Cheapest right now: $0.57 per gram — Webber Naturals Magnesium Complete Complex 250 mg, 7 Sources of Magnesium, 100 Caplets, He…. $2.11 median of 4 in-stock listings. Updated Aug 26, 2026.
| $/g magnesium ▲ | Dose | Price | Size | Form | Type | Rating | Name |
|---|---|---|---|---|---|---|---|
| $0.57 | 250 mg | $14.27 | 100 caps · 100 srv | Capsules | Complex | 4.7 (748) | Webber Naturals Magnesium Complete Complex 250 mg, 7 Sources of Magnesium, 100 Caplets, Helps Support Muscle, Heart and Bone Health, Vegan |
| ~$1.39 | ~300 mg | $24.99 | 120 caps · 60 srv | Capsules | Complex | 4.6 (232) | Magnesium Supplement 4-in-1 Magnesium Complex for Muscle Relaxation, Bones, Heart, Nerve, Sleep for Women & Men Magnesium Complex Supplement (120) |
| $2.83 | 212 mg | $26.98 | 90 caps · 45 srv | Capsules | Complex | 4.6 (988) | Organika Canadian-Made 8-In-1 Magnesium - 212mg Synergystic Magnesium Complex with Vitamin B6 to Support Muscle Function, Bone Health, Energy, and Cardiovascular Health | 90vcaps, 45 Servings |
| $7.78 | 300 mg | $69.99 | 90 caps · 30 srv | Capsules | Complex | 4.2 (9) | SoulLife Magnesium5X - 5-In-1 Magnesium Complex - For Men & Women - Aids in Heart Health, Muscle Recovery, Sleep Aid & Energy Supplement - 30 Servings/90 Vegetarian Capsules |