Pharmaceutical Nutrient Depletion
- Olga Brennan
- Feb 21
- 3 min read
Updated: Feb 25
In this post, I have compiled a list of commonly prescribed drugs and their resultant vitamin deficiencies. As you may suspect, the side effects of most common drugs emerge from the nutrient depletion caused by them. Organ systems pay a toll in order to expel, degrade and process foreign substances. It is very common to end up treating side effects of drugs with more and more drugs, which leads to deeper, more severe nutrient loss.
Mechanisms of Depletion: Nutrients may be depleted through various mechanisms, such as reduced absorption (e.g., PPIs lowering stomach acid), increased excretion (e.g., diuretics flushing out minerals), interference with metabolism (e.g., statins inhibiting CoQ10 synthesis), or disruption of gut microbiota (e.g., antibiotics affecting vitamin production).
The following table lists the effects of each nutrient deficiency:
Additional Notes:
Overlap in Symptoms: Many nutrient deficiencies share symptoms like fatigue, weakness, and irritability because these nutrients often work together in metabolic pathways (e.g., B vitamins in energy production).
Severity: Mild deficiencies might cause subtle symptoms (e.g., fatigue), while severe or prolonged deficiencies can lead to serious conditions (e.g., scurvy from Vitamin C deficiency or beriberi from Vitamin B1 deficiency).
Compounding Effects: Medications depleting multiple nutrients (e.g., corticosteroids affecting calcium, magnesium, and Vitamin D) can lead to compounded symptoms like osteoporosis or muscle dysfunction.

When things just don't add up, try subtracting...




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