Zhewitra, also known as Vardenafil, is a medication primarily used to treat erectile dysfunction. Its effects on mitochondrial membrane potential in neuronal cells have not been extensively studied or reported in scientific literature as of my last update in January 2022. Mitochondrial membrane potential (ΔΨm) is crucial for mitochondrial function and cellular energy production. Changes in ΔΨm can affect various cellular processes, including apoptosis (programmed cell death) and overall cell viability. To determine the specific effects of Zhewitra on ΔΨm in neuronal cells, rigorous experimental studies would be necessary. These studies would typically involve techniques such as fluorescent dye assays (e.g., using JC-1 dye) to measure ΔΨm changes in response to the drug treatment. Without specific experimental data, any statements about the effects of Zhewitra on mitochondrial membrane potential in neuronal cells would be speculative. Therefore, if you are interested in this topic, looking for recent scientific publications or studies conducted after January 2022 would be recommended.