Amlodipine besylate tablets are also a kind of antihypertensive drug, which belongs to calcium antagonist. Amlodipine besylate is a long-acting antihypertensive drug with a long half-life, half the time of drug degradation, also called half-life, usually 35-55 hours, so the drug is relatively smooth in lowering blood pressure, but it is slow to take effect, because the metabolism is relatively slow, if acute hypertension, if the blood pressure falls quickly may not be able to do, generally oral The effect can only be achieved gradually after a few days, 7 or 8 days, so do not rush to adjust the dose when using the drug, first take it orally for about 1 week and then adjust the dose. The drug has a long half-life, so it can be taken in pieces, without a controlled-release film or a slow-release film. Of course, allergy to the drug is contraindicated, as well as for pregnant women lactating, children are not suitable for application. The most common side effects are ankle edema, gingival hyperplasia, and muscle pain, so if this is serious, consider changing to another antihypertensive drug.