1antihistamine — a medication that blocks or reduces the effects of histamine, commonly used to treat allergy symptoms such as itching, runny nose, and sneezing.
花粉症の季節には抗ヒスタミン剤を服用する人が多い。
Many people take antihistamines during pollen season.
第一世代の抗ヒスタミン剤は眠気を引き起こすことがあるので注意が必要だ。
First-generation antihistamines can cause drowsiness, so care is needed.
医師は症状に合わせて経口の抗ヒスタミン剤を処方した。
The doctor prescribed an oral antihistamine appropriate for the symptoms.