HealthRX.com · Printable supplement log
Magnesium on Wegovy: product, bowel and blood-result log
Write down the magnesium product and the elemental dose on its label, the medicines that change magnesium, and a weekly note of stools, vomiting and cramps. Add each blood result next to the normal range so the prescriber sees the pattern.
Your magnesium product
Product and formglycinate, citrate, oxide or other
Elemental magnesium per dose (mg), from the bottle's label
Doses a day, and when
Other sourceslaxatives or antacids that contain magnesium
Last eGFR or kidney result, if known
Tell the prescriber before starting if any apply
- Kidney disease, or a low eGFR
- A proton pump inhibitor or a diuretic
- Lithium
- Diarrhea or vomiting for more than a few days
- A bisphosphonate, a tetracycline or another medicine taken apart from minerals
- A magnesium-containing laxative or antacid
From MedlinePlus and the Wegovy label
- Normal blood magnesium: 1.7 to 2.2 mg/dL (0.70 to 0.91 mmol/L); ranges vary slightly between labs.[1]
- Daily intake targets: men 400 mg (19 to 30) and 420 mg (31 and older); women 310 mg and 320 mg.[2]
- Proton pump inhibitors and diuretics are among the medicines MedlinePlus lists behind a low level.[1]
- Loss of kidney function and dehydration are among the causes it lists for a high level.[1]
- In Wegovy's adult trials, nausea was reported by 44%, diarrhea by 30% and vomiting by 24% on Wegovy 2.4 mg, against 16%, 16% and 6% on placebo.[3]
Weekly log
| Week of | Wegovy dose | Magnesium taken (mg a day) | Stools: loose, normal or hard | Days with vomiting | Cramps or weakness | Blood magnesium, if tested |
|---|---|---|---|---|---|---|
Call your healthcare provider right away
- Nausea, vomiting or diarrhea that does not go away.[3]
- Severe stomach pain that will not go away, with or without nausea or vomiting: stop Wegovy and call.[3]
Sources for the facts on this sheet
- U.S. National Library of Medicine, MedlinePlus. Magnesium blood test: MedlinePlus Medical Encyclopedia. Accessed 2026-10-19. https://medlineplus.gov/ency/article/003487.htm
- U.S. National Library of Medicine, MedlinePlus. Magnesium in diet: MedlinePlus Medical Encyclopedia. Accessed 2026-10-19. https://medlineplus.gov/ency/article/002423.htm
- Novo Nordisk, via DailyMed. Wegovy (semaglutide) injection, for subcutaneous use, and Wegovy (semaglutide) tablets, for oral use: prescribing information and Medication Guide. Effective 2026-06-18. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=ee06186f-2aa3-4990-a760-757579d8f77b
This sheet records information for a conversation with your prescriber or pharmacist. It does not replace their instructions or the medication's prescribing information.