Bariatric surgery changes the way your digestive system works. Your body doesn’t remain as efficient in absorbing nutrients as it was before. Regardless of eating a healthy diet, you will still need to take vitamins and minerals supplements for life. It is best to start taking your supplements as soon as you begin eating blended foods.

Why Do You Need Vitamins Or Minerals Supplements?

Once you have undergone bariatric surgery, you can have several health problems due to the lack of some vital nutrients:

  • Anemia due to insufficient iron or vitamin B 12
  • Memory problems, neurological issues, or irritability because your Vitamin B 12 is low
  • Kidney problems and bone issues because your body is no longer processing calcium and vitamin D as earlier

What Are The Most Commonly Recommended Supplements?


After your bariatric surgery, multivitamins are your best friend. In the first few months post-op, you must take the chewable or liquid multivitamin. You must ensure that they have iron, Vitamin B 12, and other vitamins which are essential for a healthy immune system.

Over-the-counter multivitamins are great for using twice daily. You can take one tablet in the morning and once at night. There are several multivitamins available specifically for weight loss surgery patients.

However, it is always best to seek medical advice before choosing a multivitamin. Your doctor or a bariatrician can suggest the most suitable option for you. It’s also because not all supplements are the same, and different surgeries can cause various deficiencies.


A person who has undergone a sleeve gastrectomy or gastric bypass needs 1200 to 1500 milligrams of calcium per day. Someone with a duodenal switch needs 1800 to 2400 milligrams of calcium daily. Nonetheless, your food also contains calcium and if you are eating a calcium-enriched diet, you must adjust your supplements accordingly.

Another tip that you need to keep in mind, divide your calcium supplements into three doses and always take them with your meals. The reason behind this is that our body can absorb only 500-600 mg of calcium at a time, and hence, with meals, your system will absorb calcium better.

Vitamin D3

The standard 3000 IU or 75 micrograms is the daily Vitamin D3 requirement for adults. If your multivitamin doesn’t contain Vitamin D3, you should add Vitamin D3 supplements into the mix and ensure that your daily requirement is met.

Vitamin B 12

A lack of this crucial vitamin can wreak havoc on your body. This is why it’s even more important to keep your vitamin B 12 levels steady.You can take the Vitamin B 12 supplement by putting it under your tongue or by injection.

If you are taking oral supplements, don’t forget to check out its value. 500 micrograms of vitamin B 12 daily is recommended for optimal health.

Although there’s no deniability in the significance of these supplements yet you shouldn’t consume them without a doctor’s recommendation or prescription.

If you are unsure about where to go and who to call, Houston Weight Loss Center is here for you. We offer pre and post-bariatric care including consultation, meal planning, exercise regime, and supplemental advice. So give us a call and book your appointment today!

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