C09BA06 - Quinapril and Diuretics |
Propably not porphyrinogenic |
PNP |
Rationale
quinapril: No evidence of CYP-dependent metabolism. Hydrochlorthiazide: Not metabolised. Probably no CYP-affinity. Clinical experience of non-porphyrinogenicity. Conflicting evidence.
Chemical description
(To be edited, initial data ST OCT 04) quinapril: HCl-salt of quinapril, which is a prodrug of the metabolite quinaprilate is excreted unchanged by the kidneys. Hydrochlorthiazide: thiazide diuretic, sulfonamide congener. Eliminated in urine in unchanged form. Probably no CYP-affinity. Hydrochlorthiazide: South African list: use. French list: authorized. Australian list: unsafe associated with attacks. Thunell, patient report (n=1): tolerated. Andersson, patient reports (n=10): tolerated. Martindale: Hydrochlorthiazide has been associated with acute attacks of porphyria and is considred unsafe in porphyric patients. EPI-list: sulfonamides are on the unsafe list.
IPNet drug reports
Uneventful use reported in 1 patient with acute porphyria.
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