GLP-1 Resource Center

What nutrients does Ozempic deplete?

Ozempic does not deplete nutrients the way some medications do. What it does is substantially reduce food intake, and reduced food intake means reduced nutrient intake across the board. The effect is indirect but clinically meaningful.

The mechanism

Semaglutide reduces appetite and slows gastric emptying. Clinical data shows caloric intake can fall by 16 to 39% during treatment. A 2025 joint advisory from four professional societies, published by Mozaffarian and colleagues in Obesity, reported that there has been very little study of how GLP-1 medications affect overall diet quality, protein intake, or micronutrient intake, and that the existing evidence raises clear questions about nutritional adequacy.

The nutrients most affected

B vitamins. B1, B6, B9, and B12 are predominantly obtained through food. When food intake drops significantly, B vitamin status may drop with it. B vitamins play a role in cellular energy production, and low status may contribute to the fatigue many Ozempic users experience.*

Vitamin D. Found primarily in fatty fish, eggs, and fortified dairy, foods often consumed in smaller quantities during GLP-1 treatment. Vitamin D deficiency is already widespread, and reduced food intake adds to that picture.

Zinc. Involved in immune function, wound healing, and hair follicle health.* Reduced intake is associated with impaired immune function and can contribute to hair shedding in the context of rapid weight loss.

Iron. Iron deficiency is a known risk during any period of significant caloric restriction, particularly for women. Symptoms overlap with general GLP-1 fatigue: exhaustion, brain fog, and reduced physical capacity.

Magnesium. Involved in over 300 enzymatic reactions.* Low magnesium can contribute to muscle cramps and poor sleep.

Potassium and sodium. Reduced food intake and GI side effects can lower electrolyte levels quickly. Electrolyte imbalance may underlie some of the symptoms GLP-1 patients attribute to the medication itself.

Protein. Across GLP-1 trials the share of weight lost as lean mass depends on the medication: about 26 percent on tirzepatide, and up to 45 percent on semaglutide, with a class-wide average near 30 percent and reported figures ranging from 20 to 50 percent.* In the SURMOUNT-1 DXA substudy the placebo group lost the same ratio as the treatment group, 25 percent against 26 percent, so this is weight loss behaving as weight loss rather than the medication doing something unusual. Fat-free mass measured by DXA includes water, glycogen, and connective tissue, so it is not skeletal muscle alone. Insufficient protein intake may make that shift more pronounced.

Nutrient intake on Ozempic

If you are concerned about your own status, bloodwork ordered by your clinician is the way to find out where you actually stand. Supplementation is a reasonable general measure alongside that, not a substitute for it.

TAKE Complete is formulated for this nutritional context, with 20 vitamins and minerals alongside 15 botanicals.* Paired with TAKE Hydrate, which provides sodium, potassium, calcium, magnesium, and seven B vitamins per serving, it is formulated to support several of these nutrient categories.* TAKE Complete contains saw palmetto and is not suitable during pregnancy, while nursing, or when trying to conceive.

These statements have not been evaluated by the Food and Drug Administration. TAKE products are not intended to diagnose, treat, cure, or prevent any disease. Individual results vary. Always speak with your healthcare provider about medication side effects or medical concerns.