Post-Op Diet


The 30 Day Post-Op Liquid Diet (order 1 week prior to surgery)

You will need to order your liquid diet so that you will have it when you get home from surgery. The Relaunch™ website has a Post-Op pack that consists of two containers of medical grade meal replacement. 

In addition to ReLaunch™ protein, you will also need the following vitamins.

  • High Quality Chewable Multivitamin – Take two daily
  • B12 ‐ 2500mcg Sublingual – Take one per week
    • Dissolve 1 tablet or drop (if using liquid product) under tongue daily, or a prescription for Nascobal (a once a week B12 nasal spray) can be called in for you. 
  • Vitamin D3  5000IU daily
  • Vitamin B1 (Thiamine) – 50mg daily

Based on your lab results the nurse will inform you if you need to take:

  • Calcium Citrate Chewable ‐ 500mg – 1 three times daily for total of 1500mg daily.

AND/OR

  • Iron Chewable – 18mg (men and postmenopausal women) and 27‐45mg daily if premenopausal female. Note: All gastric bypass patients will need to consume at least 36 mg of iron daily.
  • Vitamin C Chewable – 500mg daily – Will need to take this if taking Iron, to help with absorption.

We recommend taking a multivitamin twice daily for the rest of your life.

Note: These are general guidelines. Please consult your doctor and/or dietitian for recommendations tailored to you.

Post-Op Diet for Sleeve Gastrectomy/Gastric Bypass
Stage I:
Full Liquids
Day 1-21

You will need to start this diet the day you come home from the hospital. Following a full liquid diet for the first 3 weeks after surgery will give your body time to heal. This diet will also help you begin to understand how much food you can eat before you feel too full. This is a time of learning new behaviors and developing new lifestyle habits. 1-2 oz. of fluid should be sipped every 10-15 minutes while awake. Try to consume (sip) at least 4 oz. of liquids every hour. All liquids must be very thin. It must be able to flow through a strainer easily. For more information, sample menus and recipe ideas see Post-Op Guidelines Phase 1.

Post-Op Diet for Sleeve Gastrectomy/Gastric Bypass
Stage II:
Soft Solid Foods (3-4 oz per meal)
Day 22-42

Start this diet at Post-Op Day 22 and continue for 3 weeks. This is still time learning about your new body. Let your pouch be your guide on portion sizes. Stop eating before you feel full. Remember overeating can lead to nausea, vomiting, and stretching out your stomach. For more information, sample menus and recipe ideas see Post-Op Guidelines Phase 2.

Post-Op Diet for Gastric Band
Stage I:
Full Liquids
Day 1-21

You will need to start this diet the day you come home from the hospital. Following a full liquid diet for the first 3 weeks after surgery will give your body time to heal. This diet will also help you begin to understand how much food you can eat before you feel too full. This is a time of learning new behaviors and developing new lifestyle habits. 1-2 oz. of fluid should be sipped every 10-15 minutes while awake. Try to consume at least 4 oz. of liquids every hour. It is important to record your intake of fluid to make sure you are consuming at least 60 oz of fluid daily.

Post-Op Diet for Gastric Band
Stage II:
Soft Solid Foods
Day 22-42

This is still time learning about your new body. Let your pouch be your guide on portion sizes. Stop eating before you feel full. Remember overeating can lead to nausea, vomiting, and stretching out your stomach.

Please feel free to contact our office or dietitians with any questions, concerns, or comments.

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