Question: what could be causing muscle cramps

[Guest guest]

can anyone tell me what chemical or other substance in beer/ wine other than

alcohol could

cause painful muscle cramps in my legs.

i don't drink very often but live in the czech republic where beer is water.

i have noticed that if i get cramp its usually the day after i had a glass of

beer/wine and that

it occurs more often in the summer! i never drink excessive amounts.

any clues would be welcome

Ingrid