Patient's question:
On October 4th, my period came once, but I haven't had it since. On November 18th, I went to the hospital for a check-up, and there were no signs of pregnancy. On November 21st, I took a self-test with a pregnancy test kit, and it was still negative. I had sexual intercourse on November 6th and November 12th. Can the possibility of pregnancy be ruled out? Also, from October 11th to October 16th, due to travel, I took two tablets of diphenhydramine (25 mg each) every day. It's been so long.Doctor's answer:
Theophylline dimenhydrinate tablets are a complex of diphenhydramine and theophylline, which have antihistamine effects, can inhibit vascular leakage, reduce tissue edema, and have sedative and antiemetic effects. They are used to prevent and treat motion sickness, such as nausea and vomiting caused by car sickness, seasickness, or air sickness. The daily dosage should not exceed 6 tablets. In case of overdose, induce vomiting, drink plenty of water, and consume milk or similar substances to alleviate gastrointestinal irritation and accelerate excretion. Overdose may worsen adverse reactions, such as sluggishness, drowsiness, difficulty concentrating, fatigue, and dizziness, as well as gastrointestinal discomfort.