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Aminosalicylic acid

Antimycobacterial · Anti-tuberculosis agent

Also known as 5-aminosalicylic acid, 5-ASA

AntimycobacterialAnti-tuberculosis agent
CDSCO approved
EXCRETION
not curated
INTERACTIONS
8 major
SEVERE in our sources
PREGNANCY
Manufacturer advises avoid unless essential—toxicity in animal studies (highest risk during first trimester).
FDA category + note
Top interactionssee all 8
  • DeferasiroxSevereDatabaseDDInter
  • LeflunomideSevereDatabaseDDInter
  • LomitapideSevereDatabaseDDInter
  • MipomersenSevereDatabaseDDInter

Mechanism

The provided excerpts do not describe the mechanism of action for aminosalicylic acid as an antimycobacterial agent. Instead, 5-aminosalicylic acid is identified as an anti-inflammatory agent for inflammatory bowel disease. It primarily inhibits the proinflammatory NF-κB signaling pathway, suppressing T-cell responses and the production of cytokines such as IL-1, -6, -8, -11, -12, and TNF to reduce inflammation.

Indications

Multiple-drug resistant tuberculosis, in combination with other drugsCombination therapy after bedaquiline

Dosing

Adult
4 g every 8 hours for a usual treatment duration of 24 months
Max dose
12 g per day

Side effects

Common
Diarrhoeadizzinessgastrointestinal discomfortgastrointestinal disordershypersensitivitynauseaskin reactionsvestibular syndromevomiting
Serious
  • Agranulocytosis
  • anaemia
  • crystalluria
  • gastrointestinal haemorrhage
  • headache
  • hepatic disorders
  • hypoglycaemia
  • hypothyroidism
  • leucopenia
  • methaemoglobinaemia
  • peripheral neuropathy
  • taste metallic
  • tendon pain
  • thrombocytopenia
  • visual impairment
  • weight decreased

Pregnancy & lactation

Pregnancy

Manufacturer advises avoid unless essential—toxicity in animal studies (highest risk during first trimester).

Drug interactions

Deferasirox
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Leflunomide
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Lomitapide
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Mipomersen
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Nitrous Acid
Severe
Database

Clinical effect not specified

Source: DDInter

Pexidartinib
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

Prilocaine
Severe
Database

Clinical effect not specified

Source: DDInter

Teriflunomide
Severe
Database

Drug interaction classified as: synergy

Source: DDInter

4 additional low-confidence interactions hidden — those rows lack a documented mechanism or management plan in our sources.

Related guidelines

Other Antimycobacterial drugs

Ask House about Aminosalicylic acid

Continue into a citation-backed clinical answer with the drug context already attached.

Sources: Katzung, BNF, Nelson·Verified: 2026-05-10 · House clinical team