FROM MY PT SCHOOL NOTES · NUTRITION · UNIT 2 · CHAPTER 06
Supplements and Food–Drug Interactions
This lecture emphasizes that dietary intake can alter a drug’s effect and drugs can alter intake, absorption, metabolism, or excretion of nutrients.
What matters most
- Medication effects on eating. Dry mouth, nausea, altered taste, oral discomfort, constipation, or appetite changes can reduce food intake.
- Absorption and timing. Some foods and medications influence gastric conditions, absorption, or transit time; interaction significance depends on the specific drug and its instructions.
- Grapefruit interactions. Grapefruit can raise or lower exposure to certain medications; do not generalize the warning to every drug in a class.
The PT connection
During a PT medication review, document relevant prescribed and over-the-counter products and refer potential interactions to a pharmacist, prescriber, or RDN. Do not discontinue medications or recommend supplemental doses.
Current-practice perspective
The source’s long drug-interaction chart is not copied because it may be out of date. Current drug labeling and pharmacy review are necessary for specific interaction advice.
From my original course material: 6 Supplements.pdf (pp. 2–22). These are personal PT-school class notes adapted for education. Historical claims require current source verification. Not individualized nutrition advice or a substitute for a registered dietitian or prescribing team.
