The Role of 5-Aminolevulinic Acid Fluorescence-Guided Surgery in Head and Neck Cancers: a Pilot Trial

The closure consists of colorless glass vial (Type II, Ph Eur) and bromobutyl-rubber stopper ø 20 mm (Type I, Ph Eur) and flip cap. The powder for oral solution is intended for single (partial) use. To prepare the ready-to-use solution the content of one vial is dissolved in 50 ml of water or apple juice. The concentration of the reconstituted solution is 3%. Gleolan® is administered orally to patients prior to tumor removal by surgery (20 mg/kg BW). The reconstituted solution may be prepared up to 24 hours prior to use if protected from light. It should be given 3 hours (range 3-5 hours) prior to planned induction of anesthesia for surgery, although its effect is present for up to 8-12 hours. This step is critical for an optimal visualization of tumor tissue due to pharmacokinetic properties of Gleolan®.