My spouse who is a dep on my ma had flu/cold. he went to dr and has now finished his treatment. he gets cold and shivers, especially in the mornings and evening, which lasts about 30 to 45 minutes and he's okay. please advise if there's any treatment?

Other options: May be residual flu (cough, headache,diarrhea, etc.), but consider bacterial infection (fever), hypothermia (temp below 95 F in which case seek immediate care), hypoactive thyroid (dry skin, fatigue, constipation), or kidney stones (urinary urgency, pain, discoloration, smelly), or hypoglycemia (trembling, sweaty, nausea, weakness). If symptoms persist, review with your doctor.