Lasalocid

Mechanism of Action

Polyether ionophore that disrupts ion transport across coccidian cell membranes, causing osmotic imbalance and parasite death.

Species with Lasalocid dosing data (3 dose rules)

Species references:All Cattle (Beef/Dairy) drugsAll Chicken (Poultry) drugsAll Sheep (Ovine) drugs

Evidence levels across 3 dose rules

Each ExoticRx dose rule is graded by the strength of its primary evidence — see the editorial process.

Backed by 2 published sources

• · US FDA. Avatec (lasalocid sodium) Type A Medicated Article, NADA 096-298, Zoetis. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=f88f0d2b-1b04-48bf-9826-ff0e33605237 - broiler/fryer chickens, 68-113 g/ton (75-125 ppm) in feed fed continuously as sole ration; no withdrawal period required.
• · Verified against Riviere & Papich, Veterinary Pharmacology and Therapeutics, 10th Ed, p.1172 (2026-08-01). — SOURCE UNVERIFIABLE 2026-08-07: the cited book (Papich, Saunders Handbook of Veterinary Drugs (held: 4th ed, 2016)) does not contain this drug anywhere in the held copy. The reference cannot be confirmed here and the page, if any, is unchecked. It is deliberately NOT re-pointed at another text that does mention the molecule — that would assert a provenance this dose never had. Confirm against the source directly before use. — SOURCE EDITION: Saunders Handbook of Veterinary Drugs — ISBN 9780323244855, https://openlibrary.org/isbn/9780323244855; Veterinary Pharmacology and Therapeutics — ISBN 9781118855829, https://openlibrary.org/isbn/9781118855829