12. Transplant drugs
Some supplements warrant special caution if you are taking certain drugs following an organ transplant, such as a kidney or liver transplant. For example, consult your specialist before taking the following:
If you take cyclosporin: kava, peppermint, phosphorus and St. John’s Wort
If you take tacrolimus: St. John’s Wort
13. Neurology drugs
Risk of overstimulation, stomach upset and other problems can occur when certain nervous system stimulants, such as methylphenidate (Attenta, Concerta, Lorentin and Ritalin), are combined with the following supplements: astragalus, ginseng (panax) and guarana.
14. Parkinson’s drugs
Monoamine oxidase (MAO) inhibitors, such as selegiline (Eldepryl and Selgene), should not be taken within 14 days of certain dietary supplements because of a risk of anxiety, confusion, excessive sedation and other potentially serious reactions. These include green tea, St. John’s Wort, valerian and ginseng.