Specialized Multivitamins Reduce Nutritional Deficiencies 3 Years After Sleeve Gastrectomy

Overview

This study evaluated the long-term effectiveness of specialized multivitamin supplements (WLS Optimum 1.0 and 2.0) compared to standard supplements and non-use in sleeve gastrectomy (SG) patients. Results indicate that specialized supplements mitigate micronutrient deficiencies up to three years post-surgery, despite common poor compliance.

Background

Laparoscopic sleeve gastrectomy (SG) is the most common metabolic surgery worldwide, reducing stomach size and gastric acid production, which can impair micronutrient absorption. Contrary to earlier beliefs, SG patients experience similar long-term nutritional deficiencies as those undergoing Roux-en-Y gastric bypass. Deficiencies in vitamin D, B12, iron, and elevated parathyroid hormone levels have been reported up to five years post-SG. Specialized multivitamin supplements (WLS Optimum) were developed and optimized to address these deficiencies specifically in SG patients.

Data Highlights

Key Findings

• Both versions of the specialized supplement (WLS Optimum 1.0 and 2.0) significantly reduced the prevalence of anemia and improved serum levels of folic acid, vitamin B1, B6, B12, zinc, and phosphate compared to standard multivitamins.
• WLS Optimum 2.0 contained higher doses of key micronutrients and a lower dose of vitamin A, and after 12 months, the vitamin D dose was increased substantially to 75 μg (1500% RDA).
• Despite the intestinal surface area remaining intact after SG, micronutrient deficiencies remain prevalent, underscoring the importance of targeted supplementation.
• Compliance to supplementation regimens was poor over time, with some patients discontinuing use several years post-surgery, which may impact long-term nutritional status.
• Non-users of multivitamin supplements demonstrated higher rates of micronutrient deficiencies compared to users of specialized supplements.
• Additional supplementation such as vitamin B12 injections was used selectively, and data from these patients were excluded from serum concentration analyses to avoid bias.

Clinical Implications

Clinicians should consider prescribing specialized multivitamin supplements tailored to SG patients to effectively reduce micronutrient deficiencies long-term. Monitoring patient compliance and encouraging sustained supplement use beyond the first postoperative year is critical to maintain adequate nutritional status. Adjustments in supplement composition, such as increased vitamin D dosing, may be necessary to address persistent deficiencies.

Conclusion

Specialized multivitamin supplements designed for SG patients effectively mitigate nutritional deficiencies up to three years post-surgery, outperforming standard supplements and non-use. Sustained supplementation and monitoring are essential for optimal long-term outcomes.

References

1. VITAAL I & II Studies -- Evaluation of WLS Optimum Supplements Post-SG