DRUG/HERB INTERACTIONS GUIDE INDIAN SQUILL /I-183Digoxin
(Herb may cause hypokalemia,
which may increase digoxin
toxicity)
FUCUS VESICULOSUS
(See under Bladderwrack)
GALEGA OFFICINALIS
(See under Goat's Rue)
GERMAN CHAMOMILE
Alcohol
(May increase sedative effect)
Benzodiazepines
(May increase sedative effect)
Warfarin Sodium
(Hydroxycoumarin component in
Chamomile may elevate
prothrombin times)
GINKGO
Antithrombolytic Drugs
(Increases effect of
antithrombolytic drugs)
GINKGO BILOBA
(See under Ginkgo)
GINSENG
Hypoglycemic Drugs
(Increases hypoglycemic effect)
Loop Diuretics
(Increases diuretic resistance)
MAO Inhibitors
(Combination increases chance for
headache, tremors, mania)
GLUCOCORTICOIDS
Adonis
(Increases action of Adonis)
Kombe Seed
(Increases effects and side effects
of herb)
Licorice
(Licorice potentiates effect of
glucocorticoids)
Lily-of-the-Valley
(Increases the effect of Lily-of-
the-Valley)
Oleander
(Increased efficacy and side
effects when given simultaneously
with herb)
Squill
(Increases effectiveness and side
effects of herb)
Strophanthus
(Simultaneous administration with
herb enhance both effects and side
effects)
Strophanthus Gratus
(Simultaneous administration with
herb enhance both effects and side
effects)
GLYCYRRHIZA GLABRA
(See under Licorice)
GOAT'S RUE
Hypoglycemic Drugs
(Herb may have an additive
hypoglycemic effect when taken
with other hypoglycemic drugs)
GREEN TEA
Alkaline Drugs
(Decreased absorption of alkaline
drugs due to tannin component in
tea)
GUANETHIDINE
Ma-Huang
(Increased sympathomimetic
effects)
GUARANA
Cardiac Glycosides
(Increased effect due to potassium
loss with chronic use of herb)
Digoxin
(Herb may cause hypokalemia,
which may increase digoxin
toxicity)
HALOPERIDOL
Milk Thistle
(Silymarin in combination with
haloperidol causes a decrease in
lipid peroxidation)
HALOTHANE
Ma-Huang
(Disturbance of heart rhythm)
HENBANE
Amantadine Hydrochloride
(Increased anticholinergic action)
Antihistamines
(Increased anticholinergic action)
Phenothiazines
(Increased anticholinergic action)
Procainamide
(Increased anticholinergic action)Quinidine
(Increased anticholinergic action)
Tricyclic Antidepressants
(Increased anticholinergic action)
HORSE CHESTNUT
Anticoagulant drugs, unspecified
(Horse Chestnut has a coumarin
componant and may interact with
warfarin, salicylates and other
drugs with anticoagulant
properties)
HYOSCYAMUS NIGER
(See under Henbane)
HYPERICUM PERFORA TUM
(See under St. John's Wort)
HYPNOTICS
Valerian
(Additive effect when taken with
Valerian)
HYPOGLYCEMIC DRUGS
Bladderwrack
(Herb may have an additive
hypoglycemic effect when taken
with other hypoglycemic drugs)
Fenugreek
(Herb may have an additive
hypoglycemic effect when taken
with other hypoglycemic drugs)
Ginseng
(Increases hypoglycemic effect)
Goat's Rue
(Herb may have an additive
hypoglycemic effect when taken
with other hypoglycemic drugs)
IMMUNOSUPPRESSANTS
Astragalus
(Decreased effectiveness of
immunosuppressive effect due to
immunostimulant effect of
Astragalus)
Echinacea Angustifolia
(The immune-stimulating effect of
Echinacea may interfere with
drugs that have
immunosuppressant effects)
INDIAN SQUILL
Methylxanthines
(Can increase the risk of cardie
arrhythmias when given
simultaneously with this herb)