34 Oakridge Business Park Mon–Fri: 9:00am–6:00pm
ChemistOWL
📞 Contact phonefree, 24/7

Buy Slozem online in the UK – fast delivery from a trusted pharmacy

Diltiazem Hydrochloride

★★★★☆ 4.5 (201 reviews)
In stock — ready for delivery today
Choose dosage and pack size
DosagePackagePrice per DosePrice
30mg360 pills£0.93
£373.87
£336.49
Best Price
30mg180 pills£1.01
£202.56
£182.30
30mg120 pills£1.11
£148.79
£133.91
30mg90 pills£1.22
£121.28
£109.15
30mg60 pills£1.33
£88.77
£79.89
30mg30 pills£1.45
£48.76
£43.88
60mg360 pills£1.16
£463.91
£417.52
60mg180 pills£1.22
£242.58
£218.32
60mg120 pills£1.41
£187.56
£168.80
60mg90 pills£1.54
£153.79
£138.41
60mg60 pills£1.73
£115.03
£103.53
60mg30 pills£1.98
£66.26
£59.64
90mg360 pills£1.56
£625.21
£562.69
Popular
90mg180 pills£1.63
£326.36
£293.72
90mg120 pills£1.67
£222.57
£200.31
90mg90 pills£1.74
£175.05
£157.55
90mg60 pills£1.83
£122.53
£110.28
90mg30 pills£1.96
£65.01
£58.51
120mg180 pills£2.32
£463.91
£417.52
120mg120 pills£2.43
£323.85
£291.47
120mg90 pills£2.55
£255.08
£229.57
120mg60 pills£2.73
£182.55
£164.30
120mg30 pills£3.20
£106.28
£95.65
£336.49
Quantity:
✈️
Airmail 14–21 days
Express delivery 5–9 days
🎁
Free Airmail from £150.05
🔒
Crypto discount −10%

Disclaimer: This information is for general guidance only and should not replace medical advice. Always read the official patient information leaflet and consult a healthcare professional before taking slozem (Diltiazem Hydrochloride).

What is slozem (Diltiazem Hydrochloride)?

Slozem is a brand name used for diltiazem hydrochloride, a medicine that belongs to the calcium channel blocker family. It is used to help manage blood pressure and certain heart rhythm problems. The exact form and strength you receive will depend on your prescription and supply arrangements in your area.

Diltiazem works by relaxing the muscles of the blood vessels. This helps to lower blood pressure and makes it easier for the heart to pump blood. In rhythm disorders, the medicine can help slow the heart rate and improve the regularity of the heartbeat. The effect on the heart and vessels is gradual, not instantaneous.

The medicine may be provided as tablets, modified-release forms, or other prescriber-approved preparations. The active ingredient is diltiazem hydrochloride, and there may be other ingredients in the tablet that can cause allergies in some people. Always check the patient information leaflet for a full list of ingredients.

In this country, slozem may require a prescription depending on local rules. If you have questions about whether you need a prescription, check with your doctor or pharmacist. Do not start or stop treatment without professional advice, especially if you have a heart condition or blood pressure changes.

People should not assume slozem is suitable for everyone. If you have had an allergic reaction to diltiazem or other calcium channel blockers, or if you have a specific heart condition, talk to a clinician before starting therapy. A healthcare professional can confirm whether slozem is appropriate for your situation based on your medical history and current medicines.

What is slozem used for?

The primary use of slozem is to help lower high blood pressure. By reducing the force and rate at which the heart works, it can protect against stroke and heart disease in many patients. Your clinician will consider this medicine as part of a broader treatment plan that includes lifestyle changes, monitoring, and possibly other medicines.

Slozem is also used to treat some types of chest pain (angina). In angina, the medicine reduces the heart’s workload and can lessen the frequency or severity of symptoms. It is not a direct treatment for a heart attack, and it should not be used for immediate relief of chest pain unless advised by a healthcare professional in an acute setting.

For rhythm problems of the heart, such as certain atrial arrhythmias, slozem may help regulate the heartbeat and improve the rhythm when used under medical supervision. It is not suitable for all rhythm disorders, so a clinician will evaluate whether this medicine is appropriate for your specific condition.

Across these uses, slozem is often prescribed as part of a multi-drug regimen. It may be combined with other blood pressure-lowering medicines or heart medications. Any adjustment to your treatment plan should be made by a clinician who can assess potential interactions and side effects.

Because responses vary, it may take several days to weeks to notice the full effect on blood pressure and symptoms. Regular follow-up appointments are important to assess effectiveness and tolerability, and to make adjustments if needed. If your symptoms worsen or you develop new symptoms, contact your healthcare professional promptly.

How slozem works

Diltiazem blocks specific calcium channels in the heart and blood vessels. By reducing calcium entry into smooth muscle cells, the vessels relax and widen. This lowers the pressure in the arteries and makes it easier for the heart to pump blood.

In the heart, slower conduction through the atrioventricular (AV) node can help control rapid heart rates during certain rhythm disturbances. The overall effect is a combination of lower blood pressure and steadier heart rhythm, which can relieve symptoms and reduce strain on the cardiovascular system.

The exact balance of effects depends on the dose, formulation, and your individual physiology. It is important to take slozem exactly as prescribed and to avoid changing the dose or stopping abruptly without medical advice, as this can affect blood pressure and heart rhythm.

Because slozem can interact with other medicines and foods, your clinician may adjust the dose or timing to achieve the best outcome while reducing the risk of side effects. If you notice unusual symptoms after starting or changing therapy, contact a healthcare professional for evaluation.

Non-prescription products, herbal remedies, or other medicines can influence how slozem works. Always tell your doctor or pharmacist about all medicines and supplements you use, including vitamins and over-the-counter products, to avoid potential interactions. If you have liver or kidney problems, talk with a clinician about how slozem may affect you, as adjustments may be needed for safety and effectiveness.

How to take slozem

Always follow the instructions provided by your doctor or pharmacist. Do not change the dose unless advised by a clinician. The timing and duration of treatment are tailored to your condition and response to therapy.

Take the medicine with water. Do not crush or chew any extended-release forms unless the product label specifically instructs that this is safe. Swallowing a crushed tablet can alter how the medicine is released in the body and may increase side effects.

Try to take slozem at around the same time each day to help you remember. If you forget a dose and you remember soon afterward, take it as soon as you can. If it is close to the time of your next dose, skip the missed dose and resume your regular schedule. Do not double up to make up for a missed dose unless advised by your clinician.

If you are advised to stop taking slozem, do so under a clinician’s supervision. Stopping suddenly can cause a rapid change in blood pressure or heart rhythm, which may be risky for some people. Your doctor will outline a plan to discontinue safely if needed.

Store slozem in its original packaging at room temperature, away from moisture and heat. Keep it out of reach of children and pets. Do not use the medicine after the expiry date printed on the label. If you have any questions about how to use the product, ask your pharmacist for guidance.

Who should avoid slozem

Slozem may not be suitable for everyone. People with very low blood pressure, known heart block, or certain severe heart conditions without a pacemaker should avoid this medicine unless specifically advised by a cardiology specialist. A clinician will check your heart rhythm and conduction before starting therapy.

If you have a history of liver disease or significant electrolyte imbalances, your doctor may need to monitor your liver function and adjust treatment accordingly. In some cases, slower clearance of the medicine can occur, affecting how you respond to the drug.

Allergy or sensitivity to diltiazem or other ingredients in slozem is a reason to avoid this medicine. If you have ever had an allergic reaction to a similar medicine, discuss alternatives with your clinician. Tell your doctor about any other medicines you take to avoid potential reactions.

Pregnancy or breastfeeding status needs careful consideration. If you are pregnant or planning pregnancy, or if you are breastfeeding, talk with your clinician about the risks and benefits of continuing therapy. Do not start or stop treatment without professional advice during these periods.

People who are taking certain medicines for heart rhythm disorders, high blood pressure, or chest pain should have their treatment closely monitored. A clinician will assess whether slozem is appropriate based on the overall treatment plan and health status. If you have a new diagnosis or a change in health, inform your healthcare team promptly.

Warnings about slozem

Inform your doctor about all medicines you take, including over‑the‑counter drugs, vitamins, herbal supplements, and any other prescriptions. Some medicines can interact with slozem in ways that affect heart rhythm or blood pressure, sometimes with serious consequences.

Avoid drinking large amounts of alcohol while taking slozem, as it can increase dizziness or lower blood pressure, potentially causing fainting or falls. Your ability to drive or operate machinery may be affected by dizziness or lightheadedness, especially when starting treatment or changing dose. Discuss your activities with a clinician if you have concerns.

In some people, slozem can cause a slow heartbeat, dizziness on standing, swelling in the ankles or feet, or flushing. If these symptoms become persistent or severe, contact your clinician for advice. Severe symptoms, such as chest pain, severe shortness of breath, or fainting, require urgent medical attention.

Long-term use of slozem may require regular monitoring of blood pressure, heart rate, and liver function. Your clinician may perform tests or ask about symptoms at follow-up visits to ensure the medicine remains suitable for you. If a new health issue arises, inform your healthcare team as soon as possible.

Special care is advised in older adults, who may be more sensitive to side effects such as dizziness or low blood pressure. The decision to start or continue slozem in older patients is made with careful assessment of risks and benefits by a clinician.

Possible side effects

Like all medicines, slozem can cause side effects in some people. Most people tolerate the medicine well, especially when started at a low dose and adjusted gradually under supervision. Common side effects include headache, flushing, and a feeling of warmth or swelling in the ankles and feet.

Dizziness, lightheadedness, or tiredness can occur, particularly after starting treatment or after a dose increase. These effects often improve with time as your body adjusts, but if they persist or worsen, speak with a clinician.

Other possible effects include nausea, constipation, or a slower heart rate. In rare cases, slower conduction of the heart or changes in heart rhythm can occur. If you notice fainting, severe chest pain, or shortness of breath, seek urgent medical help.

Serious allergic reactions are uncommon but require immediate attention. Seek medical help if you experience rash, swelling of the face or throat, severe dizziness, or trouble breathing. This is not a complete list of side effects; contact your clinician for a full list and tailored guidance.

If you are unsure whether a symptom you have is related to slozem, consult your pharmacist or doctor. They can help determine whether you should continue, adjust, or stop treatment. Do not ignore persistent or worsening symptoms.

Interactions with other medicines

Many medicines can interact with slozem, potentially changing its effects or increasing side effects. Inform your doctor about all medicines you take, including over‑the‑counter drugs and supplements. Examples of medicines that may interact include other drugs that affect blood pressure or heart rhythm, certain antibiotics or antifungals, and medicines that affect the liver or kidneys.

Grapefruit and some grapefruit products may interact with diltiazem-containing medicines and can alter how the medicine works. If you regularly ingest grapefruit, discuss this with your clinician as they may advise on changes to your regimen or monitoring needs.

In some cases, slow heart rate or low blood pressure can be worsened by combining slozem with other calcium channel blockers or beta blockers. A clinician will assess the combined effect and may adjust doses or choose a different treatment approach if necessary. Do not start or stop any interacting medicines without professional guidance.

Some medicines used for diabetes, seizures, infections, or mental health conditions can also interact with slozem. If you start a new prescription, tell your clinician about slozem, and have the new medicine reviewed for possible interactions. If you notice unusual symptoms after starting a new medicine, seek advice promptly.

Pregnancy and breastfeeding

The use of slozem during pregnancy is a decision that requires careful consideration. The potential risks and benefits should be discussed with a clinician, and treatment should only continue if the doctor recommends it based on the specific health needs of the pregnant person and the fetus. Do not change your medication during pregnancy without professional guidance.

Breastfeeding while taking slozem is not fully established. If you are breastfeeding or planning to begin, discuss with your healthcare provider to determine whether continued use is appropriate, or whether alternative treatments may be preferable for your situation.

Information about pregnancy and lactation is based on general clinical knowledge; your clinician may have more updated guidance tailored to your case. If you become pregnant while taking slozem, contact your doctor promptly to discuss the safest course of action.

Women of childbearing potential should avoid becoming pregnant without consulting their prescriber, because changes to medication may be required during pregnancy or while planning pregnancy. If you are planning pregnancy, inform your clinician so they can review the treatment plan and adjust if needed.

Frequently asked questions

How long does slozem take to start working?

Some people notice changes in blood pressure and symptoms within a few days, while for others it may take longer. The full effect is often assessed over several weeks as the dose is adjusted to balance benefit and tolerance. If you have not noticed any improvement after a few weeks, consult your clinician for advice.

What should I do if I miss a dose?

If you miss a dose, take it as soon as you remember, unless it is nearly time for your next dose. In that case, skip the missed dose and resume your regular schedule. Do not double the next dose to catch up; doubling can raise the risk of side effects.

Can I take slozem with other heart medicines?

Some medicines used to treat heart conditions can interact with slozem. It is important to tell your clinician about all medicines you take, including those bought over the counter. A pharmacist can review potential interactions and advise on safe combinations.

Can I drink alcohol while taking slozem?

Alcohol can lower blood pressure and may increase dizziness or fainting in some people taking slozem. It is best to limit or avoid alcohol until you understand how the medicine affects you. Always follow your clinician’s guidance on alcohol use.

What should I do if I experience dizziness or near-fainting?

Lightheadedness or dizziness can occur, especially after starting treatment or after dose changes. Sit or lie down if you feel faint and avoid driving until you know how the medicine affects you. If dizziness is persistent or severe, contact a healthcare professional for advice.

Is slozem safe in elderly people?

Elderly patients may be more sensitive to some side effects, such as dizziness or low blood pressure. A clinician will monitor closely and may adjust the dose or frequency accordingly to maintain safety and effectiveness.

Can I stop slozem suddenly?

Do not stop taking slozem abruptly without medical advice. Stopping suddenly can cause a rebound rise in blood pressure or changes in heart rhythm. If stopping is needed, your doctor will provide a plan to taper the medicine gradually.

Do I need a prescription to obtain slozem?

Whether a prescription is required depends on local rules where you live. In many places, medicines like slozem require a prescription or are supplied under supervision. Check with a local pharmacist or healthcare professional to confirm the status in your area.

What should I do if I overdose?

If you suspect an overdose, seek urgent medical help promptly. Signs of overdose may include severe dizziness, fainting, slow or irregular heartbeat, or shortness of breath. Do not delay in getting professional assistance.

How should I store slozem?

Store slozem at room temperature in its original packaging, away from moisture and heat. Keep it out of reach of children. Do not use medicines after their expiry date. If you have any questions about storage, ask your pharmacist for guidance.

Can I take slozem during pregnancy or breastfeeding?

Guidance on use during pregnancy or breastfeeding depends on individual health needs. It is important to discuss with a clinician before continuing therapy if pregnancy is planned or suspected, or if you are breastfeeding. Decisions should be guided by professional advice tailored to your situation.

Sources

The information provided here reflects general patient information for diltiazem-containing medicines and standard clinical practice. For detailed guidance, refer to the official patient information leaflets for slozem and related diltiazem products available through your healthcare provider.

Guidelines and safety considerations are informed by national pharmacovigilance resources and routine clinical practice in the United Kingdom. Healthcare professionals should consult official leaflets and regulatory updates for the most current recommendations.

If you have questions about this information or its applicability to your circumstances, speak with a doctor or pharmacist who can review your medical history and current treatment plan. This content is not a substitute for professional medical advice.

When available, use the official patient information leaflet that accompanies your specific slozem product for the most precise details about ingredients, contraindications, and administration instructions.

✈️

Airmail

14–21 days. Free from £150.05 .

Express delivery

5–9 days. £22.51

🔒

Crypto discount

−10% when paying with cryptocurrency.

🔄

Reorder discount

−10% on all repeat orders.

📦 Packaging and discretion

All orders are packed in neutral, unbranded boxes with no product name on the outside.

👨‍⚕️
Medically reviewed by
James Cartwright
GPhC-Registered Pharmacist; Chief Pharmacist & Head of Pharmacy