From common sense, dreaming of her husband swallowing medicine with beer may mean that the dreamer is worried about her husband or uneasy about family relations. Beer and drugs may represent bad habits or health problems, while convulsions may represent mental or emotional stress.
However, dream interpretation is very subjective and needs to be analyzed in detail in combination with the dreamer's personal situation. If the dreamer is confused or worried, it is suggested to communicate with relatives and friends, psychological counselors or professional dream interpreters to help the dreamer better understand and deal with the problems implied in the dream.
For the record, I am not a psychologist. The above explanation is only based on common sense and numerology. If you have further questions about this dream, it is recommended to consult a professional.