Count Stromectol 3 mg tablets from kilograms at 150 mcg/kg

01How a pharmacy counts 3 mg tablets at 150 mcg/kg

Stromectol ships as a 3 mg white tablet coded MSD on one side and 32 on the other. Pharmacies count those tablets from a kilogram. They do not count from a forum screenshot that says "take five for viruses."

This site's locked row is onchocerciasis: about 150 mcg/kg as a single oral dose. The label table converts that into 3 mg tablet counts by weight band. At or above 85 kg the instruction is simply 150 mcg/kg, not a fifth cartoon pill.

A cheap online order that asks for height or shirt size instead of a clinic weight is not using Table 2. Halo Medix does not sell Stromectol and will not invent a cash price for a 20-count pack. The educational work is the count.

Organism first: labeled parasites. Then kg. Then 3 mg tablets. The brief is ivermectin.

02HIV-associated strongyloidiasis often needs more than one count

HIV-associated strongyloidiasis often needs more than one 200 mcg/kg count. The label allows repeated courses at about 2-week intervals and says cure may not be achievable. Monthly suppression is sometimes used. Those repeats are ID-designed. They are not a home calendar of 150 mcg/kg oncho pulses copied from Table 2.

Hyperinfection and disseminated disease sit outside the "intestinal, nondisseminated" indication sentence. Do not treat a steroid-treated patient with gram-negative sepsis and larva currens as a one-tablet travel story.

If the ID team later writes monthly suppression, they still pick a mcg/kg and a kg. They do not write "a few 3 mg tablets when you remember." Document each count the way Table 1 or Table 2 would: weight, row, tablet number, empty stomach. A missed monthly dose is a call, not a double next month.

Unit-dose cartons of twenty 3 mg tablets exist. Leftovers after a calculated 150 mcg/kg pulse are not a household antiviral stash. Return or lock them. The label's veterinary-overdose paragraph is a list of people who treated leftovers as candy.

03The 200 mcg/kg Strongyloides table is a different count

Strongyloides still needs a real kilogram even though the mcg/kg row changes. The labeled row is about 200 mcg/kg once. Table 1 bands differ: 15-24 kg one tablet, 25-35 kg two, 36-50 kg three, 51-65 kg four, 66-79 kg five, and at 80 kg or more calculate 200 mcg/kg.

Notice the edges. A 24 kg child is one tablet on both tables. A 26 kg child is two tablets on oncho and two on Strongyloides. A 70 kg adult is four tablets at 150 mcg/kg and five tablets at 200 mcg/kg. That one-tablet gap is why internet charts that flatten "ivermectin 3 mg by weight" are unsafe.

Follow-up stools at 3-4 weeks, then a three-month series, belong on the Strongyloides chart. They do not belong as a reason to redose 150 mcg/kg oncho-style at day three because someone felt unwell.

04Safety data stop under 15 kg

Safety data stop under 15 kg. The onchocerciasis table begins at 15-25 kg (one 3 mg tablet). Pediatric study patients ages 6 to 13 weighed 17-41 kg. A parent asking for "half a 3 mg tablet for a 12 kg toddler" is asking for a use the label has not established.

Store tablets below 30°C (86°F). A glove-box strip in July is a storage problem layered on a dosing problem. Unit-dose packs of 20 exist; they are not a license to leave leftovers in a backpack for the next unexplained fever.

Elderly patients were not numerous enough in trials to prove a different response. Treat them as you would any older adult: more comorbidities, more drugs, same kg math if the indication is real.

05Onchocerciasis tablet counts follow the 150 mcg/kg bands

Onchocerciasis tablet counts follow Table 2. 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.

That is a single oral dose. Mass campaigns often repeat at 12 months. An individual may be retreated as soon as 3 months. Repeating because Saturday itch felt like "failure" is Mazzotti confusion, not a second Table 2.

Worked example without inventing a patient: 60 kg times 150 mcg/kg is 9000 mcg, which is 9 mg, which is three 3 mg tablets - the 45-64 kg band. A 90 kg adult is above 85 kg, so the prescriber calculates 150 mcg/kg instead of grabbing "four tablets" from the band below.

Do not convert pounds in your head at the kitchen table if the chart is in kilograms. Weigh in clinic clothes, write kg, then count.

06Internet dose charts mix 150 and 200 and call it cheap

Internet dose charts mix 150 and 200 and call the result a cheap 3 mg order. Some charts were built for livestock. Some were built for a virus the tablet label does not mention. A licensed pharmacy still needs a prescription that names kg and indication.

If the only number on the page is "3 mg" without mcg/kg, it is packaging, not a dose. If the only number is "150 mcg/kg" without an organism, it is a lock in search results, not a diagnosis. Put both on the order, or do not count tablets.

Compare real pharmacies yourself. We will not invent a dollar figure for twenty 3 mg tablets. We will repeat the empty-stomach line until it sticks.

If a traveler already swallowed a guessed count, write the kg they used, the kg you measure now, the tablet number, and the time. That scrap is what emergency and ID teams need. A second 150 mcg/kg pulse the next morning to "fix the guess" is a second dose inside the 18-hour half-life, not a correction.

07Kilograms on a clinic scale beat a home guess

Kilograms on a clinic scale beat a home guess. People understate weight. People use last year's driver's license. A 4 kg error at 150 mcg/kg is 600 mcg, which is a fifth of a 3 mg tablet - enough to nudge a borderline band the wrong way if you were already near 25, 45, or 85 kg.

Shoes off, jacket off, kg written on the order. If only pounds exist, convert once with a calculator and write both. Do not do the arithmetic in a comment thread while someone is already holding the blister.

Edema, ascites, or a plaster cast can fake a heavier dosing weight. Those are clinician calls. They are not "round up for luck."

Plasma levels after oral ivermectin run roughly proportional to dose. That helps a 150 mcg/kg calculation stay linear. It does not bless a doubled "loading" count because someone is anxious. The 12 mg fasting PK work already sits near 165 mcg/kg, close to the oncho lock, with peaks around four hours. Stacking a second 3 mg handful at hour two is a second dose, not a smoother onset.

08A high-fat meal raised bioavailability about 2.5-fold

A high-fat meal raised bioavailability of a 30 mg ivermectin dose about 2.5-fold versus fasting in the labeled pharmacokinetic study. That is why both dosing tables say empty stomach with water. A "take it with dinner so it is gentler" hack is a larger exposure, not a kinder one.

After single 12 mg fasting doses in healthy volunteers (mean about 165 mcg/kg), mean peak H2B1a levels were 46.6 ng/mL in one study and 30.6 ng/mL in another, at about 4 hours. Plasma half-life is about 18 hours. Almost all of the drug and metabolites leave in feces over an estimated 12 days. Urine carries less than 1%.

CYP3A4 does the main metabolism. The in-vitro work did not show strong inhibition of common CYPs at clinical concentrations. The interaction that did show up after marketing is a rare INR rise with warfarin. Count tablets and mention warfarin in the same visit.

09Write the kg and the mcg/kg on the same line

Write the kg and the mcg/kg on the same line as the 3 mg count. 150 is onchocerciasis. 200 is intestinal Strongyloides. Under 15 kg is not a table.

Empty stomach, water, no high-fat "buffer." Plan stools or oncho retreatment with the clinician who weighed the patient. See which parasites are labeled and the brief.

A guessed weight is how both undertreatment and excess start. Use a scale. Write the date on the same line so next month's retreatment does not reuse last year's kilograms.