Propranolol hydrochloride tablets are antihypertensive drugs that effectively compete with isoprenaline and norepinephrine and can reduce plasma activity. During pregnancy, if the blood pressure is too high, you can take it in moderation, but this drug is not used as the first-line treatment for pregnant women, if you can try not to use drugs, it is best to improve the symptoms according to your usual diet and rest time. Try to relax and have a low-salt, low-fat diet, and pay attention to not staying up too late and taking rest. You can eat fresh fruits and vegetables in moderation to improve the elasticity of blood vessels, reduce the chances of bleeding, and also to avoid hypertension.