What Is Albon and What Does It Treat?
Albon is a brand name for sulfadimethoxine, a sulfonamide (“sulfa”) antibiotic used in dogs. Its best-known use is treating coccidiosis — an intestinal infection caused by single-celled coccidia parasites — and it is also used for certain susceptible bacterial infections.
Coccidiosis is especially common in puppies, dogs in shelters or kennels, and dogs under stress or in crowded conditions. The parasites damage the lining of the intestine and the classic sign is diarrhoea, which may be watery or contain mucus or blood, often alongside dehydration, weight loss, a poor appetite and lethargy.
Sulfadimethoxine is described as coccidiostatic — it does not directly kill the coccidia, but it stops them reproducing, halting the spread of infection so the dog’s own immune system can clear the parasites and the gut lining can heal. Albon does not work instantly, which is one reason a full course matters.
Albon is a prescription medicine. Use the calculator above to understand the typical dosing, but a veterinarian should confirm the diagnosis (usually with a faecal test) and set the prescription. For more detail, see PuppaDogs’ guide to Albon for dogs. Your vet may also discuss newer anti-coccidial options such as toltrazuril or ponazuril.
How the Albon Dosage Calculator Works
Albon uses a distinctive two-tier schedule: a higher dose on the first day, then a lower daily dose. The calculator:
- Works out the day-1 loading dose (25 mg/lb) and the day-2-onward maintenance dose (12.5 mg/lb).
- Converts each into your chosen tablet strength or the 5% oral suspension.
- Flags sulfa allergy and other sulfonamide-related cautions.
Enter your dog’s weight, select the form you have, tick any health considerations, then press Calculate Dose.
How Albon Doses Are Calculated for Dogs
The Loading-Dose Schedule
The standard label dosing for Albon in dogs is:
- Day 1 — loading dose: 25 mg per pound of body weight (about 55 mg/kg)
- Day 2 onward — maintenance dose: 12.5 mg per pound of body weight (about 27.5 mg/kg), once daily
The higher first-day dose builds an effective drug level quickly; the daily dose then maintains it. This is given once daily.
Treatment Length
Treatment is generally continued until the dog has been symptom-free for about 48 hours. In practice that often means a course of around 5–14 days for coccidiosis, though the exact length is set by your veterinarian based on the dog’s response. It is important to finish the full course even after the diarrhoea stops, so the infection is properly controlled.
Factors Your Vet Considers
- Liver and kidney function — sulfadimethoxine is processed and excreted by these organs.
- Hydration — well-hydrated dogs clear sulfa drugs more safely.
- Breed and history — a known sulfa sensitivity changes the plan entirely (see safety section).
Albon Dosage Chart for Dogs
This chart shows the day-1 loading dose and the day-2-onward daily dose. It is a reference only — your veterinarian’s prescription takes priority.
| Dog weight | Day 1 loading (25 mg/lb) | Day 2 onward (12.5 mg/lb daily) |
|---|---|---|
| 5 lb (2.3 kg) | 125 mg | 62.5 mg |
| 10 lb (4.5 kg) | 250 mg | 125 mg |
| 20 lb (9 kg) | 500 mg | 250 mg |
| 40 lb (18 kg) | 1,000 mg | 500 mg |
| 60 lb (27 kg) | 1,500 mg | 750 mg |
| 80 lb (36 kg) | 2,000 mg | 1,000 mg |
Albon Forms and Strengths
- Tablets: 125 mg, 250 mg and 500 mg, scored for splitting.
- 5% oral suspension: a flavoured liquid containing 250 mg per 5 mL (50 mg per mL) — convenient for puppies and small dogs.
- Concentrated solutions are also available for some uses.
How to Give Albon to Your Dog
- Give once daily, at roughly the same time each day.
- Encourage water intake. Good hydration is genuinely important with any sulfa drug — it helps prevent sulfonamide crystals forming in the urine.
- With food is fine and can reduce stomach upset; the suspension can be given directly or mixed with a little food.
- Shake the suspension well before measuring, and use a proper dosing syringe for accuracy.
- Finish the entire course even if the diarrhoea resolves early.
- Clean the environment. Coccidia spread through contaminated faeces — pick up stool promptly and disinfect the area to prevent reinfection.
Side Effects and Safety Warnings
Albon is usually well tolerated, but as a sulfonamide it carries some characteristic risks. Possible side effects include:
- Digestive upset — reduced appetite, vomiting or diarrhoea
- Dry eye (keratoconjunctivitis sicca, KCS) — sulfonamides can reduce tear production; watch for red, gloopy or irritated eyes
- Allergic and hypersensitivity reactions — skin rash, fever, joint swelling or lameness
- Blood-related effects — rarely, effects on red cells, white cells or platelets
- Crystalluria — sulfa crystals in the urine, which is why hydration matters
Contact your veterinarian promptly if you see dry or irritated eyes, a skin rash, fever, joint swelling or lameness, pale gums, or unusual bruising or bleeding.
When Albon Should Be Avoided or Used With Caution
- Known sulfa allergy or a previous reaction to a sulfonamide — Albon should not be used.
- Liver or kidney disease — needs dose adjustment and closer monitoring.
- A history of dry eye (KCS) — monitor tear production.
- Pregnant or nursing dogs — use only if the vet judges the benefit outweighs the risk.
- Some breeds, including Dobermans, are reported to be more prone to sulfonamide sensitivity reactions.
Always tell your veterinarian about every other medication your dog takes so interactions can be checked.
Overdose and Missed Doses
If your dog misses a dose, give it when you remember unless it is almost time for the next one — never double up. If you suspect an overdose or accidental ingestion, contact your veterinarian or an animal poison control service promptly, as large overdoses increase the risk of crystalluria and other sulfonamide effects.
Treatment Duration and Follow-Up
Most courses run until the dog has been symptom-free for about 48 hours. Your veterinarian may recommend a repeat faecal test after treatment to confirm the coccidia are controlled, particularly in puppies or multi-dog households. Combine medication with thorough environmental cleaning to break the reinfection cycle, and return to your vet if diarrhoea persists or recurs.
Conclusion
Albon (sulfadimethoxine) is an effective, long-established treatment for coccidiosis in dogs, using a simple but distinctive schedule: a 25 mg/lb loading dose on day 1, then 12.5 mg/lb once daily until the dog has been well for around 48 hours. The calculator above estimates both doses and converts them into tablets or liquid. Because Albon is a prescription sulfonamide with specific risks — sulfa allergy, dry eye and the need for good hydration — diagnosis, dosing and course length should always be guided by your veterinarian, and the full course completed alongside good environmental hygiene.
Frequently Asked Questions
How much Albon do I give my dog?
The standard Albon (sulfadimethoxine) schedule for dogs is a loading dose of 25 mg per pound of body weight on the first day, then 12.5 mg per pound once daily on the following days. For example, a 20 lb dog receives about 500 mg on day 1 and 250 mg daily afterwards. The course length is set by your veterinarian; use the calculator above for an estimate only.
How long does it take Albon to work in dogs?
Albon is coccidiostatic, meaning it stops coccidia from reproducing rather than killing them instantly, so it does not work immediately. Most dogs begin to improve within a few days, and treatment is usually continued until the dog has been symptom-free for about 48 hours – often a course of roughly 5-14 days. Always finish the full course.
What is Albon used for in dogs?
Albon is most commonly used to treat coccidiosis, an intestinal infection caused by coccidia parasites that often causes diarrhoea in puppies and dogs in kennels or shelters. It is also used for certain susceptible bacterial infections. A veterinarian should confirm the diagnosis, usually with a faecal test, before prescribing it.
Should Albon be given with food?
Albon can be given with or without food, but giving it with a little food can help if your dog experiences mild stomach upset. More importantly, make sure your dog drinks plenty of water throughout treatment, as good hydration helps prevent sulfonamide crystals from forming in the urine.
What are the side effects of Albon in dogs?
Possible side effects include digestive upset, reduced tear production leading to dry eye (KCS), and, less commonly, allergic reactions such as skin rash, fever or joint swelling, and rare effects on blood cells. Contact your vet if you see dry or irritated eyes, a rash, fever, lameness, pale gums or unusual bruising.
Can puppies take Albon?
Yes – coccidiosis is especially common in puppies, and Albon is frequently prescribed for them. The dose is still based on body weight (25 mg/lb on day 1, then 12.5 mg/lb daily), and the 5% oral suspension is often easier to dose accurately for small puppies. Always have a veterinarian confirm the diagnosis and prescribe the correct course.
References & Further Reading
The dosing ranges and safety information on this page are drawn from the following veterinary references. Always defer to your own veterinarian and the manufacturer’s label for your specific product.
- Albon (sulfadimethoxine) tablets and 5% oral suspension – approved veterinary label and dosing information. drugs.com/vet.
- Plumb DC. Plumb’s Veterinary Drug Handbook. 10th ed. Hoboken, NJ: Wiley-Blackwell, 2023 – sulfadimethoxine monograph.
- Merck Veterinary Manual. Coccidiosis in dogs and cats; sulfonamide antibacterial agents. merckvetmanual.com.
- Companion Animal Parasite Council (CAPC). Coccidia guidelines. capcvet.org.
- PuppaDogs. Albon for Dogs: Benefits, Dosage, Side Effects, and More. puppadogs.com.
