What Factors Affect Norvasc® Dosage?

S. Berger

Amlodipine is a drug used to lower blood pressure, and it may be found as the brand name Norvasc®. Like many other medications, the medical reason for taking this drug often determines the Norvasc® dosage a person might take. Other factors can affect the dose needed to treat high blood pressure as well, such as an individual's age.

Anatomical model of the human body
Anatomical model of the human body

Children that are given this medication usually only need a Norvasc® dosage of between 2.5 milligrams (mg) and 5 mg, given once a day. Only youths over the age of six have been assessed to make sure this drug is safe, however, so it is not generally used in children younger than that. Additionally, whether this drug is safe for children to take in dosages over 5 mg has not been determined, as of 2011.

Many times, adults taking this drug will take a dose of 5 mg once per day at first. If necessary, a Norvasc® dosage of up to 10 mg once per day can be taken, though. Usually, one or two weeks are used to raise the dosage. During this time, an individual often will often have her blood pressure and other vital signs monitored to ensure that she is responding to the medication in a safe manner. To minimize the risk of side effects, this dose is raised slowly, by just 2.5 mg at a time.

Several conditions may lead to an adult only taking a total Norvasc® dosage of just 5 mg every day for hypertension, or high blood pressure. Many individuals over 65 years old take this lower dose, for example, as do adults with low body weight. Both of these groups of people might be at a greater risk of side effects when taking amlodipine at higher doses, so these individuals usually take a lower drug dose than healthy adults normally would. In these cases, a person will often take a smaller beginning dose of 2.5 mg per day, and the dose is increased over one week to two weeks.

The heart condition known as angina is sometimes treated with this drug as well. As with the doses for hypertension, adults usually take a starting Norvasc® dosage of 5 mg when beginning treatment for angina. Over the time period of a week, this amount is raised to 10 mg total, taken once per day. In most cases, people typically need 10 mg of this drug to truly benefit from taking it.

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Discussion Comments


I'm on this drug too, 5mg like most people although I started off with 2.5mg initially. Norvasc (amlodipine) is a strong drug. I've not heard of too many people using more than 5mg. I have a friend who uses 10mg, but she has high blood pressure and migraines and a lower dose wasn't working for her. But since Norvasc has many side effects, higher doses may increase their occurrence or severity. It's always best to use the lowest effective dose. This is true for any drug. 5mg is working fine for me now. I hope I won't have to up the dosage in the future.


@fify-- I'm on 5mg per day too but I take 2.5mg in the morning and 2.5mg in the evening. My doctor prescribes me the 2.5mg tablet so that it's easier to take but I could also split a 5mg tablet in half and take half in the morning and half in the evening.

You should not change anything without talking to your doctor first. But it's possible that taking the drug twice a day in lower doses rather than a larger dose once a day may work better for you. It depends on the half-life of the drug and how long it remains in the system.

Just talk to your doctor about it. He may change the timings of the dose, change the dose itself or may even switch you to another drug. I always tell my doctor whenever I have an issue like this and we figure out the next step together.


I've been on 5mg of Norvasc per day. It seemed to be working fine at first but now, I'm experiencing high blood pressure again in the evening and at night. I have an appointment with my doctor to figure out why this is happening. But I'm wondering if this has happened to anyone else and what dosage everyone is on?

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