Worried about nutrient deficiency on Ozempic or Wegovy?

People on Ozempic most commonly become deficient in vitamin B12, magnesium, vitamin D3, and iron. These gaps open because appetite suppression reduces total food intake and GLP-1 drugs slow gastric emptying - which can reduce absorption. A protocol targeting these four nutrients, plus omega-3 and zinc, covers the deficiency patterns seen most frequently in clinical studies.

Zepbound (tirzepatide) activates both GLP-1 and GIP receptors, but the nutritional consequence is similar to semaglutide: significantly reduced food intake means reduced intake of B12, magnesium, vitamin D3, and iron. Current evidence suggests the same deficiency profile applies to tirzepatide patients as to semaglutide patients. GLP-1 Shield is formulated to support patients on all injectable GLP-1 medications, including Zepbound and Mounjaro.

Foundayo (orforglipron) is the first oral GLP-1 receptor agonist approved for weight loss. Unlike injectable semaglutide or tirzepatide, it is a small-molecule non-peptide - but its effect on appetite and food intake is similar: significantly reduced calorie intake means the same pattern of B12, magnesium, vitamin D3, and iron depletion documented in injectable GLP-1 patients. GLP-1 Shield is formulated to support patients on all GLP-1 medications, including Foundayo and orforglipron.

Hair thinning is commonly reported among GLP-1 patients. The clinical term is telogen effluvium - a temporary shift in the hair growth cycle triggered by rapid weight loss and the nutritional changes that come with it. Deficiencies in biotin, zinc, iron, and protein are the most common contributing factors. In most cases it is temporary and resolves as nutrition is restored and weight stabilises. A supplement protocol addressing these specific gaps - particularly zinc, iron, and biotin - may help shorten the timeline.

GLP-1 medications reduce appetite effectively, but they do not distinguish between fat and muscle when the body is in a calorie deficit. Studies show that a significant proportion of weight lost on GLP-1 drugs can come from lean mass. The evidence-backed approach involves adequate protein intake, resistance training, and targeted supplementation - particularly magnesium and omega-3, which support muscle protein synthesis. See our full breakdown of the muscle loss research.

Berberine has modest evidence for supporting blood sugar regulation, and some patients take it alongside GLP-1 medications. The combination is understudied and both compounds affect glucose metabolism - so combining them without medical guidance carries some risk. More importantly, berberine does not address the nutrient deficiency side of the GLP-1 equation: it does not replace the B12, magnesium, vitamin D, or iron your reduced appetite stops delivering. GLP-1 Shield is built around those specific deficiency patterns - not a general metabolic booster.

Indirectly, yes. GLP-1 medications like Ozempic, Wegovy, and Mounjaro reduce appetite significantly, so patients eat fewer calories and take in fewer vitamins and minerals. Slower gastric emptying can also reduce absorption of B12 and other nutrients. Research shows B12, magnesium, iron, and vitamin D are the most commonly affected.

GLP-1 Shield is a phase-adaptive supplement protocol designed specifically for people on GLP-1 medications. It identifies which nutrients your reduced intake is leaving behind and delivers a targeted formula that changes as your journey progresses - from early titration through deep weight loss and into long-term maintenance.

When you stop a GLP-1 medication, appetite typically rebounds - but the nutrients depleted during treatment do not automatically recover. B12, iron, vitamin D3, and magnesium levels that dropped during reduced food intake remain low unless actively replaced. Research on GLP-1 discontinuation shows that most weight lost during treatment is regained within months, partly because the nutritional foundation was never restored. Maintaining a targeted supplement protocol through and after discontinuation helps protect the gains you made. See our full breakdown of what happens when you stop.

Standard multivitamins are designed for people eating a normal diet. GLP-1 patients face a specific combination of reduced intake plus altered absorption - so the gaps are different in type, size, and timing. GLP-1 Shield is formulated around the deficiency patterns clinically documented in GLP-1 patients, and adapts to your phase rather than delivering a static one-size-fits-all dose.