GLP-1 medications like semaglutide (under brand names Ozempic, Wegovy) and tirzepatide (Mounjaro, Zepbound) have become widely used tools for managing weight and blood sugar. They work, but they come with a nutritional trade-off that doesn’t get nearly enough attention.
Because these medications significantly reduce appetite and slow gastric emptying, many users consume far less food than before. Less food means fewer vitamins and minerals, and research is beginning to confirm the consequences. A 2026 review published in Clinical Obesity analyzed six studies involving more than 480,000 adults taking GLP-1 medications and found that vitamin D deficiency, B vitamin deficiency, and iron deficiency were among the most common nutritional problems that emerged during treatment. The researchers concluded that doctors should treat nutritional deficiency as a common consequence of GLP-1 therapy, and not a rare side effect.
If you’re on a GLP-1 medication, knowing the best vitamins to take while on GLP-1 therapy is one of the most important steps you can take to support your long-term health. Let’s take a closer look.
The Best Vitamins to Take While on GLP-1 Therapy
Vitamin D3 and K2 — Vitamin D deficiency was the most frequently identified nutritional problem in the Clinical Obesity review. D3 supports immune function, bone health, and mood regulation, while K2 works alongside D3 to direct calcium to the right places in the body. Together, they form one of the most important nutrient pairings for overall health, and one of the most commonly depleted among GLP-1 users.
B Vitamins — The B vitamin family plays a central role in energy production, nerve health, and blood sugar regulation — all areas that matter especially to people on GLP-1 therapy. B12 in particular is essential for combating the fatigue that often accompanies reduced food intake. A comprehensive array of B vitamins helps ensure your body has the metabolic support it needs, even when caloric intake is lower than usual.
Blood Sugar and Mitochondrial Support — GLP-1 medications are often prescribed in the context of blood sugar management. Nutrients that support mitochondrial function and stable energy production complement that goal by helping your body use the fuel it takes in more efficiently.
Why Essential Boost Max Is a Smart Fit
Essential Boost Max from Lakeview Pharmacy is a comprehensive multivitamin formulated specifically to address the nutritional areas where GLP-1 users are most vulnerable. The formula is built around enhanced vitamin D3 and K2 levels, a full spectrum of B vitamins, and targeted support for blood sugar stability, mitochondrial function, and energy production. For anyone researching the best vitamins to take while on GLP-1 medications, Essential Boost Max checks the right boxes.
As a pharmaceutical-grade supplement, Essential Boost Max is professionally formulated to meet standards that typical retail multivitamins don’t. That means better bioavailability and more consistent results, which matters when your body is already absorbing nutrients under less-than-ideal conditions.
Your Pharmacist Is a Valuable Resource
Navigating supplement choices while on a GLP-1 medication can feel complicated. Our pharmacists are here to help you think through what your body needs based on your specific health history and goals. Whether you have questions about Essential Boost Max, want to explore our full supplement shop, or need help managing your medications through our medication management program, Lakeview Pharmacy is your partner in making GLP-1 therapy work as effectively as possible.
Shop Essential Boost Max online or stop by our Racine location to speak with one of our pharmacists today.