Regulation: control status by country
Domestic control status of a substance in a country (narcotic, psychotropic, prescription-only) from official sources.
theophylline: status by country
- United Statesprescription only
Source: openFDA NDC · record 01a1208c-4f1e-7d3b-ae14-e0d35e91fb1d,01a1208c-7265-7225-92a7-92729cb20ded,01a1208c-88c7-72c5-a4ca-1e5b6bcf1211,01a1208c-a6de-726e-a4d6-d3a3a2dca0fb,01a1208d-3b5f-7895-a050-802591c9fa26;count=51 · valid from 2026-10-09 · verified 2026-10-09