Magnesium works alongside calcium and phosphorus to maintain your hamster's bone structure, supports proper muscle and nerve function, and activates hundreds of enzymes involved in energy metabolism. It helps regulate muscle contractions and prevents cramping, supports heart rhythm, and plays a role in protein synthesis. Seeds and whole grains are naturally good magnesium sources, so hamsters on a varied seed-based diet typically get adequate amounts.
A small pinch of pumpkin seeds (about 1g) provides roughly 5mg of magnesium — your hamster needs approximately 0.06-0.10% magnesium in the diet, about 0.6-1.2mg per day. Seeds, whole grains, and occasional dark leafy greens comfortably meet this need.
0.09% of daily nutrient intake
Magnesium makes up 0.09% of your hamster's total daily nutritional requirements by weight. That's a tiny amount — but it matters.
Muscle tremors, poor growth, reduced appetite, weakness, and irritability. Magnesium deficiency is uncommon in hamsters eating a varied seed-and-grain diet.
Excess magnesium from food sources is rare and well tolerated. The kidneys efficiently excrete surplus magnesium in healthy hamsters.
| Life Stage | Size | Min | Max | Unit | Notes |
|---|---|---|---|---|---|
| Adult | — | 600 | 1000 | mg/kg feed | Approximately 6-12mg per day. Well supplied by seeds and whole grains in a standard hamster diet. |
Source: NRC 1995, general exotic pet veterinary consensus
