Amlodipine
Medication
calcium channel blocker
heart & blood pressure
Not medical advice. Check with your doctor or pharmacist before you start, stop or change the timing of anything you take.
How to use
What it’s for
Prescribed for high blood pressure and angina
When to take
NHS: once a day, at the SAMe time every day
Take with
Water · NHS: before or after eating, but no grapefruit
Pros & cons
Pros
- NHS: once a day, before or after eating
- HealthHub: relaxes and widens blood vessels
- NHS: a liquid form exists; children over 6 can take it
Cons
- NHS: ankle, foot and leg swelling is common
- NHS: headaches, dizziness, flushing, palpitations
- NHS: not usually recommended during pregnancy
Sources
- HSA — Listing of Registered Therapeutic Products (data.gov.sg open dataset, 5,511 rows, pulled in full via datastore_search and filtered locally) · read 2026-08-27
what it says
“All 86 registered amlodipine products (35 single-ingredient) carry Forensicclassification 'Prescription Only' — SIN05277P NORVASC TABLET 5 mg · SIN14005P SUNVASC · SIN14583P AMCARDIA · SIN14529P AMCAD · SIN14213P Zynor”
- NHS Medicines A-Z — Amlodipine: what amlodipine is for · read 2026-08-27
what it says
“Amlodipine is a medicine used to treat high blood pressure and angina. It's only available with a prescription … a type of medicine called a calcium-channel blocker.”
- NHS Medicines A-Z — Amlodipine: how to take amlodipine · read 2026-08-27
what it says
“Amlodipine comes as tablets or a liquid that you swallow. You'll usually need to take it once a day, at the same time every day. You can take it before or after eating or drinking.”
- NHS Medicines A-Z — Amlodipine: side effects · read 2026-08-27
what it says
“Common side effects of amlodipine include: swelling in your ankles, feet and legs (oedema); headaches, dizziness and feeling sleepy; a fast heartbeat … flushing … tummy pain and feeling sick (nausea)”
- NHS Medicines A-Z — Amlodipine: who can and cannot take it, pregnancy and breastfeeding · read 2026-08-27
what it says
“Most adults and children over the age of 6 can take amlodipine … it may not be suitable if: … you have low blood pressure … heart failure … a recent heart attack … a history of heart valve disease”
- NHS Medicines A-Z — Amlodipine: taking it with other medicines · read 2026-08-27
what it says
“simvastatin, which is a type of statin; some antibiotics, such as rifampicin; other blood pressure medicines; some medicines to treat fungal infections, such as fluconazole … ciclosporin or tacrolimus; … St John's wort”
- NHS Medicines A-Z — Amlodipine: food and alcohol · read 2026-08-27
what it says
“Do not eat grapefruit or drink grapefruit juice while taking amlodipine because it can increase the chance of side effects.”
- HealthHub (Pharmaceutical Society of Singapore) — Amlodipine: what is this medication for · read 2026-08-27
what it says
“Amlodipine lowers your blood pressure by relaxing and widening blood vessels.”
- HealthHub — Amlodipine: what food or medication should I avoid · read 2026-08-27
what it says
“Avoid taking grapefruit when you are taking this medicine as grapefruit may interact with your medicine and increase the risk of side-effects.”
- US FDA label for NORVASC (amlodipine besylate), section 2 Dosage and Administration, via openFDA drug/label.json (effective 2023-02-15) · read 2026-08-27
what it says
“The usual initial antihypertensive oral dose of NORVASC is 5 mg once daily, and the maximum dose is 10 mg once daily … Doses in excess of 5 mg daily have not been studied in pediatric patients”
Updated 2026-08-29. Every line above traces to a numbered source. Kozen-X is not a medical device and does not give medical advice. It lists what published sources have written down — nothing more. A pair not listed is unrecorded, not cleared. Before you start, stop or re-time anything, talk to your doctor or pharmacist.