Inorganic compound. Accumulates in bone tissue. Not metabolised. Two references use with care/authorised.

(To be edited, initial data ST OCT 04) Bisphosphonate which is an analogue to naturally occuring pyrophosphate. Absorbed to bone it counteracts osteoporosis. South African list: use with care. French list: authorized.

Uneventful use reported in 1 patient with acute porphyria.