You are a 48-year-old vegetarian man with:
•
Diabetes (or pre-diabetes)
• Slight obesity
•
Vitamin B12 deficiency
• History of
kidney stones
• History of UTIs
This combination influences supplement choice:
What we want to avoid/limit:
• Excess
calcium supplements (can worsen kidney stones)
• High doses of vitamin C (oxalate risk)
• Supplements with
sugar or unnecessary fillers
What you need:
• Vitamin B12 (deficiency correction)
•
Vitamin D
• Magnesium (often low and helpful for insulin sensitivity)
• Omega-3 fatty acids
• A balanced multivitamin/mineral that does not overload calcium
Multivitamins are supportive but not a substitute for targeted corrections. Given your conditions, customization matters.
Next Steps
A.
Vitamin B12
Preferred form: Methylcobalamin
• Methylcobalamin 1500–2000 mcg daily
(Or 1500 mcg 3–5 days/week)
• If deficiency is severe → initially daily for 8–12 weeks, then rotate to maintenance.
B. Vitamin D3
• 60,000 IU once weekly for 8 weeks, then
• 2000 IU daily after levels normalize.
C. Omega-3 (fish oil)
Choose a product with EPA + DHA 1000–1500 mg daily:
• Nordic Naturals Ultimate Omega
• Viva Naturals Omega-3
• Coromega Omega-3 Squeeze
(If vegetarian: choose algal oil DHA/EPA)
D. Magnesium
• Magnesium glycinate or citrate 200–300 mg at night
Helpful for muscle cramps, insulin sensitivity, sleep.
E. Multivitamin (balanced)
Look for a diabetic-friendly, low-
calcium, low-iron multivitamin:
• Thorne Basic Nutrients 2/Day
• Pure Encapsulations O.N.E. Multivitamin
• Garden of Life mykind Organics Men’s Multi
• GNC Mega Men Once Daily (low
sugar fillers)
These provide broad B-complex, antioxidants, and trace minerals without excess calcium or iron.
Health Tips
Cycle & duration
•
Vitamin B12: Start daily for 2–3 months → then 3–5x/week
• Vitamin D3: Weekly for 8 weeks → then daily maintenance
• Omega-3: Daily ongoing
• Magnesium: Daily (preferably evening)
• Multivitamin: Once daily with food
Kidney stone consideration
• Avoid additional
calcium supplements unless deficiency proven.
• Avoid high doses of vitamin C (>500 mg), which can increase oxalate.
Blood
sugar & safety
• Take supplements after meals to reduce GI upset.
• Monitor blood glucose regularly — some supplements can slightly affect insulin sensitivity.
Interactions
• Omega-3 can slightly thin blood — watch interactions if on aspirin or blood thinners.
• Magnesium can cause loose stools if too high — adjust dose.
⸻
Given your specific health profile (
diabetes, obesity, B12 deficiency, and past stones), you can absolutely benefit from structured supplementation — but the right mix matters more than random picks.
If you want a personalized supplement and diet plan with precise doses based on your labs and medical history, I’d be happy to help you in a brief online consultation so we can tailor it safely and effectively.