Azilsartan (medicine information)
Azilsartan is a medicine used to help control high blood pressure (hypertension). It belongs to a group of medicines called angiotensin II receptor blockers (ARBs). This patient-friendly guide explains how azilsartan works, how it is typically taken, what to expect, and important safety considerations. It is written for people in the United Kingdom.
If you have any questions about your own situation—such as kidney function, pregnancy plans, or other medicines you take—speak to a healthcare professional for personalised advice.
Quick overview
- Medicine type: ARB (angiotensin II receptor blocker)
- Used for: high blood pressure (hypertension)
- Common effects: lowers blood pressure; may reduce strain on the heart and blood vessels
- Typical dosing: once daily (often with or without food)
- Key cautions: pregnancy, severely reduced kidney function, certain medicine combinations (e.g., “double RAAS” use)
- Monitoring: blood pressure and usually kidney function and potassium levels
Basic product information
| Category | Information |
|---|---|
| Generic name | Azilsartan |
| Drug class | Angiotensin II receptor blocker (ARB) |
| Main use | Hypertension (high blood pressure) |
| How it is taken | By mouth, typically once daily |
| Typical side-effect theme | May cause dizziness, low blood pressure, or changes in kidney function/potassium (especially with certain risk factors) |
| Availability | Availability can vary by supplier and local supply schedules |
What is azilsartan and how does it work?
Azilsartan helps treat high blood pressure by blocking the action of angiotensin II. Angiotensin II is a natural hormone that causes blood vessels to tighten (constrict) and can also increase sodium and water retention. This leads to higher blood pressure and increased workload for the heart.
As an ARB, azilsartan selectively blocks the angiotensin II type 1 (AT1) receptor. This can lead to:
- Relaxation of blood vessels (lower resistance)
- Reduced blood pressure
- Lower strain on the heart over time
- Fewer “overactive” effects of the renin–angiotensin–aldosterone system compared with untreated hypertension
How quickly does azilsartan work?
Many people start to notice a blood pressure reduction within the first days, but the full effect often becomes clearer over several weeks. Consistent daily use is important.
- Early effect: commonly within the first few days
- Full effect: often within several weeks
- Best assessment: regular blood pressure readings over time
Pharmacokinetics (how the body handles it)
Pharmacokinetics describes how a medicine is absorbed, distributed, metabolised, and excreted. While exact values can vary between individuals, the main practical points for azilsartan include:
- Absorption: azilsartan is absorbed after oral dosing.
- Distribution: it circulates in the bloodstream and reaches sites where blood-pressure regulation occurs.
- Metabolism: it is processed by the body mainly via metabolic pathways typical for this class of medicine.
- Elimination: elimination occurs through the body’s normal clearance routes (primarily by liver-related processes, with renal contribution depending on the person).
- Duration of action: support for once-daily dosing is typical for many ARBs, including azilsartan.
If you have impaired liver or kidney function, your clinician may adjust treatment and monitoring frequency. Always follow the plan you are given.
Typical use and indications
Azilsartan is indicated for the treatment of hypertension (high blood pressure). Lowering blood pressure reduces the risk of long-term complications such as stroke, heart disease, and kidney damage.
Common reasons clinicians choose an ARB
- You need effective blood pressure lowering.
- You may not tolerate other blood pressure medicines.
- Your clinician prefers an ARB approach based on your medical history.
Dosing (how to take azilsartan)
Dosing can vary depending on your blood pressure response, kidney function, and overall health. The most important advice is to take azilsartan exactly as directed by your healthcare professional.
Typical schedule:
- Once daily dosing is commonly used for azilsartan.
- It is often taken at the same time each day to maintain steady effects.
If your blood pressure is not controlled, your prescriber may:
- Adjust the dose,
- Add another blood pressure medicine (often a thiazide-like diuretic or calcium-channel blocker), or
- Review lifestyle factors (salt intake, weight, activity, alcohol).
Timing: when to take it
- With or without food: azilsartan can usually be taken either way.
- Time of day: choose a time that helps you remember. Some people prefer morning; others find evening better—follow your clinician’s advice and how you respond.
- Missed dose: if you miss a dose, take it when you remember unless it is close to your next dose. Do not take a double dose.
Food interactions
Food generally does not significantly reduce the effectiveness of azilsartan. However, taking it consistently (for example, always with or always without food) can help reduce day-to-day variation.
If you have stomach issues, severe reflux, or you experience dizziness after taking the tablet, discuss this with a healthcare professional. They may recommend a timing change or review other medicines.
Alcohol: interactions and practical advice
Alcohol can affect blood pressure and may increase the chance of dizziness or light-headedness, especially when you start treatment or if your dose is increased.
- Moderation is important.
- Avoid heavy drinking, particularly in the first days after starting azilsartan.
- Be cautious when standing up quickly if you feel woozy.
Medicine interactions: important combinations to know
Azilsartan may interact with other medicines. Not all interactions are serious, but some combinations can raise the risk of kidney problems, low blood pressure, or altered potassium levels.
Medicines that can increase potassium or affect kidney function
- Potassium supplements
- Potassium-sparing diuretics (e.g., spironolactone, eplerenone, amiloride)
- Potassium-containing salt substitutes
- Non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen and naproxen
Using NSAIDs regularly (especially “as-needed but frequent” use) alongside an ARB may increase the risk of reduced kidney function in some people, particularly if you are dehydrated. Occasional short-term NSAID use may be acceptable for some individuals, but confirm with your healthcare professional.
“Double RAAS” combinations (generally not recommended without specialist oversight)
ARBs work on the renin–angiotensin–aldosterone system. Combining more than one medicine that targets the same pathway can sometimes increase side effects such as kidney function changes and high potassium.
- ARB + ACE inhibitor (e.g., azilsartan with lisinopril/enalapril)
- ARB + aliskiren in certain patient groups
In the UK, these combinations are usually avoided unless a specialist has a specific reason and monitoring is in place.
Diuretics (“water tablets”) and dehydration
If you take a diuretic, your body may lose more salt and water, which can increase the likelihood of dizziness or a bigger drop in blood pressure—especially when starting or increasing doses. Ensure you stay well hydrated unless you have been advised to restrict fluids.
Lithium
Lithium can have a narrow safety margin. ARBs may increase lithium levels. If you take lithium, your clinician may require additional blood tests.
Other possible interactions
Tell your healthcare professional about all medicines and supplements you take, including:
- Herbal products (e.g., licorice-containing products)
- OTC cough and cold remedies (some may affect blood pressure)
- Decongestants (some can raise blood pressure)
Safety profile: common and serious side effects
Most common side effects
Side effects vary between individuals. Commonly reported effects with this class may include:
- Dizziness or light-headedness
- Low blood pressure, especially when standing up
- Headache
- Fatigue
Serious but less common concerns
Seek urgent medical advice if you experience signs of a serious reaction or complications such as:
- Swelling of the face, lips, tongue, or throat (rare; could indicate allergy/angioedema)
- Severe dizziness, fainting, or collapse
- Signs of kidney problems (e.g., reduced urine, unusual swelling, persistent nausea)
- Irregular heartbeat, severe weakness that could suggest potassium imbalance
- Severe dehydration (e.g., from vomiting or diarrhoea)
Who should take extra care?
- Pregnancy: ARBs are generally contraindicated in pregnancy due to risk to the unborn baby.
- Breastfeeding: discuss suitability with a healthcare professional.
- Kidney disease: monitoring is often needed; dose may need adjustment.
- Dehydration: if you are vomiting/diarrhoea or not drinking well, your clinician may advise temporary review.
- Low blood pressure: risk of symptoms may be higher.
- High potassium risk: monitor potassium if you are at risk.
Practical use tips (getting the best from your medicine)
- Measure your blood pressure regularly if recommended. Keep a log to discuss with your clinician.
- Stand up slowly when you first start treatment or if you feel dizzy.
- Stay consistent: take the dose at the same time each day.
- Hydration matters: dehydration can worsen dizziness and affect kidney function.
- Don’t change or stop suddenly: if you feel unwell or side effects occur, speak to a healthcare professional for advice.
- Attend blood tests if scheduled (kidney function and potassium are commonly checked with this class).
- Watch OTC medicines: NSAIDs and some cold/flu products can affect blood pressure or kidney function.
Alcohol and lifestyle considerations
Alongside your medication, lifestyle changes often help improve blood pressure control. Consider:
- Reduce salt (especially processed foods).
- Maintain a healthy weight if appropriate.
- Be active (regular walking or other safe activity).
- Limit alcohol and avoid binge drinking.
- Stop smoking if you smoke, as it increases cardiovascular risk.
Alternative options for treating high blood pressure (UK)
If azilsartan is not suitable or not effective enough, clinicians may consider other medicines or combinations. Alternatives often include other ARBs, ACE inhibitors, calcium-channel blockers, and thiazide-like diuretics.
Common alternative classes
- ACE inhibitors (e.g., enalapril, lisinopril)
- Other ARBs (e.g., losartan, valsartan, olmesartan—availability and suitability vary)
- Calcium-channel blockers (e.g., amlodipine)
- Diuretics (e.g., indapamide, hydrochlorothiazide)
- Other add-on options in resistant cases (specialist-guided)
The “best” alternative depends on your blood pressure readings, age, kidney function, diabetes status, cardiovascular history, and other medicines. Your healthcare professional can guide selection and monitoring.
Market and legal context in the United Kingdom
In the UK, medicines are regulated by the Medicines and Healthcare products Regulatory Agency (MHRA). Medicines must meet licensing and safety requirements before supply. Online pharmacy services operate within UK legal frameworks and typically require appropriate checks and patient information.
Azilsartan availability can vary due to supply, licensing status, and local prescribing practices. If you have difficulty obtaining it, ask your healthcare professional or pharmacy about equivalent alternatives within the same medicine class.
Recent guidance and clinical monitoring (general UK context)
UK hypertension management commonly follows national and international guidance that emphasises:
- Confirming diagnosis with reliable blood pressure measurements
- Starting treatment promptly when blood pressure is high enough
- Reviewing response regularly and adjusting therapy
- Monitoring kidney function and electrolytes for medicines that affect the renin–angiotensin–aldosterone system
- Considering cardiovascular risk overall, not just the number
Because recommendations can update, it’s wise to follow the most current advice from your healthcare team. Your clinician may also consider new evidence about benefit and safety for individual patients.
Delivery and availability (online pharmacy)
Availability and dispatch times can vary based on stock levels and the supplier’s distribution schedule. When ordering azilsartan online, you should:
- Check estimated delivery times at checkout.
- Ensure your address is correct and accessible for the courier.
- Allow extra time for deliveries if items are temporarily out of stock.
- Keep track of pharmacy order updates if substitutions or backorders occur (only if allowed by policy and guidance).
Storage: keep the tablets in a safe, dry place at the temperature stated on the package. Keep out of reach of children.
FAQ: azilsartan (patient questions)
1) What is azilsartan used for?
Azilsartan is used to treat high blood pressure (hypertension). Controlling blood pressure helps reduce the risk of stroke and heart and kidney complications over time.
2) How should I take it?
Azilsartan is usually taken once daily by mouth, at the same time each day. It can typically be taken with or without food. Follow the dosing instructions provided to you.
3) Will it interact with my other medicines?
It can interact with medicines that affect the kidneys, potassium levels, or blood pressure. Tell your healthcare professional about all medicines, including OTC products and herbal supplements—especially NSAIDs, potassium supplements, and diuretics.
4) Can I take painkillers like ibuprofen?
Occasional use may be possible for some people, but regular or higher-dose NSAID use can increase the risk of kidney issues when combined with ARBs. Ask your healthcare professional for advice based on your health and medicines.
5) Is azilsartan affected by food?
Food usually does not significantly change azilsartan’s effectiveness. Taking it consistently (with or without food) is often helpful.
6) Can I drink alcohol?
Alcohol may increase dizziness and lower blood pressure. If you drink, keep to sensible amounts and be cautious, especially after starting or when your dose changes.
7) What if I feel dizzy?
Dizziness can happen, particularly early in treatment or after a dose change. Sit or lie down if you feel faint. Check your blood pressure if you can, avoid sudden standing, and contact your healthcare professional for further advice.
8) Do I need blood tests?
Many people need periodic monitoring of kidney function and potassium levels. Your clinician will advise what tests you need and how often.
9) What should I do if I miss a dose?
Take it as soon as you remember unless it is close to the next dose. Do not take a double dose to make up for a missed tablet.
10) Who should not take azilsartan?
Azilsartan is generally not suitable in pregnancy. If you are pregnant, planning pregnancy, or breastfeeding, discuss the safest options with a healthcare professional immediately.
11) What are common warning signs to seek help for?
Seek urgent advice for facial/lip/tongue swelling, severe dizziness/fainting, signs of kidney problems (e.g., reduced urine), or symptoms that could indicate high potassium (significant weakness, palpitations).
12) Are there alternatives if azilsartan isn’t right for me?
Yes. There are other ARBs, ACE inhibitors, calcium-channel blockers, and diuretics, as well as combination approaches. Your prescriber can recommend alternatives based on your medical history and response.
Important safety notice
This page provides general information about azilsartan. It does not replace advice from a healthcare professional. If you are unsure whether azilsartan is suitable for you—particularly if you have kidney problems, are taking other medicines, are pregnant, or have had previous medication reactions—please seek professional guidance.
Need help? If you have questions about dosing timing, side effects, or delivery availability, contact the online pharmacy team for support before placing an order.
