GLP-1 medications like Ozempic, Wegovy, and Mounjaro change how your body absorbs nutrients. Here's exactly what supplements to take, which to avoid, and the timing that matters — based on clinical evidence.
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Check my stack free →When you eat significantly less food, you absorb significantly fewer nutrients. The specific nutrients that become deficient on GLP-1 medications have serious consequences when they drop too low.
Creatine is the most important supplement for GLP-1 users. Over 500 clinical trials support its safety and efficacy for preserving muscle mass during caloric restriction.
No known interaction with semaglutide or tirzepatide. Safe, inexpensive, and the evidence is overwhelming.
GLP-1 medications suppress appetite so effectively that hitting protein targets through food alone becomes very difficult. Minimum: 1.2g protein per kg of body weight during weight loss.
Whey protein has the best evidence for muscle preservation. Pea protein is a viable alternative.
Standard cyanocobalamin B12 relies on intrinsic factor for absorption — the same intrinsic factor GLP-1 medications reduce. Methylcobalamin or sublingual B12 bypasses this mechanism.
Do not rely on a standard multivitamin for B12 on GLP-1 therapy. The dose is too low and the form is typically wrong.
Magnesium bisglycinate absorbs at ~80% vs ~4% for magnesium oxide — the cheap form in most supplements. Bisglycinate also avoids the GI distress that oxide causes, which is critical for GLP-1 users already managing nausea.
Bedtime magnesium improves sleep quality, reduces muscle cramps, and helps with constipation.
Zinc deficiency is one of the primary drivers of hair loss in GLP-1 users — not the medication itself. Replacing zinc often significantly improves or reverses hair thinning.
Important: Do not take zinc and copper together — they compete for absorption. If taking long-term, add 1-2mg copper separately.
Vitamin D3 requires fat for absorption. K2 (as MK-7) directs calcium to bones rather than arteries — particularly important during rapid weight loss when bone density is at risk.
GLP-1 medications slow gastric emptying significantly. Digestive enzymes improve nutrient absorption and reduce bloating — particularly useful in the first months when GI side effects are worst.
Ginger has well-documented anti-nausea properties with multiple clinical trials supporting its use. One of the most evidence-based options for GLP-1 induced nausea — especially after dose escalation.
Enter your GLP-1 medication and current supplements — get instant interaction checking based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature.
Check free → elthio.health/glp1Berberine is marketed as "natural Ozempic" — which is exactly the problem. Combined with actual GLP-1 medications, berberine creates additive blood sugar lowering that can cause dangerous hypoglycemia.
Berberine also inhibits CYP2D6 and CYP3A4 liver enzymes, potentially raising levels of many medications.
Recommendation: Avoid unless specifically directed by your doctor with blood sugar monitoring.Alpha lipoic acid has insulin-sensitizing effects that are additive with GLP-1 medications. Increases hypoglycemia risk in people whose blood sugar is already well-controlled.
Recommendation: Use with caution. Monitor for shakiness, sweating, or confusion after taking.Chromium enhances insulin sensitivity. Additive with GLP-1 medications. Low doses (200mcg) are generally low risk but discuss with your doctor if also on metformin or insulin.
With reduced fat intake and altered gastric emptying, fat-soluble vitamin levels become unpredictable. Vitamin A toxicity is a real risk with high-dose supplementation.
Recommendation: Get levels tested before supplementing. Do not take high-dose fat-soluble vitamins without monitoring.Timing matters more on GLP-1 medications because gastric emptying is significantly slowed. Here is the optimal daily schedule:
Most doctors prescribing GLP-1 medications focus on the medication itself — supplement guidance is frequently overlooked. Bring this list to your next appointment:
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Check my supplements free →Works with Ozempic, Wegovy, Mounjaro, Zepbound, Saxenda, Victoza