Supplements and Minocycline.
Minocycline, sold under the brand names Minocin, Aknemin, Sebomin MR, is classified under "tetracycline" in the BNF.
Minocycline is an antibiotic, usually taken as a short course, and the supplement questions people ask most when given one have reassuring answers. Probiotics are fine to take alongside it and lower the chance of antibiotic-related diarrhoea: space a bacterial probiotic, most Lactobacillus or Bifidobacterium products, about two hours from your dose, while Saccharomyces boulardii, which is a yeast, can be taken at the same time. Most everyday vitamins and minerals have no significant interaction with a short antibiotic course, so a daily multivitamin, vitamin D or vitamin C is generally not a concern. The combinations that genuinely matter are listed below with their evidence, and they tend to be specific: supplements that thin the blood, serotonergic supplements stacked on certain antibiotics, and supplements that are really a prescription drug in disguise, such as red yeast rice, which contains the statin lovastatin. One timing rule applies to Minocycline specifically: calcium, iron, magnesium and zinc bind it in the gut and reduce how well it is absorbed, so separate any of those supplements from your dose by about two hours. The sensible step in every case is to tell your pharmacist what you already take, which is free at any UK community pharmacy.
Below are the 9 documented pairs we have explicitly assessed against Minocycline in the Distil database: 8 amber and 1 green. The pairs cluster around 3 mechanisms: Mineral chelation (absorption), Additive raised intracranial pressure, and Probiotic timing with antibiotics. Every call is cited to either a clinical reference (PMID) or the British National Formulary. Anything not on this list is either still to be assessed or beyond our database scope. The checker beneath surfaces assessments by supplement, and the missing-item form at the bottom of the page routes any uncatalogued supplement into our next curation pass.
Documented interactions
Mineral chelation (absorption)
Calcium can bind to minocycline in the gut and reduce how much antibiotic you absorb. Minocycline is affected less than older tetracyclines, but it is still sensible to separate them: take minocycline at least 2 hours before or 6 hours after a calcium supplement (or calcium-rich foods like dairy).
Iron can bind to minocycline in the gut and lower how much antibiotic your body absorbs, which may make it less effective. Minocycline is absorbed better than older tetracyclines so the effect is smaller, but it is still worth keeping the two apart: take minocycline at least 2 hours before or 6 hours after your iron supplement.
Magnesium can bind to minocycline in the gut and reduce how much antibiotic you absorb. The effect is smaller than with older tetracyclines, but keep them apart: take minocycline at least 2 hours before or 6 hours after a magnesium supplement.
Magnesium can bind to minocycline in the gut and reduce how much antibiotic you absorb. The effect is smaller than with older tetracyclines, but keep them apart: take minocycline at least 2 hours before or 6 hours after your magnesium.
Magnesium can bind to minocycline in the gut and reduce how much antibiotic you absorb. The effect is smaller than with older tetracyclines, but keep them apart: take minocycline at least 2 hours before or 6 hours after your magnesium.
Zinc can bind to minocycline in the gut and reduce how much antibiotic you absorb. The effect is smaller than with older tetracyclines, but keep them apart: take minocycline at least 2 hours before or 6 hours after a zinc supplement.
Zinc can bind to minocycline in the gut and reduce how much antibiotic you absorb. The effect is smaller than with older tetracyclines, but keep them apart: take minocycline at least 2 hours before or 6 hours after your zinc.
Additive raised intracranial pressure
Both high-dose vitamin A and minocycline can, on their own, raise the pressure of fluid around the brain, causing headaches and visual disturbance (a condition called benign intracranial hypertension). Minocycline is one of the better-known antibiotic causes, so combining it with high-dose vitamin A may add to the risk. If you take minocycline, avoid high-dose vitamin A supplements and tell your prescriber about new or worsening headaches or vision changes.
Probiotic timing with antibiotics
These are fine to use together, and probiotics may lower the chance of antibiotic-related diarrhoea. If you take a bacterial probiotic (most Lactobacillus or Bifidobacterium products), space it about two hours away from your minocycline dose so the antibiotic does not reduce the live bacteria. Saccharomyces boulardii is a yeast rather than a bacterium, so the antibiotic does not affect it and it can be taken at the same time. The main exception is if your immune system is seriously weakened or you are critically ill in hospital, when probiotics should be checked with your doctor first.
What this list does not say. Pairs not flagged here are not implicitly safe. They are either not yet in our database, or fall outside our inclusion scope (food-supplement interactions only; for drug-drug interactions, the BNF is authoritative). Use the checker below to surface any supplement, and submit a missing item if you take something we have not catalogued.
How we grade severity, choose what's in scope, and what we exclude.
Every call on this page is reasoned. We publish the full rubric for severity tiers, the medication inclusion logic, the evidence grades we accept, and what we deliberately leave out. About three thousand words. Worth reading once if you use this tool more than occasionally.
Read the full methodologyWant this reasoning across everything you take?
This page checks the pairs you enter. A personalised Distil report applies the same graded, cited reasoning to your whole stack: your goals, conditions, medications, diet, and the compounds worth adding or dropping. The interactions check is one section of it. You can read a real one in full before you decide.
See a real sample reportSomething missing?
If a supplement or medication you take isn't in our autocomplete, tell us. We go through what people flag every week and add what's missing.