Deworming + Bacterial Flushing Guide: Complete 8-Day Protocol
TL;DR: Deworm chickens every 2 months as maintenance (monthly in rainy season), always via the same 8-day sequence — Wormal Day 1, Premoxil flush Days 2-4, a rest day, then Vitmin Pro recovery Days 6-8. Skipping the flush or recovery is the most common mistake, and leaves the gut worse off than before.
Why Is Deworming Necessary?
Internal parasites (worms) are silent killers. You won’t always see them, but they gradually siphon nutrients — causing your birds to lose weight despite eating well, egg production to drop, and overall performance to decline. Regular deworming is not optional; it’s a baseline health task on the same level as vaccination. The risk climbs during rainy season, when wet soil and more snails, slugs, and beetles carrying tapeworms are around, and it climbs further in an overcrowded coop or one where droppings aren’t cleaned out regularly.
Why Is a Bacterial Flush Needed After Deworming?
A bacterial flush is the process of clearing harmful bacteria from the bird’s system using an antibiotic at the proper dosage.
Why is it done after deworming? When worms die inside the intestines, they release bacteria as they decompose. This creates an opportunity for secondary bacterial infection. The antibiotic flush cleans up this mess so the bird can properly absorb nutrients again.
What Are the Signs Your Bird Has Worms?
Weight loss despite normal eating, a pale comb, ruffled feathers, and loose droppings are the clearest signs.
| Sign | How to Check |
|---|---|
| Weight loss despite eating | Feel the breast — if the keel bone is clearly visible, worms are suspected |
| Pale comb and wattles | Pale pink or nearly white instead of bright red |
| Ruffled, dull feathers | Feathers lack shine and appear disheveled |
| Diarrhea or loose droppings | Check droppings daily |
| Visible worms in droppings | White strands like spaghetti (roundworms) or flat segments (tapeworms) |
| Lethargic, reluctant to move | Hunched posture, drooping wings |
| Decreased egg production | In broodhens |
You won’t always see worms in the droppings. Even if no worms are visible, if symptoms are present, go ahead and deworm.
What Does the Complete 8-Day Protocol Look Like?
Deworming alone isn’t enough — worms release bacteria into the gut as they die, so the proper sequence is Deworm → Bacterial Flush → Rest → Recovery, not deworming on its own. This is the same sequence built into the priming protocol breeders run before pairing broodcocks and broodhens.
The tablet and per-gallon amounts below are sized for typical gamefowl body weight at each age. A layer, native chicken, or broiler can weigh noticeably more or less than a gamefowl at the same age, so weigh your bird and follow the product label rather than matching by age alone.
Day 1: Deworm (Wormal)
| Time | Action |
|---|---|
| Morning (6–7 AM) | Administer the Wormal tablet orally — ½ tablet for 2-month-old birds, 1 full tablet for adults |
| After | Return to the coop. Provide plain, clean water. |
| Throughout the day | Observe droppings — you may see expelled worms (this is normal, it means the treatment is working). |
| Feeding | Normal feeding schedule. Wormal can be given without fasting. |
Days 2–4: Bacterial Flushing (Premoxil)
| Time | Action |
|---|---|
| Morning (7–8 AM) | Mix Premoxil in water — 5g (1 sachet) per gallon (4L) of water. This is the prevention dose — you’re flushing, not treating an active infection. |
| Throughout the day | This is their only water source. Remove all other water. |
| Daily | Prepare fresh Premoxil water every morning. Never reuse yesterday’s mix. |
Administer Premoxil for 3 days (Days 2, 3, and 4).
Why morning? Birds are thirstiest in the morning after waking up. They’ll drink more medicated water in the morning and midday than in the afternoon.
Day 5: Rest
| Time | Action |
|---|---|
| All day | Plain water only. No medication. Let their systems rest. Normal feeding. |
Days 6–8: Recovery (Vitmin Pro)
| Time | Action |
|---|---|
| Morning (7–8 AM) | Mix Vitmin Pro in water — 10g (2 tsp) per gallon (4L) of water. Double dose for recovery. |
| Throughout the day | This is their drinking water for the day. |
| Feeding | Normal feeding schedule. |
This restores good gut bacteria, vitamins, and minerals lost due to the dewormer and antibiotic — the same role supplements and vitamins play the rest of the year, just at a higher dose for recovery.
Day 9+: Back to Normal
Return to the regular Vitmin Pro schedule — 5g per gallon, 3x a week (Mon/Wed/Fri).
Be honest about the commitment. A half-finished protocol — skipping the rest day, reusing yesterday’s medicated water — clears some bacteria but not enough, and is often worse than skipping the flush outright. If a bird keeps showing worm signs despite a properly run cycle, that’s a vet visit, not another round of the same product.
What’s a Quick-Reference Version of the 8-Day Schedule?
| Day | What to Give | Dosage | When |
|---|---|---|---|
| Day 1 | Wormal (dewormer) | ½ tablet (2-month-old); 1 tablet (adult) | Morning, orally |
| Day 2 | Premoxil (bacterial flush) | 5g per gallon of water | Morning, in water all day |
| Day 3 | Premoxil | 5g per gallon of water | Morning, in water all day |
| Day 4 | Premoxil | 5g per gallon of water | Morning, in water all day |
| Day 5 | Plain water (rest) | — | All day |
| Day 6 | Vitmin Pro (recovery) | 10g per gallon of water | Morning, in water all day |
| Day 7 | Vitmin Pro | 10g per gallon of water | Morning, in water all day |
| Day 8 | Vitmin Pro | 10g per gallon of water | Morning, in water all day |
| Day 9+ | Back to normal | Vitmin Pro 5g/gallon, 3x/week | — |
How Do You Administer the Wormal Tablet Safely?
Restrain the bird, tuck it under your arm, and place the tablet at the back of the tongue — past the tracheal opening — so it goes down the esophagus instead of the windpipe.
- Catch the bird carefully — avoid excessive stress
- Tuck the body under your arm, securing the wings
- Gently press on both sides of the jaw to open the beak
- Place the tablet at the back of the tongue, past the tracheal opening
- Close the beak and stroke the throat downward to help with swallowing
- Offer a small amount of water afterward
Warning: Avoid dropping the tablet into the tracheal opening (the hole at the base of the tongue). If the medication enters the trachea, the bird can choke.
What’s the Deworming Schedule by Age, Season, and Purpose?
Maintenance deworming runs every 2 months for stags, cocks, and breeders, tightening to monthly during rainy season and extending out to before a fight or before breeding.
By Age
| Age | Dosage | Schedule |
|---|---|---|
| 8 weeks old | ½ tablet per bird | First deworming — before letting them out on range |
| Stags / Pullets (3–8 months) | ½–1 tablet per bird | Every 2 months |
| Adults (cocks, hens, breeders) | 1 tablet per bird | Every 2 months (maintenance) |
| Heavy infestation | 1 tablet per bird | Every month until cleared |
By Season
| Season | Frequency | Why |
|---|---|---|
| Rainy season (June–November) | Every month or every 3 weeks | Wet soil = faster spread of worm eggs. More intermediate hosts (snails, beetles). |
| Dry season (December–May) | Every 2–3 months | Drier conditions, lower risk. Standard maintenance only. |
This lines up with the wider breeding season and molt calendar — deworm before molt starts in June, not mid-molt.
Pre-Conditioning / Pre-Breeding
| Situation | Schedule |
|---|---|
| Before conditioning (for fights) | 1 tablet, 30 days before the fight. For heavy infestation, add another tablet 15 days before. |
| Before breeding | Deworm at least 1 month before pairing |
This is the lead-in window for a 21-day conditioning program — a wormy bird won’t hold condition no matter the feed.
What Does a Bi-Monthly Deworming Calendar Look Like?
Run the full 8-day protocol — deworm, flush, recovery — every 2 months, on a rolling basis:
| Month | Action |
|---|---|
| Month 1 | First deworming + bacterial flush + recovery |
| Month 3 | Second deworming + bacterial flush + recovery |
| Month 5 | Third deworming + bacterial flush + recovery |
| Month 7+ | Continue every 2 months indefinitely |
Pro tip: Log your deworming schedule in the FarmHub Health Hub so you get a reminder for the next deworming.
What Dewormers Are Available in the Philippines?
Six products cover most farms: Wormal, Vermigo, Strongard, Astig, Vermex 4, and V-REX, all sold as tablets, caplets, or a water-soluble powder, and all effective against roundworms with most also covering tapeworms.
| Product | Manufacturer | Active Ingredients | Roundworms | Tapeworms | Form |
|---|---|---|---|---|---|
| Wormal | Battlecock | Phenothiazine, Dibutyltin Dilaurate, Piperazine | Yes | Yes | Tablet |
| Vermigo | UNAHCO/Powervet | Levamisole, Niclosamide | Yes | Yes | Caplet |
| Strongard | UNAHCO/Powervet | Praziquantel, Albendazole | Limited | Yes | Tablet |
| Astig | Excellence Intl. | Levamisole HCl, Praziquantel | Yes | Yes | Tablet |
| Vermex 4 | Lakpue (LDI) | Niclosamide, Levamisole, Albendazole, Praziquantel | Yes | Yes | Tablet |
| V-REX | UNAHCO/Powervet | Levamisole HCl 2% | Yes | Yes | Water-soluble powder |
For chicks and large flocks: V-REX (water-soluble) is more convenient — just add it to the water instead of catching each bird individually.
Tip: Don’t use the same dewormer every time. Rotate products every 2–3 cycles to prevent the worms from developing resistance.
What to Expect After Deworming
| Timeframe | What Happens |
|---|---|
| First hour | Live roundworms may appear in the droppings (this is normal — the medication paralyzes the worms) |
| 24–48 hours | Droppings will be looser than normal. Tapeworm segments may appear. The bird may be slightly sluggish or weak. |
| 3–7 days | Energy gradually returns. Appetite improves. Droppings normalize. |
| 2 weeks | For heavy infestations, you’ll notice the bird gaining weight and the comb regaining color |
Did you see worms in the droppings? That means the dewormer is working — it’s a good sign, not a bad one.
What Are the Most Important Deworming Reminders?
Get the sequencing and daily prep right and the protocol works regardless of which brand you use.
- Don’t give Premoxil and Vitmin Pro on the same day. Premoxil first (Days 2–4), rest (Day 5), then Vitmin Pro (Days 6–8).
- Morning is always the best time for medicated water — birds are thirsty after waking up and will drink more.
- Prepare fresh medicated water every day. Never reuse yesterday’s mix.
- Remove all other water sources while giving medicated water to ensure the birds drink it.
- Repeat the full protocol every 2 months — one Wormal tablet every 2 months for stags, cocks, and brood stock as regular maintenance.
- Don’t use the same dewormer every time — rotate products to prevent worms from developing resistance.
- Clean the coop after deworming — expelled worms and eggs in the droppings can be reingested.
What Are the Most Common Deworming Mistakes?
Six recurring habits explain most failed deworming cycles.
- Skipping the bacterial flush — dying worms release bacteria; Premoxil cleans that up
- Reusing the same dewormer — see the rotation tip above
- Not cleaning the coop afterward — expelled worms and eggs in the droppings can be reingested
- Running Premoxil and Vitmin Pro together — see the sequencing reminder above
- Not monitoring droppings — check whether worms were expelled to confirm the treatment worked
- Deworming a sick bird — confirm the bird is healthy first; a stressed bird recovers harder
Disclaimer: This guide is for reference purposes and is based on manufacturer product labels and published poultry health sources. Consult a veterinarian for specific health concerns regarding your flock. Observe the proper withdrawal period before consuming meat or eggs from treated birds.
Frequently Asked Questions
How long does the full deworming protocol take?
8 days: Wormal on Day 1, a Premoxil bacterial flush on Days 2-4, a plain-water rest day on Day 5, then Vitmin Pro recovery on Days 6-8. From Day 9 you're back to the normal maintenance schedule.
How often should you deworm gamefowl?
Every 2 months as standard maintenance for stags, cocks, and breeders. Deworm every month during rainy season (June-November) when worm risk is higher, and at least 1 month before pairing for breeding.
What dosage of Wormal do you give?
½ tablet for birds at 8 weeks old and for stags/pullets 3-8 months, and 1 full tablet for adults. For heavy infestations, repeat every month until cleared.
Why is a bacterial flush needed after deworming?
Worms release bacteria into the gut as they die off. A 3-day Premoxil flush (5g per gallon) cleans that up so the bird can absorb nutrients properly again.
Can you use the same dewormer every time?
No. Rotate products every 2-3 cycles — Wormal, Vermigo, Strongard, Astig, Vermex 4, or V-REX — so the worms don't build resistance to any single active ingredient.
What are the signs your bird has worms?
Weight loss despite normal eating, a pale comb and wattles, ruffled dull feathers, loose droppings, visible worms in the droppings, lethargy, and — in hens — a drop in egg production.
What should you expect after deworming a bird?
Live worms may appear in the droppings within the first hour, droppings loosen over 24-48 hours, energy and appetite return over 3-7 days, and for heavy infestations you'll see weight and comb color improve within 2 weeks.
Can you give Premoxil and Vitmin Pro on the same day?
No. Give Premoxil first (Days 2-4), let the bird rest on plain water for a day, then start Vitmin Pro (Days 6-8). Running them together works against each other.