If she is taking an
Ayurvedic arthritis product daily, I would first obtain the exact brand, ingredients, and dose before adding supplements. Some products may have undeclared ingredients or heavy-metal contamination, so this is not a theoretical concern. The
NCCIH Ayurvedic safety review reports lead exposure concerns with some preparations.
For an otherwise healthy 43-year-old woman with normal renal function, magnesium glycinate is reasonable as a short trial for nocturnal cramps or sleep difficulty, but I would frame it as an adjunct, not arthritis treatment.
Practical trial
- Use magnesium glycinate providing 100 mg elemental magnesium at night for 3 to 7 days.
- If tolerated and sleep/cramps remain problematic, increase to 200 mg elemental magnesium at night.
- Avoid exceeding 350 mg/day elemental magnesium from supplements/medications without a specific clinical reason and monitoring. Confirm the label says elemental magnesium, as “magnesium glycinate 1,000 mg” does not mean 1,000 mg magnesium.
- Stop or reduce if diarrhea, abdominal cramping, nausea, lethargy, or hypotension occur.
Avoid or individualize if eGFR is reduced, there is AKI/CKD, or she uses magnesium-containing antacids/laxatives. Magnesium is renally excreted, and adverse effects include GI cramping and diarrhea. Berek & Novak's Gynecology, section “Magnesium.” Separate magnesium by at least 2 to 4 hours from levothyroxine, oral bisphosphonates, tetracyclines, and quinolones.
For sleep, the expected benefit is uncertain. A recent
systematic review of randomized trials found that evidence remains limited. If the sleep disturbance is pain-driven, nocturnal pain control and confirming whether this is OA, inflammatory arthritis, fibromyalgia, radicular pain, or recurrent cramps will likely matter more than magnesium.
Useful initial checks if symptoms are persistent: medication and herbal-product reconciliation, eGFR/creatinine, calcium, potassium, magnesium if clinically indicated, CBC/CRP or ESR if inflammatory symptoms, TSH, and ferritin if there is an urge to move the legs or possible restless legs syndrome.