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Preventing Food and Drug Interactions. The University of Georgia Cooperative Extension Service. Food can affect drug absorption Food can interfere with how a drug works. A drug may affect food absorption or how vitamins or minerals are used by the body A drug can affect appetite.

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preventing food and drug interactions

Preventing Food and Drug Interactions

The University of Georgia Cooperative Extension Service

possible drug food interactions
Food can affect drug absorption

Food can interfere with how a drug works

A drug may affect food absorption or how vitamins or minerals are used by the body

A drug can affect appetite

Possible Drug-Food Interactions
mix food drink and drugs carefully
Mix Food, Drink and Drugs Carefully
  • Ask doctor questions
  • Talk to pharmacist
  • Read medicine labels
  • Read printed material from pharmacy
  • Read inserts provided by manufacturers
the responsibility is yours
The Responsibility is Yours!
  • Tell your doctor and pharmacist about ALL your drugs
  • Take all your drugs to each doctor’s appointment and review
in general
In General

Take pills and capsules with a large glass of water

a new concern grapefruit
A New Concern - Grapefruit
  • Can cause more of a drug to be absorbed from intestine – even toxic levels
  • May cause a drug not to work
  • Also avoid tangelos
pain medicine
Pain Medicine
  • Don’t take with alcohol to prevent stomach bleeding and irritation
  • Don’t have more than 3 drinks per day to prevent liver damage if taking Tylenol
high blood pressure medicine
High Blood Pressure Medicine
  • May need more or less potassium in your diet depending on the medicine
  • Examples of high potassium foods – bananas, oranges, potatoes, leafy green vegetables, tomatoes

Always Ask!

alcohol and other medicines for the heart
Can lower blood pressure too much with beta blockers and nitrate containing drugs

Can cause liver damage with statin drugs

Beta blocker – Inderal, Lopressor

Nitrates – Nitro, Transderm Nitro, Isordil

Statins – Lipitor, Mevacor, Zocor, Prevachol

Alcohol and Other Medicines for the Heart
coumadin and vitamin k
Coumadin and Vitamin K
  • Keep intake of foods containing Vitamin K constant
  • Vitamin K is high in spinach, kale, turnip greens, cauliflower, broccoli, brussel sprouts and other leafy greens
  • Also don’t take Vitamin K or E supplements
flagyl or nizoral
Flagyl or Nizoral
  • No alcohol including medicines containing alcohol while taking the medicine and for 3 days after stopping
  • Side effect – nausea, flushing, stomach cramps, vomiting, headaches
no dairy foods
No Dairy Foods
  • Tetracycline - also no iron supplements
  • Antifungal medicines
    • Examples Diflucan and Nizoral
medicines for depression and anxiety
Medicines for Depression and Anxiety
  • Never mix with alcohol with any of these drugs!
  • Also caffeine may decrease the effectiveness of anti-anxiety drugs
moa inhibitors
MOA Inhibitors
  • Common brands – Nardil and Parnate
  • Must restrict some foods containing tyramine to prevent possible fatal rise in blood pressure
moa inhibitors18
MOA Inhibitors
  • No beer, red wine or other alcohol
  • No cheddar, American, bleu, brie, Parmesan or mozzarella cheese
  • No beef or chicken liver, cured meats, game meat, caviar or dried fish
moa inhibitors19
No avocados, bananas, soy sauce, miso soup, sauerkraut

No ginseng, broad or fava beans or food or beverages containing caffeine like coffee, chocolate, cola drinks, tea

MOA Inhibitors
stomach medicines
Stomach Medicines
  • Examples – Zantac, Tagamet, Pepcid, AXID
  • Alcohol and caffeine may irritate stomach
in summary
Tell your doctor and pharmacist about all your medicines

Take your medicines to every doctor visit

Learn all you can about your drugs

Use alcohol and caffeine very cautiously if at all

Drink plenty of water

In Summary
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