Guides
Evergreen guides on how often to worm, side effects, lungworm, how Biheldon compares to Drontal, Milbemax and Panacur, and the evidence behind "natural" worming. Every clinical guide cites primary sources (NOAH, EMA, ESCCAP) and lists them in full at the foot of the article.
Start here
If you're new to worming your pet, start with one of these.
Pillar guide
The right UK worming tablet depends on your dog or cat's lifestyle, your region's lungworm risk, and whether you need flea cover too. A decision tree across Biheldon, Drontal, Milbemax, Panacur and Bob Martin — with NOAH-cited actives and current prices.
Read the guide →Pillar guide
Flea products are monthly; wormers are quarterly. The schedules don't align — and that's expected. How to combine flea and worm treatment safely, when to stagger, and why two separate products usually beats an all-in-one for UK households.
Read the guide →Pillar guide
ESCCAP UK recommends every UK cat — including indoor cats — be wormed at least four times a year. Hunting cats need monthly worming. The full schedule, with kitten dosing and zoonotic-risk modifiers.
Read the guide →Pillar guide
Most adult UK dogs need worming every 3 months — but puppies, hunting/raw-fed dogs, and households with young children need a shorter cycle. The full schedule, with ESCCAP citations.
Read the guide →Pillar guide
Mild side effects after worming are rare and short-lived. This guide explains what to expect from praziquantel, pyrantel embonate, milbemycin and fenbendazole — and the red-flag symptoms that need a vet, not another dose.
Read the guide →A
Almost all puppies are born with Toxocara canis larvae transmitted from the dam. The UK standard schedule: first dose at 4 weeks, every 2 weeks to 12 weeks, monthly to 6 months, then quarterly. The full week-by-week plan with dosing guidance.
C
Kittens are born clear of Toxocara cati but acquire it from the queen's milk within days. The UK schedule: first dose at 3 weeks (earlier than puppies), every 2 weeks until 2 weeks post-weaning, monthly until 6 months. The full schedule with dosing.
D
Indoor cats can still acquire worms from fleas, rodents, raw food, the queen's milk, and even on owner shoes. ESCCAP UK recommends every 3 months minimum — the same as outdoor cats. The transmission routes, with citations.
E
Lungworm (Angiostrongylus vasorum) is endemic across much of the UK and can be fatal. Symptoms, transmission via slugs and snails, treatment options, and why a 3-monthly intestinal wormer like Biheldon is not enough protection.
F
Pregnancy worming protects puppies from Toxocara before they are born. The UK standard uses fenbendazole (Panacur) from day 40 of pregnancy to 2 days post-whelping. Biheldon is not the right product for this window — here is what is, and why.
H
Pumpkin seeds, diatomaceous earth, garlic, apple cider vinegar, coconut oil — an honest evidence review of the most-cited "natural" worming remedies for dogs, and which ones are unsafe.
I
Cats hide illness well, so worm symptoms often appear late. The five most common signs (visible segments, weight loss with normal appetite, dull coat, scooting, pot-belly), what counts as a vet emergency, and how to treat at home with Biheldon when appropriate.
Tapeworm segments look like rice grains. Roundworms are pale spaghetti. Hookworms are usually invisible. Whipworms are rare in UK dogs. A photo-led identification guide with what each worm means and which product treats it.
J
A UK faecal egg count costs £18.50 from Wormcount.com. Done quarterly it can target your worming to actual burden rather than the calendar. When this works, when it doesn't, and how Biheldon fits the targeted approach.
K
Biheldon and Drontal Cat share the same active ingredients. Drontal Dog adds febantel for whipworm cover. Side-by-side actives, parasites covered, and per-tablet prices — verified May 2026.
L
Biheldon and Panacur use different drug classes and cover different parasite gaps. Honest, NOAH-cited comparison: Biheldon for tapeworm + ascarid cover; Panacur for whipworm, Giardia, and lungworm in specific cases.
M
Milbemax is the only product among Biheldon, Drontal and Panacur with a UK lungworm licence — but it is prescription-only and 8× the per-tablet price. Honest comparison so you can choose the right product for your dog's region.
N
Frontline is a flea and tick treatment (fipronil) — it does not treat any kind of worm. If your search has been "Frontline for cats worms" you have run into a common search intent confusion. The honest explanation and what to use instead.
P
UK all-in-one cat products (NexGard Combo, Stronghold Plus) cost £8–£12 per pipette and need a vet prescription. Two separate products (a monthly flea spot-on + quarterly Biheldon) cover the same parasites for £40–£80 per year. The honest cost comparison.
Q
A 2.5 kg Chihuahua and a 50 kg Great Dane need very different doses of the same wormer. The UK weight-band approach, how Biheldon's scored tablets work for small dogs, and when XL formulations matter.
R
Praziquantel paralyses tapeworms within hours; pyrantel embonate paralyses roundworms in the same window. Dead worms typically appear in stool 24–48 hours after dosing. The full mechanism + onset timing for each major UK wormer active.
S
Six methods to give your dog a wormer tablet — from the simplest (hide in food) to the most reliable (manual administration). Which to try first, what to do if all of them fail, and how to use Biheldon's scored format to your advantage.
U
Wormer tablets are cheapest and most accurate. Spot-on wormers (Profender, Dronspot) suit cats who refuse tablets. Paste and liquid suit puppies and kittens under tablet weight. The honest pros and cons, with UK pricing.
Editorial policy
We're not veterinarians. We're an editorial team that translates primary sources into plain English. Here's what that means in practice.
Citations, not opinions
Every guide that makes a clinical claim cites NOAH Compendium datasheets, EMA SPCs, ESCCAP UK guidance, or peer-reviewed parasitology — listed in full at the foot of each article so you can verify anything we say.
Honest about limits
Biheldon doesn't cover lungworm, whipworm, fleas, ticks, or mites — and we say so on every relevant guide, with a link to the product that does.
Vet review
Our guides are not a substitute for veterinary advice. If your pet is unwell, pregnant, on long-term medication, or you're unsure about dosing, contact your vet before treating.
Biheldon — praziquantel + pyrantel embonate wormer for dogs and cats. 30 scored tablets, £14.99, tracked international shipping.