| DRUG / HERB | AVOID / MODERATE |
| ACE Inhibitors | Potassium-containing salt substitutes |
| Ampicillin | Carbonated beverages, acidic juices |
| Aspirin | Feverfew, ginkgo, green tea |
| Barbiturates | Valerian |
| Calcium-channel blockers | Grapefruit juice |
| Cloxacillin | Carbonated beverages, acidic juices |
| Cyclosporine | Grapefruit juice, potassium-containing salt substitutes |
| Digoxin | High-fiber foods and meals |
| Enteric-coated Pills | Excess milk, hot beverages, alcohol |
| Fluoroquinolones | High in calcium, iron, or zinc (dairy / red meat) |
| Hemorrhoid Medications | Saw palmetto |
| Indomethacin | Potassium-containing salt substitute |
| Isoniazid | High-carb foods |
| Levodopa | Excess protein |
| Lithium | Significant increase/decrease in sodium intake |
| MAO Inhibitors | Foods containing tyramine |
| Methyldopa | Excess protein |
| NSAIDS | Asian ginseng, ginkgo |
| Penicillin G | Carbonated beverages, acidic juices |
| Phenytoin | Excess protein |
| Potassium-sparing diuretics | Potassium-containing salt substitutes |
| Statin Drugs | Grapefruit and grapefruit juice |
| Tetracycline | Iron-rich food or supplements, calcium |
| Theophylline | Excess protein |
| Warfarin (Coumadin) | Vitamin K-rich foods and supplements, Asian ginseng, feverfew, garlic, ginger, ginkgo, St. John’s wort, green tea |
| Zidovudine | Excess fat |