The correct time to take Valtrex can be on an empty stomach or with a meal. It is recommended that the medication be taken at the same time every day on a regular basis (e.g. in the morning). 1. Valsartan is rapidly absorbed after oral administration and its absorption varies widely. It is recommended that the drug be taken at the same time every day (such as in the morning) is better, and studies have shown that regardless of whether it is taken with or without meals, the blood concentration of valsartan in the body is similar, and there is no significant effect on clinical efficacy, so it can be taken with meals or on an empty stomach. 2. Valsartan is a blood pressure-lowering drug, which achieves the effect of lowering blood pressure by selectively acting on the AT1 receptor subtype. It does not affect the heart rate while lowering blood pressure, and is used to treat a variety of mild to moderate hypertension, especially for patients who are intolerant to ACE inhibitors. 3. Valsartan can cause pharyngitis, headache, nausea, cough, constipation, rhinitis, arthralgia, insomnia, decreased libido, renal impairment and other adverse reactions. 4. It is prohibited for pregnant and lactating women and so on. Valsartan is a prescription drug, there are certain adverse reactions, should be used under the guidance of a doctor, not blindly, so as not to cause adverse consequences.