Tanaproma, I had my surgery on April 1st. I sip Water, crystal light, herbal tea, strained cream Soup and Protein shake every 1 - 5 minutes, depend on how I feeling. I drink something every hour, 4 oz - 5 oz per hour. I still have to take gas pills here and there, I get real bad gas and the pills are great. Today I am going to try Beano before my shakes to see if that helps.