Amlodipine

Amlodipine is a prescription calcium channel blocker used mainly for high blood pressure (hypertension) and for chronic stable angina (exertional chest tightness). It is not a diuretic (water tablet) and not a beta-blocker.

Good long-term blood pressure control reduces the risk of stroke, heart attack, and kidney problems in people whose clinicians have recommended treatment. For angina, amlodipine may reduce how often symptoms occur on effort; it does not replace Glyceryl trinitrate (GTN) (GTN) for sudden angina — continue GTN as your prescriber has taught you.

Many people also take other heart or diabetes medicines (for example Ramipril, an ACE inhibitor, or Metformin). Your GP or pharmacist may advise how these fit together and what to monitor.

Lifestyle measures your GP or pharmacist may suggest — less salt, regular activity, sensible alcohol limits, not smoking — work alongside tablets. Amlodipine does not replace them.

Only your prescriber can decide if amlodipine is right for you, which strength to use, and whether to combine it with other drugs.

Amlodipine relaxes the muscle in the walls of small arteries so the vessels widen. That reduces resistance to blood flow, which usually lowers blood pressure. With less “pressure load,” the heart’s workload can fall slightly, which helps some people with angina.

It works only while you continue to take it as prescribed; blood pressure can rise again if tablets are stopped without a supervised plan. Speak to your GP or pharmacist before stopping — especially if you have angina or have had a heart attack or stroke.

Everyone responds differently. Your practice may adjust the dose or add another class of tablet (for example an ACE inhibitor) if readings or symptoms are not controlled or if side effects limit how much amlodipine you can take.

Your amlodipine dosage is printed on the prescription label — common adult strengths are 5 mg or 10 mg once daily; some people start on 2.5 mg if they are older, frail, or have liver impairment. Never change strength or stop without medical advice.

• Swallow the tablet whole with water, once daily at roughly the same time (morning or evening — pick what you will remember).

• You can usually take it with or without food; if your patient information leaflet says something different for your brand, follow that.

• Liquid amlodipine must be measured with the oral syringe or spoon supplied — not a kitchen teaspoon.

• How long does amlodipine take to work? Blood pressure often begins to fall within a few days; the full effect may take one to two weeks after starting or changing dose. Angina improvement can also build gradually.

• If home readings look “normal,” that usually means treatment is working — it does not automatically mean you should stop. Your GP or pharmacist may advise a supervised plan if a dose reduction or trial off tablets is appropriate.

Most amlodipine side effects are mild and often worst in the first week or after a dose increase. Your GP or pharmacist may advise waiting briefly, changing dose time, reducing the dose, or trying a different blood pressure medicine if symptoms continue.

• Swollen ankles, feet, or legs (fluid pooling) — very common; leg elevation may help a little — report significant swelling at review.

• Flushing, feeling hot, or headache.

• Dizziness or light-headedness, especially when standing quickly (postural hypotension).

• Palpitations (awareness of heartbeat), fatigue, or sleep disturbance.

• Tummy pain, nausea, or constipation.

• Mild gum overgrowth can occur rarely — mention mouth changes to your dentist and GP.

Speak to your GP or pharmacist if side effects worry you or affect driving or daily life — do not stop suddenly on your own if you have angina or high blood pressure unless a clinician tells you to.

Call 999 if you have crushing or spreading chest pain, collapse, severe breathlessness, or a severe allergic reaction with facial or tongue swelling or difficulty breathing.

• Same-day GP or NHS 111: fainting or near-fainting, a racing or irregular heartbeat that does not settle, or angina that is clearly worse or different from your usual pattern.

• Urgent assessment: yellowing of skin or eyes, severe upper tummy pain, or dark urine (possible liver injury — uncommon).

• Severe blistering skin reaction (rare).

• Sudden severe drop in blood pressure with confusion or cold, clammy skin — seek urgent help.

If you are unsure how urgent symptoms are, NHS 111 can advise; after chest pain or collapse, err on the side of 999.

What if I miss a dose? Take it when you remember unless your next dose is due soon — then skip the missed dose and take the next one at the usual time. Do not take two tablets together to catch up unless your prescriber has told you to.

If you are sick soon after a dose, your pharmacist can advise whether to take another tablet that day. Frequent missed doses weaken blood pressure control over time; your GP or practice pharmacist may suggest a dosette box, alarm, or review.

Do not take amlodipine if you have ever had a serious allergic reaction to amlodipine, other dihydropyridine calcium channel blockers, or any listed ingredient. Your prescriber will also avoid or use great caution with cardiogenic shock, unstable heart failure after a heart attack, or very low blood pressure unless a specialist is guiding care.

• Severe aortic stenosis and some other structural heart problems need individual assessment before starting.

• Significant liver disease may mean a lower starting dose and closer follow-up.

• Use in children is specialist-led.

Always give a full list of medicines and supplements before starting or stopping amlodipine so your GP or pharmacist can check safety.

Can I take amlodipine with other medicines? Often yes — it is commonly combined with ACE inhibitors such as Ramipril, ARBs, or diuretics — but blood pressure can fall too low or you may feel dizzy when standing. Your prescriber plans combinations; if you feel faint, speak to your GP or pharmacist rather than changing doses yourself.

Anti-inflammatory painkillers such as Ibuprofen can raise blood pressure and affect kidneys in some people on blood pressure tablets — your GP or pharmacist may advise occasional use only or alternatives.

Some antibiotics, antifungals, and HIV medicines can alter amlodipine levels. St John’s wort and other herbal products can interact — always check before adding anything new.

Grapefruit juice can raise levels of some calcium channel blockers; with amlodipine the effect is usually smaller than with certain other drugs, but your pharmacist may still suggest avoiding large daily amounts.

Blood pressure treatment in pregnancy must be individual. Speak to your GP or midwife before changing amlodipine — some medicines are preferred in pregnancy, and very high blood pressure also carries risks, so do not stop tablets without a plan.

Small amounts may pass into breast milk; your prescriber can discuss feeding options if you need ongoing treatment.

Most monitoring is blood pressure rather than blood tests specifically for amlodipine. Your surgery may measure BP in clinic, lend a validated home monitor, or ask for readings after dose changes.

Kidney function and other tests may still be done for diabetes, other cardiovascular drugs, or general health — attend when invited.

If ankle swelling appears, your clinician may review fluid tablets, heart function, and other causes rather than relying on tests alone.

Alternatives depend on your condition (blood pressure only, angina, both), other illnesses, and what you have already tried. Your GP or cardiologist may consider other calcium channel blockers, ACE inhibitors, angiotensin receptor blockers (such as Losartan), beta-blockers (such as Bisoprolol), or diuretics — names are examples of classes, not recommendations for you personally.

• For angina, options might include beta-blockers, long-acting nitrates, or procedures — only your clinician can advise.

• Lifestyle support (activity, diet, alcohol, smoking) runs alongside any tablet change.

Do not switch or stop blood pressure medicines without prescriber guidance.