
Vitamin, Mineral and Protein Supplements After Bariatric Surgery
Sleeve gastrectomy involves removing more than ¾ of the stomach and consequently, meeting the recommended daily amounts of vitamins, minerals, fibre and protein is extremely difficult, particularly in the first 12 months following surgery.
This is due to significantly reduced appetite and food intake, as well as a reduction in gastric parietal cells which control PH balance and absorption of iron and vitamin B12. Gastric bypass surgery adds a further layer of nutrient deficiency risk, as it reduces the absorption of a wide range of nutrients from the small intestine.
Specifically Formulated Bariatric Multivitamin and Mineral Supplements
It is therefore essential that patients who have had bariatric surgery take specifically formulated bariatric multivitamin and mineral supplements. These are designed to be easily swallowed and absorbed and meet the micronutrient recommendations for the bariatric population.
They are available in chewable or capsule form; most one per day formulas do not contain adequate calcium and so a separate calcium supplement is required.
Over-the-Counter Multivitamins
Over-the-counter multivitamins are less suitable for bariatric patients, however there are a few brands on the market which can be substituted if required. Your bariatric dietitian will be able to advise you regarding these options.
Additional Supplements
In addition to daily multivitamin and mineral supplements, you may require additional supplements including iron, calcium, vitamin D and vitamin B12, however these should not be taken as a ‘just in case’.
Bi-Annual Reviews
Bariatric patients should have their blood tested every 6 months, followed by a comprehensive dietary and supplement review, so that deficiencies can be corrected and nutrient intake optimised.
These bi-annual review appointments also give our specialist bariatric GP an opportunity to discuss any post-surgery medical issues and assess overall physical and mental wellbeing.
Nutrient Deficiencies
Weight loss surgery can greatly improve health and wellbeing; however, nutrient deficiencies can occur, and lead to tiredness, constipation, muscle loss, hair loss, low mood, dental issues and brittle bones. Therefore, regular, individualised advice regarding fluid intake, fibre intake, macronutrient intake (protein, carbohydrate, fat) and micronutrient intake (vitamins, mineral, trace elements) is essential.
Mercy Bariatrics Perth
Your bariatric team is the best place to seek accurate, up to date, research-based advice. We are here to support you.





