My husband started using marijuana only thing that would relieve the pain in his legs.

I use pure magnesium oil on my hwp and this relieves his cramps and aching. Also use 20 minutes before bedtime to relieve restless legs for myself.

Yes take potassium.

At times I can get really bad muscle cramps with awful pain. I would love some tips on how to relieve it.

I was also advised to take medicines with plain Mineral water as it helps dissolve faster. Leg cramps depending on severity i sometimes get my fiancee to massage my legs with tea tree oil and eucalyptus lotion during which i generally nod off. i found deep and other heating rubs tended to inflame the cramps. And yes 2 litres of water a day and i was also advised 4 cups of coffee a day apparently caffeine is our friend, 2 strong cups in morning one at lunch and one in afternoon or evening depending on your caffeine tolerance with sleeping