Antibiotics (fluoroquinolones, ciprofloxacin, nitrofurantoin, TMP-SMZ antibiotics such as Bactrim, Septra, Cotrim and Sulfatrim)
v Cranberry Theoretically some antibiotics could be inhibited by the reduced urinary pH caused by cranberry. (BG)
v Fennel appears to reduce blood levels of ciprofloxacin, possibly impairing its effectiveness. (HB)
v Iron supplements may inhibit the absorption of antibiotics in the tetracycline and quinolone families. Separating intake of the iron and drugs by at least 2 hours is likely to forestall any absorption problem. (BG)
v Magnesium can interfere with absorption of antibiotics in the tetracycline and fluoroquinolones families. To avoid this problem, magnesium should be taken at least 2 hours before or after taking these drugs. (BG)
v Zinc supplements can interfere with the absorption of tetracyclines, fluoroquinolones and penicillamine. (BG)
. . .
Gingko
v Gingko interacts with aspirin and warfarin causing increased risk of bleeding by inhibiting platelet aggregation factor. (RR)
v Gingko has a blood thinning effect and therefore may be dangerous to take along with heparin (HB) and anticoagulants and antiplatelet agents. (LSR)
v Ginkgo is known to inhibit platelet activation factor and for this reason it is advisable to use caution when combining ginkgo with warfarin, heparin, aspirin or any other drugs with anticoagulant or antiplatelet effects. One case report suggests a probable interaction between ginkgo and aspirin. (BG)
v Ginkgo may increase the action of MAOIs if taken concurrently (theoretical). (LSR)
v Ginkgo may decrease the anticonvulsant effect of anticonvulsants; avoid concurrent use. (LSR)
v Ginkgo may interact with acetaminophen to increase the risk of bleeding. [xxx]
v It is conceivable that ginkgo could interact with garlic, phosphatidylserine, policosanol and vitamin E. (BG)