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Sudafed Sinus Max Strength – 16 Capsules

Sudafed Sinus Max Strength – 16 Capsules

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  • ✔️ Relieves sinus congestion, headache, and facial pressure fast
  • ✔️ Dual-action formula targets both congestion and fever simultaneously
  • ✔️ Contains pseudoephedrine 60 mg for effective nasal decongestion
  • ✔️ Paracetamol 500 mg reduces fever and eases sinus pain
  • ✔️ Convenient 16-capsule pack for multi-day symptom relief

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What Is Sudafed Sinus Max Strength and How Does It Help?

 

When a cold or sinus infection takes hold, the pressure behind your eyes, the blocked nose, and the dull ache across your forehead can make even a normal day feel exhausting. Sudafed Sinus Max Strength is an over-the-counter combination medicine designed to tackle exactly that cluster of symptoms — congestion, sinus pain, headache, and fever — all in one capsule. Each pack contains 16 capsules, making it a practical option to keep at home during the cold and flu season. You can browse our full range of cold and flu remedies if you need additional support alongside this product.

Each capsule contains two active ingredients: pseudoephedrine hydrochloride 60 mg and paracetamol 500 mg. Together, they address both the underlying congestion and the pain or fever that so often accompanies it. It is classified as a Pharmacy (P) medicine in the UK, meaning it is available without a prescription but should be purchased from a registered pharmacy where a pharmacist is available to offer guidance.

 

How Does Sudafed Sinus Max Strength Work in the Body?

 

Understanding how a medicine works can help you use it more confidently. Sudafed Sinus Max Strength works through two distinct mechanisms acting at the same time:

  • Pseudoephedrine hydrochloride is a sympathomimetic decongestant. It stimulates alpha-adrenergic receptors in the blood vessel walls lining the nasal mucosa, causing vasoconstriction — essentially narrowing the blood vessels. This reduces swelling and mucus production in the nasal passages, making it easier to breathe.
  • Paracetamol works centrally to inhibit prostaglandin synthesis in the brain, which lowers body temperature during fever. It also raises the pain threshold, relieving the headache and facial pressure that often accompany sinus congestion.
  • The two ingredients complement each other — one targets the physical blockage, the other addresses the pain and systemic symptoms.
  • Onset of action for pseudoephedrine is typically within 30 minutes of an oral dose, with effects lasting up to four to six hours.

 

Who Is Sudafed Sinus Max Strength Suitable For?

 

This product is intended for adults and children aged 12 years and over. It is particularly useful for people experiencing sinus congestion alongside pain or fever — for example, during a cold, flu, or acute sinusitis episode. That said, it is not appropriate for everyone, and there are important groups who should avoid it.

Sudafed Sinus Max Strength may be suitable if you:

  • Are aged 12 or over and experiencing nasal or sinus congestion
  • Have a headache, facial pain, or mild fever alongside your congestion
  • Do not have high blood pressure, heart disease, or hyperthyroidism
  • Are not currently taking MAOIs, tricyclic antidepressants, or other paracetamol-containing products

 

How Does Sudafed Sinus Max Strength Compare to Similar Products?

 

Feature Sudafed Sinus Max Strength Plain Paracetamol 500 mg
Active ingredients Pseudoephedrine 60 mg + Paracetamol 500 mg Paracetamol 500 mg only
Treats congestion Yes No
Treats pain and fever Yes Yes
Suitable for hypertension No Yes (with caution)

 

How Should You Store Sudafed Sinus Max Strength?

 

Store Sudafed Sinus Max Strength below 25°C in a dry place, away from direct sunlight. Keep the capsules in their original blister packaging until you are ready to use them. Always keep medicines out of the sight and reach of children — this is especially important with products containing paracetamol, as accidental overdose in children can be serious. Do not use the capsules after the expiry date printed on the pack. If you are looking for other products to support your recovery, our pain relief collection includes a range of options suitable for different needs.

This product is a medicine. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

Sudafed Sinus Max Strength 16 Capsules specifications
Treatment category Decongestant and analgesic
Mechanism of action Sympathomimetic vasoconstriction (pseudoephedrine); central prostaglandin inhibition (paracetamol)
Effective for Sinus congestion, sinus headache, facial pain, fever associated with colds and sinusitis
Suitable for Adults and children aged 12 and over
Active ingredient Pseudoephedrine hydrochloride 60 mg, Paracetamol 500 mg
Pack size 16 capsules
UK classification Pharmacy (P) medicine
Drug class Sympathomimetic decongestant + analgesic/antipyretic
Preparation Hard capsule
Route of administration Oral

Specifications of Sudafed Sinus Max Strength 16 Capsules

 

What Is Sudafed Sinus Max Strength and What Is It Used For?

 

Sudafed Sinus Max Strength 16 capsules is a combination over-the-counter medicine used to relieve the symptoms of sinus congestion, sinus headache, facial pain, and fever. It is commonly used during colds, flu, and acute sinusitis. Each capsule contains pseudoephedrine hydrochloride 60 mg (a nasal decongestant) and paracetamol 500 mg (a pain reliever and fever reducer). It is a Pharmacy (P) medicine, available without a prescription from a registered UK pharmacy.

 

What Do You Need to Know Before Using Sudafed Sinus Max Strength?

 

Before taking this medicine, it is important to check whether it is safe for you. Do not take Sudafed Sinus Max Strength if any of the following apply to you:

  • You are allergic to pseudoephedrine, paracetamol, or any other ingredient in the capsules
  • You have high blood pressure (hypertension) or severe hypertension
  • You have coronary artery disease or other heart conditions
  • You have hyperthyroidism (overactive thyroid)
  • You have phaeochromocytoma (a type of adrenal gland tumour)
  • You have severe kidney or liver disease
  • You are taking or have taken monoamine oxidase inhibitors (MAOIs) within the last 14 days
  • You are pregnant or breastfeeding — seek medical advice first
  • You are under 12 years of age

The following medicines may interact with Sudafed Sinus Max Strength. Tell your pharmacist or doctor if you are taking:

  • MAOIs or moclobemide — risk of hypertensive crisis
  • Tricyclic antidepressants (e.g. amitriptyline) — may increase cardiovascular effects
  • Other sympathomimetics (e.g. other decongestants, appetite suppressants)
  • Other products containing paracetamol — risk of exceeding the safe daily dose
  • Warfarin or other anticoagulants — regular paracetamol use may affect INR
  • Antihypertensive medicines — pseudoephedrine may reduce their effectiveness

 

How Should You Take Sudafed Sinus Max Strength?

 

Always take this medicine exactly as described in the patient information leaflet or as directed by your pharmacist. Swallow the capsules whole with a glass of water. Do not crush or chew them.

  1. Check that you are not allergic to any of the ingredients before taking your first dose.
  2. Swallow one capsule whole with a full glass of water.
  3. Wait at least four hours before taking your next dose.
  4. Do not take more than four capsules in any 24-hour period.
  5. Do not take alongside any other paracetamol-containing product.
  6. If symptoms do not improve within five days, stop use and consult your GP.
Age Group Dose Frequency Maximum daily dose
Adults and children aged 12+ 1 capsule Up to 4 times daily 4 capsules (2 g paracetamol / 240 mg pseudoephedrine)
Children under 12 Not suitable — do not use

If you are managing other symptoms alongside sinus congestion, our ear, nose and throat collection includes a range of complementary products that may help.

 

What Are the Possible Side Effects of Sudafed Sinus Max Strength?

 

Like all medicines, Sudafed Sinus Max Strength can cause side effects, although not everyone experiences them. The NHS advises that you stop taking a medicine and seek medical advice if you develop a serious reaction.

Common side effects (may affect up to 1 in 10 people):

  • Difficulty sleeping (insomnia)
  • Increased heart rate (palpitations)
  • Dry mouth
  • Headache (if not already present)
  • Nausea

Less common side effects (may affect up to 1 in 100 people):

  • Dizziness or light-headedness
  • Anxiety or restlessness
  • Urinary retention (difficulty passing urine) — particularly in men with an enlarged prostate
  • Skin rash or itching
  • Raised blood pressure

Serious allergic reactions (anaphylaxis) are rare but require immediate medical attention. Signs include swelling of the face, lips, or throat, difficulty breathing, or a severe skin reaction. Stop taking the capsules immediately and call 999 if this occurs.

 

How Should You Store Sudafed Sinus Max Strength?

 

  • Store below 25°C in a dry place away from direct heat and sunlight
  • Keep in the original blister packaging until use
  • Keep out of the sight and reach of children at all times
  • Do not use after the expiry date printed on the pack
  • Do not dispose of medicines via wastewater or household waste — return unused capsules to your pharmacy

If you are also managing hay fever or allergic rhinitis alongside your sinus symptoms, you may find our allergy and hay fever collection useful for additional support.

Written and reviewed by our qualified team

Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Frequently Asked Questions

Where can I buy Sudafed Sinus Max Strength online in the UK?

You can buy Sudafed Sinus Max Strength 16 capsules online from Cured Pharmacy, a GPhC-registered UK online pharmacy, for just £4.89. It is also available from most high street pharmacies and supermarkets as an over-the-counter Pharmacy (P) medicine. Because it contains pseudoephedrine, it must be sold by or under the supervision of a pharmacist.

How does Sudafed Sinus Max Strength work in the body?

Sudafed Sinus Max Strength contains two active ingredients that work together. Pseudoephedrine hydrochloride causes vasoconstriction in the nasal blood vessels, reducing swelling and mucus to relieve congestion. Paracetamol inhibits prostaglandin synthesis in the brain, lowering fever and relieving sinus headache and facial pain at the same time.

What is the correct dose of Sudafed Sinus Max Strength for adults?

Adults and young people aged 12 and over should take one capsule up to four times a day, leaving at least four hours between each dose. The maximum is four capsules in any 24-hour period. Never exceed this dose, as doing so increases the risk of paracetamol overdose, which can cause serious liver damage.

Can I take Sudafed Sinus Max Strength with ibuprofen?

There is no known direct interaction between pseudoephedrine and ibuprofen, but you should check with your pharmacist before combining them. Ibuprofen can raise blood pressure slightly, and since pseudoephedrine also has this effect, the combination may not be suitable for everyone. If you need additional pain relief options, browse our pain relief collection for alternatives.

Is Sudafed Sinus Max Strength safe to take during pregnancy?

Sudafed Sinus Max Strength is not recommended during pregnancy without medical advice. Pseudoephedrine may reduce blood flow to the placenta, and its safety in pregnancy has not been fully established. If you are pregnant and suffering from sinus congestion, speak to your GP or midwife before taking any decongestant medicine.

Can people with high blood pressure take Sudafed Sinus Max Strength?

No — Sudafed Sinus Max Strength is not suitable for people with high blood pressure (hypertension). Pseudoephedrine is a sympathomimetic agent that can raise blood pressure and heart rate, which could be dangerous in people with pre-existing cardiovascular conditions. Your pharmacist can recommend a pseudoephedrine-free alternative if needed.

What are the side effects of Sudafed Sinus Max Strength?

Common side effects include insomnia, increased heart rate, dry mouth, and nausea. Less commonly, some people experience dizziness, anxiety, urinary retention, or a skin rash. If you develop signs of a serious allergic reaction — such as facial swelling, difficulty breathing, or a severe rash — stop taking the capsules immediately and seek emergency medical help.

How long can you take Sudafed Sinus Max Strength for?

You should not take Sudafed Sinus Max Strength for more than five consecutive days without seeking medical advice. If your symptoms have not improved within this time, it is important to see your GP, as persistent sinusitis may require a different treatment approach such as a nasal corticosteroid spray or antibiotics if a bacterial infection is confirmed.

What happens if I accidentally take too much Sudafed Sinus Max Strength?

Taking too much paracetamol — even if you feel well — can cause serious liver damage that may not become apparent for several days. If you think you or someone else has taken more than the recommended dose, go to your nearest A&E or call 999 immediately. Do not wait for symptoms to appear before seeking help.

Can I take Sudafed Sinus Max Strength if I am breastfeeding?

Pseudoephedrine passes into breast milk and may reduce milk supply, so Sudafed Sinus Max Strength is generally not recommended while breastfeeding. Paracetamol alone is considered safe during breastfeeding at recommended doses. Always speak to your pharmacist or GP before taking any medicine while breastfeeding.

What are the alternatives to Sudafed Sinus Max Strength?

If pseudoephedrine is not suitable for you, alternatives include plain paracetamol or ibuprofen for pain and fever, saline nasal rinses for congestion, or xylometazoline nasal sprays for short-term decongestant relief. You can explore a wider range of options in our ear, nose and throat collection. Always check with your pharmacist which option is most appropriate for your circumstances.

Can I drive after taking Sudafed Sinus Max Strength?

Sudafed Sinus Max Strength does not typically cause drowsiness, unlike some antihistamine-based cold remedies. However, pseudoephedrine can occasionally cause dizziness or anxiety in some people, which could affect your ability to drive safely. If you notice any such effects after taking the capsules, do not drive or operate machinery until they have passed.

Is Sudafed Sinus Max Strength suitable for children?

Sudafed Sinus Max Strength is not suitable for children under 12 years of age. For younger children with cold and sinus symptoms, speak to your pharmacist or GP about age-appropriate alternatives. Our baby and toddler collection includes products specifically formulated for younger children.

What is the difference between Sudafed Sinus Max Strength and regular Sudafed?

Regular Sudafed products may contain pseudoephedrine alone or in different strengths, whereas Sudafed Sinus Max Strength combines pseudoephedrine 60 mg with paracetamol 500 mg in each capsule. This makes it a dual-action product targeting both congestion and pain or fever simultaneously, which is particularly useful when sinus symptoms are accompanied by a headache or raised temperature.

What are the latest guidelines on using decongestants like pseudoephedrine?

Current NHS and MHRA guidance recommends that oral decongestants containing pseudoephedrine should be used for the shortest time necessary — typically no more than five days — and avoided in people with cardiovascular conditions, hypertension, or hyperthyroidism. The MHRA continues to monitor the safety profile of pseudoephedrine-containing products, and pharmacists are required to assess suitability before sale. Always follow the advice of your pharmacist or GP when using this type of medicine.

How Should You Use Sudafed Sinus Max Strength?

Sudafed Sinus Max Strength capsules are taken orally with a full glass of water. Swallow each capsule whole — do not crush, chew, or open the capsule. Taking it with food is not required, but if you find it causes any stomach discomfort, taking it with a light meal or snack may help.

Follow these steps each time you take a dose:

What Is the Correct Dose of Sudafed Sinus Max Strength?

The recommended dose for adults and children aged 12 and over is one capsule, taken up to four times in a 24-hour period. Always leave a minimum of four hours between doses. Do not take more than four capsules in any 24-hour period, as exceeding the recommended paracetamol dose can cause serious liver damage — even if you feel well at the time.

When Is the Best Time to Use Sudafed Sinus Max Strength?

There is no single "best" time of day to take Sudafed Sinus Max Strength, but timing your doses thoughtfully can help you get the most benefit. Because pseudoephedrine can cause insomnia in some people, it is generally advisable to avoid taking a dose close to bedtime. Taking your last dose of the day in the early evening — at least four to six hours before you plan to sleep — may help reduce the risk of sleep disturbance.

If your symptoms are worst in the morning, taking your first dose shortly after waking can help you manage congestion and discomfort through the day. Space your remaining doses evenly across the day to maintain consistent symptom relief.

How Long Can You Use Sudafed Sinus Max Strength For?

Sudafed Sinus Max Strength should not be used for more than five consecutive days. If your sinus symptoms persist beyond this period, it is important to consult your GP, as ongoing symptoms may indicate a bacterial sinus infection or another underlying condition that requires a different treatment. Prolonged use of decongestants beyond the recommended duration is not advised.

If you are managing a recurring condition such as allergic rhinitis rather than an acute cold or sinusitis episode, speak to your pharmacist or GP about longer-term management strategies, which may include nasal corticosteroid sprays or antihistamines.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

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What Are the Most Common Side Effects of Sudafed Sinus Max Strength?

Most people tolerate Sudafed Sinus Max Strength well when taken at the recommended dose, but some side effects can occur. The most frequently reported are related to the stimulant properties of pseudoephedrine, which acts on the sympathetic nervous system.

  • Difficulty sleeping (insomnia)
  • Increased heart rate (palpitations or tachycardia)
  • Dry mouth
  • Nausea
  • Headache (if not already present as a symptom)

What Are the Less Common Side Effects of Sudafed Sinus Max Strength?

Less commonly, some people experience side effects that are more noticeable or disruptive. These are still generally mild and tend to resolve once you stop taking the medicine, but you should mention them to your pharmacist if they concern you.

  • Dizziness or light-headedness
  • Anxiety, restlessness, or irritability
  • Urinary retention — particularly in men with an enlarged prostate (benign prostatic hyperplasia)
  • Skin rash or itching
  • Raised blood pressure
  • Tremor or shakiness

What Are the Serious Side Effects of Sudafed Sinus Max Strength?

Serious side effects are rare but require immediate medical attention. A severe allergic reaction (anaphylaxis) can occur with any medicine, including this one. Signs include sudden swelling of the face, lips, tongue, or throat, difficulty breathing, a rapid drop in blood pressure, or a widespread skin reaction. If you experience any of these, stop taking the capsules immediately and call 999 or go to your nearest A&E.

Paracetamol overdose — even accidental — is a medical emergency. Liver damage from paracetamol may not cause obvious symptoms for 24 to 72 hours after the overdose, by which time serious harm may already have occurred. If you suspect you have taken too much, seek emergency help immediately without waiting for symptoms.

What Should You Do If You Experience Side Effects of Sudafed Sinus Max Strength?

For mild side effects such as insomnia or dry mouth, reducing your dose or avoiding taking the medicine close to bedtime may help. If side effects are persistent, troublesome, or unexpected, stop taking the capsules and speak to your pharmacist or GP. You can also report suspected side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk.

Never take an extra dose to compensate for a missed one, and never take more than the stated maximum daily dose in an attempt to get faster relief.

Can Sudafed Sinus Max Strength Interact With Other Medicines?

Yes — this product has several clinically significant interactions. Pseudoephedrine must not be taken with MAOIs (including moclobemide) or within 14 days of stopping them, as this combination can cause a dangerous hypertensive crisis. Tricyclic antidepressants may also enhance the cardiovascular effects of pseudoephedrine. Taking this product alongside other paracetamol-containing medicines — including many other cold and flu remedies — risks exceeding the safe daily paracetamol dose. Pseudoephedrine may also reduce the effectiveness of antihypertensive medicines. Always tell your pharmacist about every medicine, supplement, or herbal remedy you are taking before starting Sudafed Sinus Max Strength.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

📖 Find out more about our team of medical content authors and how we ensure the accuracy of our content with our content guidelines.

Content last updated: 31 Mar 2025

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