If you’ve been advised to use a high fluoride toothpaste, the next question is usually: “Do I need 2800 ppm or 5000 ppm?” In the UK, Duraphat is a well-known brand name for prescription-strength fluoride toothpaste, and the two common strengths are Duraphat 2800 and Duraphat 5000.

This article compares the two strengths in a practical way: who each one is for, what the age limits mean, how they’re commonly used day-to-day, and how to choose the right option without guessing. It’s educational information and does not replace personalised advice from a dentist or prescriber.

Table of Contents

Where this fits on MedCare

On MedCare, high fluoride toothpaste options are grouped inside the Dental & Oral prescription treatments category and the dedicated High Fluoride Toothpaste hub (Toothpaste POM).

Quick answer: 2800 vs 5000 in one minute

Most of the decision comes down to two things: your age and your decay (caries) risk.

• Duraphat 2800 (2800 ppm fluoride) is usually used for people aged 10+ who need stronger-than-standard protection but don’t meet the typical criteria for 5000 ppm.
• Duraphat 5000 (5000 ppm fluoride) is typically for people aged 16+ with higher caries risk, multiple or recurrent cavities, root caries risk, significant dry mouth, or other strong risk drivers.

If you are under 16, 5000 ppm is not appropriate. If you are unsure, the safe approach is to follow the prescriber’s eligibility decision rather than trial-and-error.

Duraphat 2800 vs 5000: key differences

Fluoride strength: 2800 ppm vs 5000 ppm. 5000 provides a higher fluoride concentration on tooth surfaces.
Typical age eligibility: 2800 is generally for age 10+; 5000 is generally for age 16+.
Risk level targeted: 2800 fits ‘increased risk’; 5000 fits ‘high risk’ or ‘multiple/recurrent caries’ profiles.
How it’s often used: 2800 is commonly twice daily; 5000 is often used after meals, up to three times daily (as prescribed).
Best-fit scenarios: 2800 often for braces, early recurrent caries, or moderate risk; 5000 often for dry mouth, root caries, multiple fillings, or repeated new decay despite good routines.
Safety focus: Both require spit-don’t-rinse technique; age restrictions and avoiding swallowing are even more critical with 5000.

What does ppm mean in toothpaste?

ppm means parts per million and is used to express fluoride concentration in toothpaste. Most standard adult toothpastes are around 1350-1500 ppm fluoride. High fluoride toothpastes are usually 2800 ppm or 5000 ppm. The goal is not ‘more for everyone’ it’s ‘more for the right risk level’. For low-risk patients, standard toothpaste plus good technique is usually enough, and extra-strength fluoride is unnecessary.

Who Duraphat 2800 is usually for

Duraphat 2800 is often used when a clinician identifies increased decay risk but the patient doesn’t need the highest-strength option. Common situations include:

You are aged 10+ and have had new cavities recently or have a history of decay.
You have braces or retainers and need extra protection against ‘white spot’ lesions.
You have early enamel weakness (chalky areas) and want to slow progression.
Your diet pattern includes frequent snacks or sugary drinks and you’re working on reducing frequency.
You have mild-to-moderate dry mouth or mouth-breathing habits that increase risk.
You have gum recession with some exposed roots but not severe or rapidly progressing root decay.

If you want a full usage routine, see the 2800 ppm fluoride toothpaste: who it’s for and how to use it (HF2)

Who Duraphat 5000 is usually for

Duraphat 5000 is typically used for higher-risk adults and adolescents (16+) who need maximum topical fluoride support. Common situations include:

You are aged 16+ and keep getting new cavities despite brushing twice daily.
You have multiple fillings or a history of recurrent decay around old fillings.
You have significant dry mouth (xerostomia) due to medications or health factors.
You have exposed roots (gum recession) with root caries risk or early root decay.
You are undergoing dental or orthodontic treatment and have multiple risk factors combined.
Your dentist has identified a high caries risk profile and wants a stronger protective baseline.

For a deep dive on 5000 ppm, see:

5000 ppm fluoride toothpaste: who needs it and how to use it (HF1)

Why the age limits matter (10+ and 16+)

Age thresholds aren’t just arbitrary rules. They exist mainly to reduce the risk of swallowing high-fluoride toothpaste and to limit long-term overexposure in children. Younger children are more likely to swallow toothpaste, and their teeth are still developing. That’s why high fluoride toothpaste is not a ‘family toothpaste’ and should never be shared between siblings or household members.

Practical takeaway: if someone in the home is using a 2800 or 5000 ppm toothpaste, store it safely and treat it like a prescribed medicine.

How the routines differ (what most people actually do)

Both strengths work best when fluoride stays on the teeth after brushing. That’s why ‘spit, don’t rinse’ is a core rule. But the day-to-day routines often differ based on the strength and risk profile:

Duraphat 2800 is commonly used like a ‘stronger standard toothpaste’ usually morning and night, replacing normal toothpaste.

Duraphat 5000 is often used after meals (sometimes up to three times daily) because higher-risk patients benefit from more frequent fluoride exposure across the day. Not everyone needs that frequency; your prescriber decides the plan.

In both cases, it’s better to use the correct plan consistently than to use a stronger toothpaste inconsistently.

Technique that makes either strength work

Regardless of strength, the protection you get depends on technique. Use these rules unless your clinician has told you otherwise:

Brush carefully on all tooth surfaces, especially along the gumline and around plaque traps (brackets, crowded teeth).
Use interdental cleaning (floss or interdental brushes). Toothpaste doesn’t replace cleaning between teeth.
Spit out excess foam. Do not swallow.
Avoid rinsing with water straight after brushing.
Avoid eating or drinking immediately after brushing when possible (a short ‘no food/drink window’ helps fluoride stay on teeth).
Keep mouthwash at a different time from brushing if you use it (don’t ‘wash away’ the fluoride film).

When people step up from 2800 to 5000 (and when they step down)

Clinicians often think of 2800 and 5000 as steps on a ladder. You might start with 2800 if your risk is increased but not extreme, then move to 5000 if cavities keep appearing or the risk picture worsens (for example, dry mouth becomes more severe). Equally, people can step down if the main drivers improve.

Examples of stepping up:
• You were on 2800, but you still developed new cavities at the next check-up.
• Your dry mouth worsened due to medication changes and your dentist wants stronger protection.
• Root surfaces became more exposed and your clinician wants more fluoride support.

Examples of stepping down:
• You completed braces, improved cleaning, reduced sugar frequency, and your risk drops.
• Your dentist confirms you have had no new decay for a sustained period.
• You used 5000 during a high-risk period (e.g., dry mouth flare) and then transition back to standard or 2800.

The safest approach is review-based change, not self-directed switching.

Duraphat vs ‘Sodium Fluoride’ toothpaste: is there a difference?

On MedCare you’ll see both the Duraphat brand and generic sodium fluoride versions at 2800 ppm and 5000 ppm. In most cases, the active ingredient and strength are the deciding factors. People choose based on prescriber preference, availability, and what is listed for them.

If your prescription specifies a strength and form, follow that. If it specifies an option like ‘sodium fluoride 2800 ppm’ or ‘sodium fluoride 5000 ppm’, your prescriber has already focused the decision on the strength.

Product options (MedCare):

Safety, side effects, and ‘too much fluoride’ concerns

High fluoride toothpaste is generally well tolerated when used correctly, but safety rules matter. The main avoidable risk is swallowing toothpaste, especially in younger users. This is why age limits exist and why you should never share prescription toothpaste.

Some people can experience mouth irritation, sensitivity, or allergy-type symptoms to ingredients (flavourings, preservatives). If you get swelling, widespread rash, or breathing symptoms, stop use and seek urgent medical help.

If you swallowed a large amount and develop stomach symptoms (vomiting, diarrhoea, abdominal pain), seek medical advice. For long-term use, avoid stacking multiple fluoride products (supplements, gels, etc.) unless a clinician has assessed your total intake.

A simple decision framework you can use (without guessing)

Use this as a checklist to understand what your prescriber is deciding:

Step 1: Age check. If under 16, 5000 ppm is usually not an option. If under 10, 2800 ppm is not appropriate.
Step 2: Risk level. Do you have recurrent cavities, multiple fillings, dry mouth, or root caries risk? (points toward 5000 if 16+).
Step 3: Complexity. Are there multiple risk drivers at the same time (dry mouth + braces + high sugar frequency)? (often points higher).
Step 4: Practical routine. Can you follow the plan consistently (spit, don’t rinse; correct timing)? (consistency beats strength).
Step 5: Review. Your dentist/prescriber should review results and adjust strength, not you.

When toothpaste isn’t enough: red flags to get checked

High fluoride toothpaste prevents or slows decay, but it does not treat dental emergencies or existing deep cavities. Seek prompt dental advice if you have: facial swelling, spreading gum swelling, severe toothache that wakes you at night, fever/unwell with dental pain, swelling under the jaw, or difficulty swallowing or breathing.

FAQs

Can I start with 5000 to get faster results?

Don’t self-upgrade. 5000 ppm is not ‘better for everyone’ it is age-restricted and usually reserved for higher-risk profiles. Use the strength your prescriber approves and focus on technique.

If I’m 16+ does that mean I should use 5000?

No. Age only opens the eligibility door; it doesn’t define your risk level. Some 16+ patients are low-risk and do well on standard toothpaste.

Is Duraphat the only option?

No. On MedCare you’ll also see sodium fluoride versions at the same strengths. The key is the fluoride strength and the plan given by the prescriber.

Do I still need floss or interdental brushes?

Yes. Fluoride helps protect surfaces, but plaque between teeth and along the gumline still needs mechanical cleaning.

Can I use mouthwash too?

Yes, but don’t use it immediately after brushing. Keep mouthwash at a different time so you don’t wash away the fluoride layer.