Prospective Randomized non inferiority Trial involving adult patients undergoing elective surgery under general anesthesia.56 Patients will be enrolled in 2 groups : full dose sugammadex vs half dose sugammadex for reversal of NMB.

The investigators' aim is to prove that half dose sugammadex in combination with neostigmine 0.05 mg/kg is non-inferior to the recommended dose of sugammadex for the reversal of deep ( absence of Trian of Four response :TOF) or moderate ( TOF 1 or 2 twiches) muscle paralysis in patients undergoing surgery under general anesthesia.

Inclusion Criteria:

• Patients aged 18-70
• ASA class I, II, and III
• undergoing surgery under balanced general anesthesia requiring the use of muscle relaxants throughout the surgery

Exclusion Criteria:

• patients undergoing emergency surgeries
• pregnant patients
• patients with end stage renal disease or chronic kidney disease(GFR less than 60)
• patients with allergy to sugammadex or who had previous complications or side effects from previous sugammadex administration
• patients' refusal
• patients with allergy to recuronium