Hi, I had gone through your question and understand your concerns. I can understand that you are suffering from oesophageal candidiasis which is a fungal infection of the oesophagus.. You have been rightly prescribed syscan (Fluconazole) for ten days. It is an antifungal medication which will help to heal the candidiasis. It would have been great had you mentioned the exact pathology instead of the word gastric . I guess you could be having gastritis , peptic ulcer disease or Gastro-esophageal- reflux disease(GERD). DO not worry. Razo is a proton pump inhibitor which is prescribed quite often. Bevon is a multivitamin capsule. It is absolutely safe to take the two . I would also suggest you to keep in touch with your doctor. He/she can examine you and correlate clinically. Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health.