Human 3 mg tablets are counted from kilograms, not paste

Stromectol 3 mg is weighed in kilograms

Labeled antiparasitic math is 200 mcg/kg on a human 3 mg tablet, not a paste concentration on a kitchen scale. Smaller 4- and 6-tablet fills often land $15-25 in coupon tools. This bench lists those bands. It does not broker paste.

Why scabies needs a day-14 repeat

Eggs hatch after the first dose. Day 14 is on the regimen, not optional. Screen strongyloides before steroids. MDR1/P-gp failure raises CNS exposure - farm paste skips that homework and shows up in poison-control logs.

Human 3 mg tablet bands at four counters

Walgreens, Kroger, Publix, Harris Teeter - August 2026 snapshots for human 3 mg tablets. 4- and 6-count rows, not a 10-count paste analog. ZIP moves the dollar. Script required.

Human Tablets Counted From Kilograms, Not Paste

The ivermectin harm I remember: transplant workup starts prednisolone, nobody asks about barefoot rice farming in Laos. LTC scabies outbreak — one resident treated, staff itching three weeks later. Facebook dose of 1.87% paste for a 90 kg man — CNS toxicity.

Soil helminths, scabies, filarial disease — tropical burden plus U.S. travel, immigration, LTC outbreaks, crusted scabies in immunocompromised hosts.

Stromectol FDA November 1996: strongyloidiasis and onchocerciasis. Topical ivermectin cream for rosacea — different product, different exposure.

Label check: mectizan mass drug administration cut onchocerciasis blindness — public health context distinct from individual mg/kg prescribing.

COVID antiviral controversy does not change antiparasitic pharmacology here — mechanism, weight-based dosing, MDR1 safety in competent hosts stay the clinical core.

Crusted (Norwegian) scabies: higher-dose regimens, environmental control, ID consult — standard two-dose protocol may fail.

Label check: before corticosteroids or chemotherapy in at-risk patients: strongyloides screen or treat. Hyperinfection mortality is preventable.

Day 14 repeat for scabies is not optional — patients who itch at day 7 want a third dose; explain egg hatch instead.

Invertebrate GluCl Channels and a Working P-gp Barrier

Ivermectin binds glutamate-gated chloride channels (GluCl) present in invertebrate nerve and muscle, increasing chloride influx, hyperpolarizing cells, and causing flaccid paralysis of parasites.

Mammalian GABA-A receptors are not targets at therapeutic concentrations — low affinity and P-glycoprotein efflux at blood-brain barrier limit CNS drug accumulation in normal hosts.

MDR1 (ABCB1) mutation in dogs (collie sensitivity) parallels human concern when P-gp function is compromised — human MDR1 defect rare but clinically catastrophic with ivermectin.

Microfilaricidal activity in onchocerciasis kills Wolbachia-dependent larvae, provoking Mazzotti inflammatory reactions as dying microfilariae release antigens.

Scabies mites (Sarcoptes scabiei) are susceptible; oral ivermectin used per CDC guidance for scabies including institutional outbreaks though tablet indication is not primary FDA scabies label.

Macrofilaricidal effect against adult Onchocerca requires repeated courses or doxycycline adjunct strategies in research protocols.

P-gp failure — MDR1 defect, overdose, P-gp inhibitors — is when mammalian CNS toxicity appears; collie dog analogy helps patients understand horse paste risk.

Microfilaricidal kill provokes inflammation — Mazzotti in onchocerciasis is not 'allergic to ivermectin' in scabies context.

200 mcg/kg Math on a 3 mg Human Tablet

Oral ivermectin on empty stomach increases bioavailability — take with water before food when feasible per labeling practice.

Highly lipophilic; extensively protein bound. Half-life approximately 18 hours with prolonged terminal phase reflecting tissue distribution.

Hepatic metabolism via CYP3A4; excreted predominantly in feces with minimal urine elimination.

P-glycoprotein at blood-brain barrier is primary guard against CNS toxicity — inhibitors of P-gp (ketoconazole, cyclosporine, quinidine) theoretically increase CNS exposure.

Weight-based dosing mandatory — 200 mcg/kg (0.2 mg/kg) standard for many indications; calculate from actual body weight with cap rules for obesity per institutional protocol.

Pediatric weight tables prevent arithmetic errors — double-check kg and mcg/kg multiplication.

Strongyloides, Oncho, and the Day-14 Scabies Repeat

Strongyloidiasis: single oral dose 200 mcg/kg cures many uncomplicated infections; immunocompromised hosts need prolonged or repeated therapy with specialist oversight and stool follow-up.

Scabies: two-dose oral ivermectin 200 mcg/kg one week apart (day 1 and day 14) non-inferior to topical permethrin in many trials for classic scabies — simultaneous treatment of close contacts and bedding hygiene essential.

Day 14 repeat targets eggs not killed by first dose — skipping second dose drives treatment failure in households.

Label check: onchocerciasis: single dose reduces microfilarial load; pretreatment assessment for loiasis co-infection in Africa — Loa loa encephalopathy risk with rapid microfilarial kill.

Head lice: oral ivermectin alternatives exist where topical resistance prevalent — verify local guidance.

Label check: unapproved antiviral use lacks controlled trial support at antiparasitic exposures — do not extrapolate this monograph to off-label COVID claims.

Institutional scabies non-inferiority to permethrin in many trials — oral helps when topical adherence impossible; contacts still simultaneous.

Strongyloides single dose cures many immunocompetent hosts — immunosuppressed need prolonged therapy and stool surveillance; one-and-done mindset kills.

Head lice oral use when topical resistance — verify local guidance; still weight-based human tablets.

Weight-Based Dosing and Administration

Calculate: patient weight (kg) × 200 mcg/kg = total mcg; divide by tablet strength (common 3 mg and 6 mg Stromectol tablets) to determine pill count.

Example: 70 kg × 200 mcg/kg = 14,000 mcg = 14 mg → two 6 mg tablets + one 3 mg tablet (verify arithmetic independently).

Scabies: dose day 1 and repeat day 14; treat contacts simultaneously; launder bedding and clothing.

Label check: pediatric: weight-based; not for children under 15 kg in some scabies protocols — use permethrin when below weight threshold per CDC.

Take on empty stomach with water; food reduces absorption.

Do not use veterinary paste, pour-on, or injectable livestock formulations — concentration per gram differs from human mg/kg tablet dosing and poison centers report serious toxicity from paste miscalculations.

Obesity weight-based — use actual body weight unless institutional cap protocol for pill burden.

Repeat strongyloides 200 mcg/kg at two weeks immunocompetent if stool still positive.

Crusted scabies weekly until clinical resolution — ID defines duration.

Pharmacy consult when tablet combinations awkward — rounding up slightly within mg/kg acceptable.

Document weight in kg on Rx — lb-only scripts cause pharmacy delays.

Caregiver pill-split teaching in room — 3 mg plus 6 mg combinations for 18 mg example.

Day 14 return visit scheduled at dose one — not optional follow-up.

Strongyloides stool two and four weeks — clearance before steroid clearance in same chart.

P-gp Failure and the CNS Exposure Trap

P-gp inhibitors (ketoconazole, cyclosporine, quinidine) may increase ivermectin levels — caution in co-administration.

CYP3A4 inducers may reduce efficacy — clinical significance usually minor for single-dose antiparasitic use.

Wararin: rare interaction reports — monitor if concurrent.

MDR1 defect or blood-brain barrier compromise: ivermectin neurotoxicity — contraindicated or specialist-only in known defect.

Immunosuppression without treating strongyloides first: hyperinfection syndrome — always take travel and residence history before steroids in at-risk patients.

Alcohol and sedatives do not directly interact but confuse clinical picture if encephalopathy occurs — document baseline neuro status.

Mazzotti Reactions and Paste-Dose Toxicity

Label check: common: dizziness, pruritus, mild GI upset — often Mazzotti-like reaction to dying parasites rather than drug idiosyncrasy.

Mazzotti reaction in onchocerciasis: fever, rash, arthralgia, hypotension — pretreat with antihistamine and corticosteroid per endemic disease protocols.

CNS toxicity (coma, ataxia, tremor) in humans with MDR1 mutation or massive overdose — especially veterinary product ingestion.

Elevated LFTs transiently reported — monitor in hepatic comorbidity if repeated doses.

Teratogenicity in animal studies — avoid in pregnancy unless risk-benefit clearly favors treatment for severe infestation.

Pediatric accidental ingestion of veterinary products — emergency evaluation.

Mazzotti reaction mistaken for sepsis — fever after onchocerciasis dose in endemic traveler.

Elevated LFTs transient — repeat if prolonged course in hepatic comorbidity.

Teratogenicity in animal studies — avoid in pregnancy unless benefit clearly favors treatment for severe infestation.

CNS toxicity coma — MDR1 defect, paste overdose, or P-gp inhibitor combo; supportive care.

Pregnancy, Loa loa, and Crusted Scabies

Pregnancy: avoid unless benefit clearly outweighs risk; scabies permethrin topical often preferred in pregnancy.

Lactation: low levels; short courses generally compatible per infectious disease references.

Pediatrics: weight-based; verify minimum weight thresholds for oral therapy.

Immunocompromised strongyloides: prolonged therapy, stool surveillance, ID consultation — single dose often inadequate.

Crusted scabies in HIV: multi-dose ivermectin plus topical permethrin and environmental decontamination.

Loa loa co-endemic regions: screen microfilaremia before onchocerciasis mass treatment to prevent encephalopathy.

Counseling and Safety

Use FDA-approved human tablets from pharmacy — not farm supply store paste.

Explain day-14 second dose for scabies before patient leaves — 'one and done' fails when nits hatch.

Treat household contacts; itch may persist weeks after successful kill — antihistamines for symptom relief, not repeat dose early without indication.

Travel history for strongyloides before immunosuppression — pair with prednisolone counseling in same patients.

Store tablets away from veterinary products in rural households.

Report severe dizziness, confusion, or eye pain after dose — especially if veterinary product exposure suspected.

Pharmacy pill-count consult — show patient the arithmetic on paper.

Contacts treat even if asymptomatic — scabies incubation counseling.

Laundry hot dry cycle — bedding and worn clothing day 1.

Permethrin cream technique if dual modality — ears, nails, soles.

Strongyloides travel list — Southeast Asia, Latin America, Africa, rural U.S. Gulf states history.

Do not repeat dose early for itch alone — timeline chart handout.

Store Stromectol away from barn supplies — separate shelf labeled human.

Set phone alarm for day 14 before leaving clinic — scabies eggs do not care about your memory.

Permethrin cream technique handout if pregnancy or under 15 kg — ears and nails included.

Scabies Outbreaks and Strongyloides Safety

LTC scabies outbreak: treat all residents and staff simultaneously — single-case treatment fails.

Crusted scabies: repeated weekly ivermectin plus topical permethrin — ID consultation.

Day 14 repeat non-negotiable for classic scabies — calendar reminder at dose one.

90 kg at 200 mcg/kg equals 18 mg — combine 3 mg and 6 mg tablets; verify arithmetic twice.

Under 15 kg: permethrin cream preferred over oral per CDC.

Strongyloides hyperinfection with steroids — ivermectin daily until stool clear under ID in immunocompromised.

Veterinary 1.87% paste grams are not 3 mg tablets — poison center cases from paste division.

Onchocerciasis Mazzotti pretreatment in endemic programs — not scabies context.

Itch persists weeks after successful kill — antihistamines not early repeat dose.

Store human tablets away from veterinary products in rural households.

School scabies letter — day 14 date bold; superintendent calls if whole grade untreated.

Strongyloides serology false negative early — repeat before steroids if clinical suspicion.

Stool agar culture sensitivity beats single O&P — immunocompromised clearance documentation.

Permethrin 5% first line many guidelines — oral ivermectin when topical failure or outbreak logistics.

Post-scabietic dermatitis — emollients weeks; distinguish burrows before retreat.

Weight-based obesity — round to feasible tablet split; pharmacist consult for pill burden.

Onchocerciasis skin snip — travel clinic follow-up; Mazzotti pretreatment endemic only.

Head lice two doses one week apart when oral used — same egg hatch logic as scabies.

Cutaneous larva migrans — topical first; oral ivermectin not default beach rash.

Filariasis MDA programs — community context; individual scabies dose not interchangeable.

Teratogenicity animal data — permethrin pregnancy scabies first trimester counseling documented.

MDR1 human homozygous defect rare — ivermectin contraindicated; ask unusual prior neuro reactions.

Ketoconazole shampoo plus oral ivermectin — systemic azole interaction usually minor for single dose but note.

Immigrant screen strongyloides with transplant listing — treat before induction.

Horse Paste That Lands in Poison Control

Scabies day 1 and day 14 calendar card — hand it at dose one. Skipping day 14 is the common failure mode.

90 kg × 200 mcg/kg = 18 mg — combine 6 mg and 3 mg tablets; pharmacy verifies math.

Horse paste from feed store — refuse; poison center overdoses from gram-per-pound guessing.

Crusted scabies in HIV — ID consult, weekly doses plus topical, not single standard course.

Prednisolone planned, veteran from Vietnam — strongyloides serology or empiric ivermectin before steroids.

Itch week 2 post-treatment — normal post-scabietic itch; antihistamines, not early repeat without reinfection signs.

LTC outbreak — all residents and staff same day; treating index case alone fails.

Under 15 kg — permethrin cream per CDC, not oral.

Pregnancy scabies — permethrin topical preferred over oral.

Onchocerciasis with Loa loa co-endemic risk — microfilaremia screen before mass treatment.

Immunocompromised strongyloides — daily ivermectin under ID until stool clear, not single dose.

Fake Stromectol online — legitimate pharmacy only.

Rosacea Soolantra cream ≠ oral Stromectol — patients confuse products constantly.

Post-scabietic itch clinic — burrow exam before third dose.

Strongyloides serology in transplant order set — hard stop before induction.

Weight 200 kg — pharmacy pill burden consult; split AM/PM same total mg/kg.

What ID Wants Before the First 3 mg Count

Scabies day one and day fourteen calendar card — hand to patient.

Weight eighty kg times zero point two mg kg equals sixteen mg — show pill math.

Horse paste Facebook dose — refuse counsel human tablets pharmacy.

Crusted scabies HIV — ID not single dose.

Strongyloides before prednisone transplant — serology or treat empiric endemic exposure.

Itch two weeks after treat — normal — not repeat day seven.

Permethrin pregnancy scabies over oral ivermectin.

Under fifteen kg child permethrin cream.

LTC outbreak all staff plus residents same day.

Onchocerciasis Mazzotti fever pretreat endemic not scabies dose.

MDR1 collie dog analogy explain P-gp human rare defect.

Empty stomach water — food reduces absorption.

Fake Stromectol online — pharmacy only.

Veterinary pour-on never oral human.

Immunocompromised strongyloides daily ivermectin ID protocol not single dose.

Scabies in daycare — public health letter to parents with day 14 date circled.

Weight 16 kg child — permethrin not oral; show parents CDC threshold card.

Strongyloides stool follow-up 2–4 weeks — single negative O&P insufficient in HTLV or steroid plan.

Onchocerciasis traveler — dermatology referral; Mazzotti pretreatment not scabies counseling.

Soolantra refilled as Stromectol — pharmacy verification on every ivermectin e-script.

Burrows present week 2 — reinfection or treatment failure; exam before third dose.

Permethrin cream application ears and nails — patient education reduces scabies fail.

Household member asymptomatic — treat anyway; incubation carriers.

Strongyloides autoinfection decades later — travel history on every steroid consent.

Crusted scabies environmental spray — bedding alone insufficient; ID protocol.

Microfilaria Loa loa — travel clinic Africa checklist before onchocerciasis donation trip.

Head lice malathion failed then oral — weight math on chart twice.

Rosacea patient asks for oral — redirect to Soolantra; systemic different product.

Vet product in online cart — refuse prescription; human pharmacy tablets only.

Split total daily mg/kg AM/PM if pill count huge — same 24 h dose.

Stromectol storage room temp — stable; paste excipients untested orally in humans.

Serology false negative repeat — immigrants before chemo.

Hyperinfection ICU — steroids held until stool clear on daily ivermectin.

Itch without burrows week 4 — post-scabietic; crotamiton or antihistamines.

Strongyloides ELISA in transplant order set — hard stop before induction.

Scabies prophylaxis contacts LTC — public health one dose policy documented.

Horse paste social media — document refusal in chart; human tablets only.

Pediatric weight 16 kg — permethrin demonstration in clinic.

Crusted scabies negative pressure — infection control plus weekly ivermectin ID.

Stromectol lot number recorded — rare recall traceability.

Travel clinic onchocerciasis — Mazzotti kit in endemic return package.

Rosacea refill Soolantra — e-prescribe NDC check every time.

Immigrant screen positive — ivermectin date before prednisolone start in same chart.

Filariasis MDA not scabies sig — community programs separate counseling.

Cutaneous larva migrans beach trip — topical first line education.

Strongyloides hyperinfection ICU checklist — hold steroids, daily ivermectin, ID.

Scabies permethrin plus oral dual modality — ID defines when both needed.

Ward and ID Clinic Notes

Transplant workup — strongyloides serology in panel before induction immunosuppression; ivermectin first if positive.

LTC scabies index case — outbreak coordinator lists all contacts; day 14 on whiteboard.

Crusted scabies isolation plus environmental services — domperidone wrong drug; ivermectin weekly per ID.

Patient divides horse paste with kitchen knife — poison control case; human tablets only counseling.

Itch clinic week 3 post-scabies — reinfection vs post-scabietic; burrows exam before third dose.

Immigrant health screen — strongyloides ELISA with TB quantiferon; steroids deferred until cleared.

Pediatric oncology starting chemo — travel history to tropics triggers parasite review.

Fake online Stromectol — gray market tablets; legitimate pharmacy or do not treat.

Pregnancy scabies severe — permethrin repeat at day 7 per OB; oral ivermectin last resort documented.

HIV CD4 150 crusted scabies — cumulative mg/kg ivermectin with ID; single dose fails.

Loa loa risk before onchocerciasis donation program volunteer — not typical U.S. clinic but travel clinic must know.

Head lice school outbreak — oral ivermectin when topical resistance documented; weight math twice.

Strongyloides hyperinfection ICU — daily ivermectin until stool negative; steroids held.

Rosacea consult — topical ivermectin cream; oral mg/kg question every visit.

Rural household stores vet and human products same cabinet — separate labeled containers counseling.

Daycare scabies letter — day 14 circled with public health contact.

Immigrant strongyloides positive — treat before rheumatology prednisolone same week.

Head lice two-dose oral — egg hatch logic matches scabies day 14.

Onchocerciasis follow-up travel clinic — skin symptoms after MDA abroad.

Weigh in kg, Then Show the Arithmetic

Weight in kg × 200 mcg/kg = total mcg; divide by tablet strength (3 mg, 6 mg). Pharmacy double-checks.

Scabies: dose day 1 and day 14; treat contacts; launder bedding.

Human Stromectol tablets only — never veterinary paste, pour-on, or livestock injectable.

Empty stomach with water when feasible — food lowers absorption.

Strongyloides before steroids/chemo when endemic exposure history.

Crusted scabies, immunocompromised strongyloides — ID consult, not single-dose protocol.

Stromectol PI mcg/kg, Not a Barn Chart

FDA 1996: strongyloidiasis, onchocerciasis — macrocyclic lactone, GluCl in invertebrates.

P-gp at BBB limits mammalian CNS exposure at antiparasitic doses.

Scabies: CDC 200 mcg/kg PO, repeat ~day 14; contacts simultaneous.

Strongyloides hyperinfection with immunosuppression — screen/treat before steroids.

Animal teratogenicity — permethrin preferred scabies in pregnancy.

COVID antiviral use not supported at antiparasitic exposures — separate issue from this dosing.

Contact Treatment and the Day-14 Calendar

LTC scabies: public health liaison, simultaneous treatment policy for residents and staff.

Strongyloides stool O&P low sensitivity — repeat samples, agar culture; serology before immunosuppression.

Head lice: oral ivermectin when topical resistance — verify local patterns.

Soolantra 1% cream for rosacea — not oral mg/kg; patients ask every week.

Cutaneous larva migrans: topical first line — not oral ivermectin default.

Mass MDA programs (onchocerciasis, filariasis) — public health context ≠ individual scabies sig.

Ketoconazole/cyclosporine P-gp inhibition — theoretical CNS rise; usually minor for single scabies dose.

Autoinfection cycle — steroids decades after tropical exposure can unmask strongyloides.

Post-scabietic itch 2–4 weeks — emollients, antihistamines; not reinfection by default.

Document day 14 on Rx label and after-visit summary — first dose alone fails when nits hatch.

Outbreak and Travel Context

Institutional scabies: index case plus asymptomatic contacts day 1 and day 14 — incubation allows carriers.

Crusted scabies HIV: cumulative weekly oral plus permethrin, environmental decontamination — ID/derm.

Immigrant strongyloides serology: Southeast Asia, Latin America, Africa — repeat if early false negative before transplant.

Onchocerciasis: Mazzotti pretreatment in endemic programs; Loa loa screen in co-endemic Africa.

Pregnancy scabies: permethrin 5% first line especially first trimester.

Pediatric <15 kg: permethrin over oral per CDC.

Pharmacy pill-count consult for obesity — split total daily mg/kg AM/PM if one sitting impractical.

Rural households: store human tablets away from veterinary products — accidental ingestion calls poison center.

Bathroom Scale Pounds Are the Wrong Input

Empty stomach with water — food reduces absorption.

Second scabies dose on day 14 — mark calendar now; one dose leaves eggs behind.

Treat everyone in the house the same day even if they do not itch yet.

Wash sheets and clothes hot dry on day one.

Itching two to four weeks after treatment can be normal — call if burrows return.

Human pharmacy tablets only — never horse paste from feed store.

Weight determines pills — pharmacist verifies count with you at pickup.

Tell every doctor before steroids or chemo if you lived in tropics — worm screening.

Dizziness or confusion after dose — emergency care, especially if wrong product used.

Pregnancy scabies — we may use permethrin cream instead; ask OB before oral.

Children under 15 kg — cream not pills per CDC.

Rosacea cream is different product — do not swallow Soolantra for scabies.

Store human medicine away from barn supplies in garage or barn.

Travel clinic follow-up if onchocerciasis treated abroad — Mazzotti symptoms abroad need ID.

Do not repeat dose early because itch persists — timeline on handout.

Strongyloides stool follow-up appointment booked before steroid start — same week.

LTC outbreak contact prophylaxis — public health defines single dose permethrin vs ivermectin.

Crusted scabies visitor restriction until ID clears — infection control sign on door.

Weight 120 kg — pharmacy splits tablets; total mg/kg still correct.

Onchocerciasis returned traveler — dermatology follow-up for skin snip if symptoms persist.

Head lice classroom letter — treat household; school policy on return.

Soolantra vs Stromectol — teach brand names at pickup to prevent wrong product.

Veterinary product in home — separate locked cabinet counseling for rural families.

Immigrant health screen positive strongyloides — ivermectin before any prednisolone pulse.

Kilograms First, Then Human Tablets Only

Take on an empty stomach with water if you can — food makes absorption worse.

Scabies: second dose on day 14 — put it on your calendar now. One dose does not kill eggs.

Everyone you live with and sleep with gets treated the same day. Wash sheets and clothes hot cycle.

Itching may continue two to four weeks after successful treatment — that alone does not mean failure.

Use pharmacy Stromectol tablets only. Do not use horse paste from the farm store — concentration is different and overdoses happen.

If you lived in or traveled to tropical areas with parasitic worms, tell every doctor before steroids or chemo.

Severe dizziness, confusion, trouble walking after a dose — call immediately, especially if anyone used veterinary product.

Day 14 alarm on phone — set it in clinic before you leave; do not rely on memory.

Horse paste is never the right product — human Stromectol tablets from pharmacy only.

Strongyloides travel history belongs on problem list before any steroid prescription.

Itch without new burrows at week three — post-scabietic; antihistamines not automatic third dose.

Contacts treated same day even without rash — incubation carriers spread scabies in households.

Farm paste stays at the farm — only Stromectol from the pharmacy enters your mouth.

Weight in kilograms on the label — pharmacy checks pill count with you.

Tell oncology or rheumatology before steroids if you took ivermectin for worms this month.

Day 14 dose is part of treatment — missing it is the main reason scabies comes back.