Plain-language, evidence-graded guides to taking supplements safely: alongside your medication, in the right combinations, for what you actually want. Every guide links into the free interactions checker so you can check your own combination.
Start here
The one explainer everything else builds on.
Supplements and your medication
What is safe, what to separate, and what to avoid, by medication type.
- Which supplements to avoid with HRT (and which are fine)
- Supplements and SSRIs: what is safe and what is not
- Supplements to be careful with on levothyroxine (the timing rule)
- Supplements and blood thinners (warfarin, apixaban, rivaroxaban)
- Supplements and statins: what helps, what to skip
- Metformin and vitamin B12: the depletion worth knowing about
- Supplements and acid reducers (omeprazole, lansoprazole, PPIs)
- Supplements and the contraceptive pill
- Supplements and SNRIs (venlafaxine, duloxetine)
- Supplements and blood-pressure medication
Taking supplements together
Which combinations help, which compete, and when timing matters.
- Can you take magnesium and vitamin D together?
- Can you take iron and vitamin C together? (yes, and why)
- Zinc and copper: the ratio that matters
- Can you take calcium and magnesium together?
- Iron and calcium: why timing matters
- Can you take omega-3 and vitamin E together?
- What supplements should you not take together?
- The best time of day to take each supplement
Supplements for a goal
What the evidence actually supports, by what you are trying to do.
- The best supplements for sleep (what the evidence actually says)
- Supplements for energy and fatigue: separating signal from hype
- Supplements for stress and anxiety: what the evidence supports
- Supplements for hair, skin and nails (and the biotin blood-test trap)
- Supplements for perimenopause and the years around it
- Supplements for vegetarians and vegans: the ones that actually matter
- Supplements in pregnancy: what helps and what to avoid
The basics
How to read a label, what the grades mean, and when to test first.