By the Medsmingle Team · Updated 13 November 2026

This is a prescription medicine. Only take it if it has been prescribed for you after a medical assessment, and follow your doctor’s and pharmacist’s instructions.

Rosuvastatin and atorvastatin are the two most powerful statins. Both lower LDL cholesterol and reduce heart attack and stroke risk, and both are available as inexpensive generics.

Strength

Milligram for milligram, rosuvastatin is stronger: rosuvastatin 20 to 40 mg and atorvastatin 40 to 80 mg are both “high-intensity” doses that cut LDL by about 50% or more.

Key differences

• Interactions: rosuvastatin is less affected by grapefruit and many CYP3A4-interacting medicines
• Kidneys: rosuvastatin needs lower doses in severe kidney disease; atorvastatin doesn’t need kidney adjustment
• Ancestry: people of Asian descent often start rosuvastatin at a lower dose, as blood levels can be higher

Side effects (both)

• Muscle aches; symptoms can have several causes and should be assessed
• Small rise in blood sugar
• Rare: serious muscle breakdown or liver problems

Call your doctor for unexplained severe muscle pain or weakness, dark urine, or yellow skin. See atorvastatin side effects.

Frequently asked questions

Can I switch between them?

Your prescriber may switch treatment, but the doses are not equivalent milligram for milligram. Do not switch yourself.

Which time of day?

Both work at any time of day.

For questions about a prescription or symptoms, speak with your own doctor or pharmacist. For website enquiries, contact our team.

General information only. It isn’t a substitute for advice from your doctor or pharmacist.

Source and further reading

MedlinePlus patient medicine information. This overview does not list every warning or interaction.

Tell your prescriber about pregnancy or breastfeeding before using a statin.

By the Medsmingle Team · Updated 13 November 2026

This is a prescription medicine. Only take it if it has been prescribed for you after a medical assessment, and follow your doctor’s and pharmacist’s instructions.

Hydrochlorothiazide (HCTZ) is a thiazide diuretic (“water pill”) used for high blood pressure and fluid retention. It’s often combined with other blood pressure medicines such as losartan or lisinopril.

How to take it

• Usually once a day, in the morning, so you aren’t up at night to pee
• Common doses are 12.5 to 25 mg

Side effects

• Peeing more often, especially at first
• Dizziness or light-headedness
• Low potassium or sodium (cramps, weakness, confusion)
• Raised blood sugar and uric acid; can trigger gout
• Increased sun sensitivity

Skin cancer advice

Hydrochlorothiazide is associated with a small increased risk of non-melanoma skin cancer. Do not stop prescribed treatment on your own. Use sunscreen, cover up, and check your skin regularly.

Get urgent help for

• Sudden eye pain or reduced vision (a rare eye reaction)
• Severe rash, fainting or confusion

Interactions

• Lithium (levels can rise)
• NSAIDs reduce its effect
• Diabetes medicines may need adjusting

Frequently asked questions

Do I need potassium supplements?

Only if a blood test shows low potassium and your doctor advises it.

For questions about a prescription or symptoms, speak with your own doctor or pharmacist. For website enquiries, contact our team.

General information only. It isn’t a substitute for advice from your doctor or pharmacist.

Source and further reading

MedlinePlus patient medicine information. This overview does not list every warning or interaction.

By the Medsmingle Team · Updated 13 November 2026

This is a prescription medicine. Only take it if it has been prescribed for you after a medical assessment, and follow your doctor’s and pharmacist’s instructions.

Metoprolol is a beta-blocker used for high blood pressure, angina, heart failure, irregular heart rhythms and after a heart attack.

Tartrate vs succinate

• Metoprolol tartrate (Lopressor): immediate-release, usually taken twice a day
• Metoprolol succinate (Toprol XL): extended-release, once a day, and the form proven for heart failure

They aren’t simply interchangeable; your doctor decides on the form and dose.

How it works

It slows the heart rate and reduces the force of the heart’s contractions, lowering blood pressure and oxygen demand.

Side effects

• Tiredness, especially at first
• Dizziness
• Cold hands and feet
• Slow heart rate
• Sleep problems or vivid dreams
• Erection problems in some men

Don’t stop suddenly

Stopping abruptly can trigger chest pain, a fast heart rate or even a heart attack. Your doctor will set an individual tapering plan.

Cautions

• Asthma or COPD: may worsen breathing
• Diabetes: can mask a fast heartbeat from low blood sugar
• Very slow pulse, fainting or worsening breathlessness or swollen ankles: contact your doctor

Interactions

• Verapamil and diltiazem (can slow the heart too much)
• Some antidepressants such as fluoxetine and paroxetine raise levels
• Clonidine (rebound risk if stopped)

Frequently asked questions

Should metoprolol be taken with food?

Regular tablets are generally taken with or just after meals. Instructions vary by formulation; follow the label and ask your pharmacist.

For questions about a prescription or symptoms, speak with your own doctor or pharmacist. For website enquiries, contact our team.

General information only. It isn’t a substitute for advice from your doctor or pharmacist.

Source and further reading

MedlinePlus patient medicine information. This overview does not list every warning or interaction.

By the Medsmingle Team · Updated 13 November 2026

This is a prescription medicine. Only take it if it has been prescribed for you after a medical assessment, and follow your doctor’s and pharmacist’s instructions.

Losartan (Cozaar) is an angiotensin receptor blocker (ARB) used for high blood pressure, to protect the kidneys in type 2 diabetes, and to lower stroke risk in people with an enlarged heart. It’s also combined with hydrochlorothiazide (Hyzaar).

How it works

It blocks angiotensin II, a hormone that tightens blood vessels, so vessels relax and blood pressure falls.

Losartan vs lisinopril

Both act on the same hormone system and lower blood pressure similarly. Losartan rarely causes the dry cough associated with lisinopril, so it’s a common switch. See lisinopril.

Dosing

Usually 50 mg once daily, adjusted between 25 and 100 mg. The full blood pressure effect takes 3 to 6 weeks.

Side effects

• Dizziness, especially when standing
• Tiredness
• Raised potassium
• Changes in kidney function, monitored with blood tests

Get urgent help for

• Swelling of the face, lips or throat
• Fainting
• Muscle weakness or irregular heartbeat (high potassium)

Important to know

• Not safe in pregnancy
• Avoid potassium supplements and salt substitutes unless advised
• NSAIDs such as ibuprofen can reduce its effect and stress the kidneys
• Do not add an ACE inhibitor or aliskiren yourself. Aliskiren with losartan is contraindicated in people with diabetes.

Frequently asked questions

Can I take losartan at night?

Yes; take it at the same time each day.

Does losartan cause weight gain?

It isn’t known to cause weight gain.

For questions about a prescription or symptoms, speak with your own doctor or pharmacist. For website enquiries, contact our team.

General information only. It isn’t a substitute for advice from your doctor or pharmacist.

Source and further reading

MedlinePlus patient medicine information. This overview does not list every warning or interaction.

By the Medsmingle Team · Updated 13 November 2026

An ED assessment usually begins with a conversation and examination, not a single pass-or-fail test. The aim is to understand symptoms, identify possible causes and choose safe next steps with you.

What to bring to your appointment

• A list of prescriptions, nonprescription medicines and supplements.
• A brief note of when symptoms began, whether they are occasional or persistent, and any changes in health.
• Your questions about privacy, treatment preferences and side effects.

Questions your clinician may ask

Expect questions about medical and sexual history, erections, medicines, alcohol, smoking and emotional or relationship concerns. These help put symptoms in context. An examination and selected blood tests may be suggested; additional tests depend on what the assessment shows.

Will everyone need an ultrasound?

No. Specialised tests are used selectively. Ask what a proposed test could show and whether its result would change treatment. Do not buy home tests or choose medicine strengths as a substitute for a clinical assessment.

After the assessment

Ask which possible causes need attention, what treatment options are appropriate, and when to return if symptoms persist. Bring up any cost or access concerns before starting treatment. Do not stop an existing medicine yourself because you think it may contribute to ED.

Read our guide to ED causes and treatment, or compare sildenafil and tadalafil to prepare questions for your prescriber.

Source

NIDDK: diagnosis of erectile dysfunction.

General information only; a qualified healthcare professional must assess your symptoms.