antibiotic

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Erythromycin

antibiotic← class / antibiotic

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checked 2026-08-05

what it isThe original macrolide, mostly overtaken as an antibiotic and kept alive as a low dose motilin agonist for gastroparesis; strong CYP3A4 inhibition plus QT prolongation is the hazard that matters

what it doesIt binds the 50S ribosomal subunit and blocks bacterial protein synthesiswhat you would noticeCovers atypical respiratory pathogensMotilin agonist that speeds gastric emptyingLow dose prokinetic use in gastroparesis

is it safean antibiotic that strongly inhibits CYP3A4 and prolongs the QT interval, a combination that has caused sudden cardiac death when paired with the wrong co-medication+in its favour: human data in the cited literature

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ImmunePrescriptionAnti-infective

key facts

classAntibiotic · Macrolide · Antibacterial

also known asErythrocin, Ery-Tab, Erythroped, erythromycin base and 2 more

outlets1 outlet

no structure on file

spec sheet4 rows

classAntibiotic · Macrolide · Antibacterial

also known asErythrocin, Ery-Tab, Erythroped, erythromycin base and 2 more

outlets1 outlet

all namesErythrocin, Ery-Tab, Erythroped, erythromycin base, erythromycin stearate, erythromycin ethylsuccinate

on this pageMechanism

Erythromycin is the original macrolide antibiotic, now used mainly in penicillin allergy, for atypical respiratory pathogens, and at low dose as a gut prokinetic rather than as an antibiotic at all.

works for

• The original macrolide, still a familiar name worldwide
• An option when penicillin allergy rules the others out
• Covers atypical respiratory pathogens
• Motilin agonist that speeds gastric emptying
• Low dose prokinetic use in gastroparesis

>interested? see where it’s at ^_^

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mecMechanism

It binds the 50S ribosomal subunit and blocks bacterial protein synthesis. Separately it is a motilin receptor agonistsomething that switches a receptor on, which is why low doses are used to speed gastric emptying in gastroparesis, and it is a strong CYP3A4 inhibitor with a QT prolonging effect of its own.

safSafetyrisks and cautions, not medical advice

an antibiotic that strongly inhibits CYP3A4 and prolongs the QT interval, a combination that has caused sudden cardiac death when paired with the wrong co-medication

buyWhere to buy

recommended

RUPharma · Nootropics & Research Chems

srcSuppliers

Vendors carrying Erythromycin, with live product details and codes. Links are affiliate links that support the wiki at no cost to you.

RUPharma🌐

Erythromycin

From$9

Options$9 to $34

ShipsWorldwide from Russia and India; 3 to 4 weeks to the US and Canada, and 4 to 7 days on the lines that ship express from India, Singapore or China. Europe and Asia are select destinations rather than every country

Buy at RUPharma→

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