DRUG/HERB INTERACTIONS GUIDE DIGITALIS /I-181CALCIUM
Adonis
(Increases action of Adonis)
Lily-of-the-Valley
(Increases the effect of Lily-of-
the-Valley)
Squill
(Increases effectiveness and side
effects of herb)
CALCIUM SALTS
Kombe Seed
(Increases effects and side effects
of herb)
Oleander
(Increased efficacy and side
effects when given simultaneously
with herb)
Strophanthus
(Simultaneous administration with
herb enhance both effects and side
effects)
Strophanthus Gratus
(Simultaneous administration with
herb enhance both effects and side
effects)
CAMELLIA SINENSIS
(See under Green Tea)
CAPSICUM ANNUUM
(See under Cayenne)
CARBONIC ANHYDRASE INHIBITORS
White Willow
(Potentiates action of salicylates)
CARDIAC GLYCOSIDES
Aloe
(Increases effect of cardiac
glycosides)
Buckthorn
(Increased effect due to potassium
loss with chronic use of herb)
Cascara Sagrada
(Increased effect due to potassium
loss with chronic use of herb)
Chinese Rhubarb
(Increased effect due to potassium
loss with chronic use of herb)
Frangula
(Increased effect due to potassium
loss with chronic use of herb)
Guarana
(Increased effect due to potassium
loss with chronic use of herb)
Ma-Huang
(Disturbance of heart rhythm)
CARDIOACTIVE STEROIDS
Castor Oil Plant
(Increased effect due to potassium
loss with chronic use of herb)
CARICA PAPAYA
(See under Papaya)
CASCARA SAGRADA
Antiarrhythmics
(Potentiates arrhythmias with
prolonged use of Cascara)
Cardiac Glycosides
(Increased effect due to potassium
loss with chronic use of herb)
Corticosteroids
(Increases hypokalemic effect)
Digoxin
(Herb may cause hypokalemia,
which may increase digoxin
toxicity)
Indomethacin
(Decreases therapeutic effect of
Cascara)
Thiazide Diuretics
(Increases hypokalemic effect)
CASSIA SENNA
(See under Senna)
CASTOR OIL PLANT
Cardioactive Steroids
(Increased effect due to potassium
loss with chronic use of herb)
CAYENNE
Aspirin
(Decreased bioavailability of
aspirin)
CENTRAL NERVOUS SYSTEM
STIMULANTS
Ma-Huang
(Ma-Huang has an additive effect
on the CNS when combined with
CNS stimulants)
CHASTE TREE
Dopamine Antagonists
(Decreased dopaminergic effect of
herb)
CHINESE RHUBARB
Cardiac Glycosides
(Increased effect due to potassium
loss with chronic use of herb)Digoxin
(Herb may cause hypokalemia,
which may increase digoxin
toxicity)
CINCHONA PUBESCENS
(See under Quinine)
COFFEA ARABICA
(See under Coffee)
COFFEE
Drugs, unspecified
(Herb can hinder (or decrease)
resorption of other drugs)
CONVALLARIA MAJALIS
(See under Lily-of-the-Valley)CORTICOSTEROIDS
Aloe
(Increased potassium loss)
Buckthorn
(Increases hypokalemic effects)
Cascara Sagrada
(Increases hypokalemic effect)
Echinacea Angustifolia
(Echinacea may potentially
interfere with the anti-cancer
chemotherapeutic effect of
corticosteroids)
CYCLOSPORINE
St. John's Wort
(The herb induces the cytochrome
P450 enzyme system and will
lower cyclosporine serum levels)
CYTISUS SCOPARIUS
(See under Scotch Broom)
DATURA STRAMONIUM
(See under Jimson Weed)
DIAGNOSTIC PROCEDURES USING
RADIOACTIVE ISOTOPES
Bugleweed
(Herb interferes with these
isotopes)
DIGITALIS
Methylxanthines
(Increases risk of cardiac
arrhythmias)
Phosphodiesterase Inhibitors
(Increases risk of cardiac
arrhythmias)