Leg swelling may be caused by circulation issues, arthritis, nerve compression or neuropathy, or vitamin deficiencies (particularly B12 or D). Leg swelling and electric-shock feelings need to be properly evaluated, therefore you should see a doctor for an examination and blood testing.

Vascular and bone health may benefit from vitamin K2, which is generally safe for heart patients. However, you should speak with your cardiologist before taking any blood thinners, such as warfarin.

Supplementing with magnesium and addressing any vitamin D or calcium deficiencies will typically alleviate severe leg and foot cramps. It's crucial to stretch gently, drink enough of water, and see a doctor about the right medication and dosage.