Count Stromectol 3 mg tablets at 150 mcg/kg. That is the oncho chart.

01Three milligrams, then a weight, then a count

Halo captures the 3 mg oncho-style count first, cross-checks the Merck Stromectol insert, then publishes the tablet chart people actually need at the window.

Stromectol is a 3 mg tablet. The U.S. insert does not offer a 6 mg or 12 mg human tablet. Those numbers appear only after you multiply 3 mg by two or four. Halo's lock is the onchocerciasis count: about 150 mcg of ivermectin per kilogram, taken as a single oral dose on an empty stomach with water. Table 2 turns that math into tablet bands from 15 kg upward.

Camille's capture step is the indication, not the internet search. Stromectol tablets are indicated for intestinal strongyloidiasis due to Strongyloides stercoralis and for onchocerciasis due to Onchocerca volvulus. That is the labelled pair. Rosacea cream and head-lice lotion are other ivermectin products with other names. They are not this tablet counted at 150 mcg/kg.

Guessing 'a couple of pills' from a neighbor's leftover strip is how both under-dosing and extra tablets happen. Weigh in kilograms. Pick the band. Swallow the count with water, fasting. Write the kilograms on the prescription annotation so a pounds-to-kg slip does not change the count at 2 a.m.

Questions about this brief go to [email protected]. Halo does not fill Stromectol. A licensed prescriber who knows the parasite and the travel map still has to write the order.

02Two worms on the insert, two mcg/kg numbers

Onchocerciasis is the lock on this page: a single oral dose meant to deliver about 150 mcg/kg. In mass programs the usual interval is twelve months. For an individual patient the insert allows retreatment as soon as three months. Ivermectin hits tissue microfilariae of Onchocerca volvulus. It does not kill the adult worm. That is why programs repeat.

Intestinal strongyloidiasis is the other labelled tablet indication. That dose is about 200 mcg/kg once, with a different tablet chart (Table 1). Follow-up stool exams check clearance. Halo does not lock this brief on that 200 mcg/kg number, and it does not lock on scabies protocols that borrow 200 mcg/kg in other countries. If the chart in front of you is strongyloides, use Table 1, not this page's 150 lock.

Activity against Strongyloides is limited to intestinal stages. Immunocompromised hosts, including some people with HIV, may need repeat courses. The insert says well-controlled studies have not fixed an optimal regimen there. Two-week repeats or even monthly suppressive doses appear as practical options, not as a second Halo lock.

Sklice lotion and Soolantra cream share a molecule and confuse searches. They do not share this 3 mg count. Keep the tablet conversation on the two worms the Stromectol PI names.

03Glutamate-gated chloride, then paralysis of the parasite

What the 3 mg tablet is built to hit

• Onchocerca volvulus - microfilariae, not adult worms
• Strongyloides stercoralis - intestinal stages on the tablet label
• Other topical ivermectin products - different labels, not this count

Avermectins bind glutamate-gated chloride channels in invertebrate nerve and muscle. Chloride rushes in, the cell hyperpolarizes, and the parasite is paralyzed. The class can also touch some GABA-gated chloride channels. Mammals lack those glutamate-gated channels in the same way, and ivermectin has low affinity for mammalian ligand-gated chloride channels. It also does not cross the human blood-brain barrier readily at labelled doses. That margin is why a 3 mg human tablet is not a horse paste.

Ivermectin is a mixture: at least 90% 22,23-dihydroavermectin B1a and less than 10% B1b. Molecular weights sit near 875 and 861. The powder is almost insoluble in water, which is a formulation fact, not a reason to chase fatty food against the label.

Nobel-era work by Satoshi Omura and William Campbell sits behind the Mectizan programs that changed river-blindness maps. Credit that parasite history. It is why a 150 mcg/kg count exists as public-health infrastructure, not as a lifestyle tablet.

04Clearance is a stool exam, not a good afternoon

Uncomplicated intestinal strongyloidiasis often needs only one labelled 200 mcg/kg dose, then proof on stool. Feeling better after a cruise is not eradication. Persistent larvae mean another plan: repeat dosing, a look at weight used, or ongoing exposure.

Onchocerciasis follow-up is a program problem as much as a clinic problem. Skin microfilariae in the placebo-controlled adult study fell 83.2% at three days and 99.5% at three months after 150 mcg/kg, and a greater than 90% reduction held through twelve months. Adults worms remain. That is why the twelve-month interval exists.

Document the kilograms, the tablet count, and the empty-stomach instruction on the same line. 'Took with breakfast' is the usual reason a careful count still looks like failure on a later stool.

05The weight table this brief actually prints

Table 2 is the onchocerciasis count. Fifteen to 25 kg: one 3 mg tablet. Twenty-six to 44 kg: two tablets. Forty-five to 64 kg: three. Sixty-five to 84 kg: four. At 85 kg and above, calculate 150 mcg/kg instead of grabbing a fifth tablet from habit. A 70 kg adult on this lock is four tablets, 12 mg of drug, still built from 3 mg units.

Below 15 kg the Stromectol tablet chart does not start. Do not split adult tablets for a toddler because the arithmetic looked tidy. Pediatric product guidance belongs to the prescriber who has a labelled option.

Mass campaigns sometimes convert height to a tablet count when scales are scarce. That public-health shortcut is not this Montreal brief's lock. We keep kilograms on the page so a travel clinic can show its work. The weight-dosing note repeats the same 150 mcg/kg bands without the rest of the PI.

Empty stomach with water is on both dosing sections of the insert. High-fat food raised bioavailability about 2.5-fold in a pharmacokinetic study using 30 mg doses. The labelled direction is still fasting. Do not 'boost' a parasite dose with a greasy breakfast unless a protocol in hand says otherwise.

06Ten tablets is the cash board. Your count may be four.

US ivermectin tablets are 3 mg only. This page counts them at 150 mcg/kg, August 2026. GoodRx lists 3 mg x 10 at $36.45 / $23.76. Halo does not invent a 6 mg tablet. Labelled parasites only.

GoodRx's published human tablet line we can print is ivermectin 3 mg by 10, at $36.45 average retail and $23.76 with a coupon. Halo does not invent a price for four tablets, six tablets, or a fantasy 6 mg strength. If the oncho count is four 3 mg tablets, ask the window to price that count. The ten-count board is the nearest sourced print.

Stromectol 3 mg tablets are white, round, flat, bevel-edged, coded MSD on one side and 32 on the other in the Merck presentation. Generics share the 3 mg strength. A cruise-ship leftover from a prior trip is not a household bottle. Weight and indication still have to match.

This site does not ship tablets. Write [email protected] about the brief. Fill happens at a pharmacy that can legally dispense the prescription in hand.

07What to say at the window

Name the parasite on the prescription. Name the kilograms. Name the 3 mg count. 'Ivermectin, a few tablets' is how Table 1 and Table 2 get swapped.

Empty stomach, water only. Keep the leftover conversation away from family members with vague abdominal pain. Weight-based math still applies to every swallow.

If West or Central Africa is in the travel history, say Loa loa out loud before the first 150 mcg/kg count. If high-dose steroids are coming and the map is endemic for Strongyloides, that is the other labelled lane - 200 mcg/kg and stool follow-up - not this page's lock.

Reviewer: Camille Rousseau. A different empty-stomach problem lives on the levothyroxine brief.

08The other labelled chart, so you do not mix it in

Strongyloidiasis trials that support the tablet used about 170 to 200 mcg/kg. Cure meant no larvae on at least two stool exams three to four weeks later. Versus albendazole 200 mg twice daily for three days, ivermectin cure rates were 92% (24/26) and 83% (126/152) against 55% and 45%. A single 200 mcg/kg day matched thiabendazole 25 mg/kg twice daily for three days and was easier to tolerate in the small comparative set.

Table 1 for that indication is a different band list: 15-24 kg one tablet, then 25-35, 36-50, 51-65, 66-79, and 200 mcg/kg at 80 kg and above. Do not drop a 70 kg strongyloides patient onto this page's four-tablet oncho band and call it done. Use the chart that matches the worm.

Adverse reactions in 109 strongyloides-trial patients at 170-200 mcg/kg included dizziness and pruritus at 2.8% each, diarrhea and nausea at 1.8% each, and a scatter of fatigue, abdominal pain, and rash under 1%. Mazzotti-type eye and skin storms belong to the oncho chapters, not to uncomplicated intestinal strongyloides.

The parasites-only note keeps both worms on one short card. This brief still locks the title and the cash ask on the 150 mcg/kg count.

09Dying microfilariae, Mazzotti signals, Loa loa maps

Onchocerciasis treatment can look like an allergy because microfilariae are dying. Historical microfilaricides such as DEC taught clinics the Mazzotti pattern: skin, nodes, fever, postural hypotension. Stromectol can do the same in addition to ordinary drug effects. In trials of 963 adults, pruritus worsened in 27.5%, skin involvement in 22.7%, fever in 22.6%, and inguinal node tenderness in 13.9% during the first four days.

Mild cases have been handled with antihistamines or aspirin. Postural hypotension has been treated with oral fluids, lying flat, saline, or parenteral corticosteroids. Those are labelled support notes, not a home protocol. Eye symptoms after treatment need an oncho-aware clinician. Anterior-chamber microfilariae can rise at day 3 before later counts fall.

People with onchocerciasis who also carry a heavy Loa loa load can develop encephalopathy after a microfilaricide, rarely including after ivermectin. Pain, red eye, incontinence, inability to stand, seizures, or coma sit on that warning list. If West or Central Africa exposure is real, assess for loiasis before you treat and watch afterward. Camille will not count 150 mcg/kg from a leftover strip in that setting.

Neurotoxicity - somnolence through coma, confusion, death - has been reported with ivermectin even without onchocerciasis or Loa loa, at recommended doses and in overdose. Supportive care and stopping the drug are the documented path. Veterinary paste is how many of those overdoses start. It is not a 3 mg count.

10Peak near four hours, half-life near eighteen

After single 12 mg fasting doses in healthy volunteers (a mean of about 165 mcg/kg), mean peak concentrations of the major component H2B1a were 46.6 ng/mL in one study and 30.6 ng/mL in another, around four hours. Ranges were wide. Plasma levels scale roughly with dose.

Hepatic metabolism dominates. In vitro work points to CYP3A4 as the main isoform, with smaller CYP2D6 and CYP2E1 roles depending on the method. Clinically relevant concentrations did not strongly inhibit CYP3A4, 2D6, 2C9, 1A2, or 2E1 in those microsome experiments. Drug still leaves almost entirely in feces over about twelve days. Less than 1% of the dose appears in urine. Plasma half-life is about 18 hours.

Strong CYP3A4 or P-glycoprotein inhibitors can still raise exposure in a person who already takes azoles, certain macrolides, or ritonavir. Check a current interaction file before a travel clinic repeats a leftover strip next to a new HIV regimen.

11Immunocompromised hosts are not a single 3 mg story

The insert is honest about the evidence gap. Adequate well-controlled studies have not set the best regimen for intestinal strongyloidiasis in immunocompromised people, including some with HIV. Several treatments at two-week intervals may be required. Cure may not be achievable. Extra-intestinal disease is harder. Monthly suppression is mentioned as a possible help.

HTLV-1, malnutrition, and low CD4 counts change outcomes. Community leftover math does not. ID consultation beats a neighbor's strip. Pediatric patients 6 to 13 years showed a similar oncho safety profile in an open study; that is not a license to split tablets under 15 kg.

Older adults were not numerous enough in trials to prove a different response. Treat age as a polypharmacy and P-gp context, not as a reason to skip a documented parasite.

Pregnancy and lactation decisions stay on labelled parasite indications when benefit outweighs risk. Mass programs often defer early pregnancy. That is not a Halo dosing table. It is a prescriber conversation.

12Count 3 mg. Stay on labelled worms.

Halo's ivermectin brief is a 3 mg tablet counted at 150 mcg/kg on the onchocerciasis chart. Two tablets are 6 mg of drug, not a new strength. Strongyloides remains on the insert at 200 mcg/kg with its own table. Scabies-style 200 mcg/kg locks belong on other sites. This one does not print them.

Weigh the person. Fast. Swallow the count with water. Watch for Mazzotti signals after oncho treatment and for Loa loa risk on the right map. Ask the window to price the actual tablet number. The only sourced cash board here is 3 mg by 10 at $36.45 / $23.76. Halo does not dispense.