and their combination by youths who believe these drugs could positively impact their sexual life. Sildenafil citrate and tramadol are metabolized in the liver, and their by-products excreted through the kidneys, making these organs possible targets for toxicity.
Aim: This study evaluates the effects of combination of tramadol and sildenafil citrate on hepatic and renal function parameters in male albino rats.
Methodology: A total of forty-nine (49) male albino rats weighing between 150 to 180g were used for the study. Sildenafil citrate and tramadol were administered to the rats by means of oral gavage for 28 days. The liver enzymes alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were determined using the Reitman-Frankel method. Alkaline phosphatase (ALP) was determined using the Colorimetric endpoint method. Total protein (TP) was determined using the biuret method. Albumin (ALB) was determined using the bromocresol green method. Sodium (Na+), potassium (K+) and chloride (CL-) were determined using ion selective electrode (ISE) method. Bicarbonate (HCO3-) was determined using titrimetric method. Urea was determined using Urease bertholet method. Creatinine was determined using Jaffe-Slot method.
Results: There were no significant differences (P>.05) in the liver enzymes ALT, AST and ALP in all the treatment groups compared to the negative control. Total protein (TP) and albumin (ALB) also showed no significant differences (P>.05) in the groups, compared to the negative control. there were no significant differences (P>.05) in the electrolyte levels in the treatment groups, compared to the negative control. Urea and creatinine levels were also not significantly different (P>.05) in the treatment groups, compared to the negative control.
Conclusion: Administration of sildenafil citrate singularly and in combination with tramadol, at recommended and double doses for 28 days, did not impact the liver and was also non-toxic to the kidneys.