Work out drug interaction risk count instantly with clear inputs, formula shown and shareable results.
Counts the pairwise combinations in a medicines list, which grows quadratically, and expresses the identified interactions as a share of them.
Pair count
Possible pairs = n(n - 1) / 2 for n medicines; interaction share = known interacting pairs / possible pairs x 100
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
Pairs grow quadratically: five medicines give 10 pairs but ten medicines give 45.
No. Many are theoretical; clinical significance depends on dose, timing and patient factors.