Anileridine (trade name: Leritine) is a synthetic analgesic drug[2] and is a member of the piperidine class of analgesic agents[3] developed by Merck & Co. in the 1950s.

[4] It differs from pethidine (meperidine) in that the N-methyl group of meperidine is replaced by an N-aminophenethyl group, which increases its analgesic activity.

[5] Anileridine is in Schedule II of the Controlled Substances Act 1970 of the United States as ACSCN 9020 with a zero aggregate manufacturing quota as of 2014.

The free base conversion ratio for salts includes 0.83 for the dihydrochloride and 0.73 for the phosphate.

[7] Anileridine usually takes effect within 15 minutes of either oral or intravenous administration, and lasts 2–3 hours.