A key part of pre-operative preparation is a complete disclosure list for your surgical and anesthesia teams to review, with input from your prescribing clinicians when needed. Prescription medicines, over-the-counter pain relief, supplements, nicotine, alcohol use, recent illness, and previous treatments can all matter. Do not change medicines or supplements on your own based on an online article.
Why this has to be a team decision
Any change to prescription medication, including blood thinners or hormonal medication, should be discussed with both your surgical team and the physician who originally prescribed it. Stopping certain medications without coordinated medical guidance carries its own risks, entirely separate from the surgery itself. This applies even to medications that might seem minor or unrelated.
What's worth disclosing, and why
Prescription blood thinners, such as those prescribed for a cardiac or vascular condition, should never be adjusted independently. This requires coordination between your surgeon, anesthesiologist, and prescribing physician, since stopping them abruptly can carry real risk on its own.
Over-the-counter pain relievers like aspirin or NSAIDs are commonly avoided for a period before surgery because of their effect on bleeding. The specific timeframe should come from your own surgical team rather than a general online guideline, since it can depend on your health history. If aspirin has been prescribed for a cardiovascular condition, do not stop it without coordinated medical advice.
Tell your team about all supplements you use, including vitamin E, fish oil, ginkgo, ginseng, garlic supplements, CoQ10, St. John’s Wort, and echinacea. Depending on the product, possible concerns include interactions with anesthesia or other medicines, or effects on bleeding, blood pressure, and heart rate. These are examples that come up often in these conversations; they don't all carry the same type or level of risk, and your surgical team can tell you which ones actually matter for your specific plan. Bring the bottles, or a full list, to your consultation rather than trying to recall names from memory.
Current or recent isotretinoin (Accutane) use should be disclosed. Whether it affects surgical timing depends on the planned procedure and your individual circumstances. Do not assume that a fixed waiting period applies to everyone. Hormonal medication, including contraception, should also be disclosed. Some estrogen-containing products may affect clotting risk, and certain medicines used during anesthesia can affect contraceptive effectiveness. Any adjustment or need for additional contraception should be discussed with your care team.
Smoking and nicotine products, including vaping, affect blood vessels and healing. Most surgeons ask patients to stop for a period before and after surgery. Confirm the specific timeframe and any smoking cessation aids with your own team.
Tell your team how much and how often you drink, and follow their instructions about avoiding alcohol before surgery. If you may be dependent on alcohol, seek medical advice before stopping abruptly, because withdrawal can be dangerous.
Include medicines used for diabetes or weight management, including GLP-1 medicines such as semaglutide, because they may affect your anesthesia and fasting plan. Do not change them without instructions from your care team.
Pain relief before surgery
Acetaminophen or paracetamol is commonly discussed as a lower-bleeding-risk option compared to NSAIDs, but it isn't automatically appropriate for everyone. Some people have contraindications related to liver function or other health factors. Confirm any pre-surgery pain relief plan with your surgical team rather than assuming a general recommendation applies to you specifically.
Fasting instructions
Instructions about eating and drinking before surgery come from your anesthesia team, based on your specific procedure and health profile, and should be followed exactly as given rather than estimated from general guidance you've read elsewhere. These protocols exist for real safety reasons connected to anesthesia.
Building your own disclosure list before your appointment
It helps to prepare a written list before your pre-operative appointment rather than trying to recall everything from memory in the moment. Include prescription medications with dosages, any supplements or vitamins you take regularly or occasionally, recent changes to your health, and any procedures or treatments you've had in the months leading up to surgery, including dental work or other minor interventions. A written list also gives your surgical team something concrete to review and flag questions against, rather than relying on a verbal recap that's easy to leave gaps in.
Build a one-page medication and health inventory
Create a single document with the name, dose, and frequency of every prescription medicine, vitamin, supplement, and occasional over-the-counter product you use. Add allergies, existing medical conditions, recent illnesses, previous reactions to anesthesia, nicotine and alcohol use, and any treatment or procedure completed recently. Photograph the labels if spelling or dosage is difficult to remember. Update the list if anything changes between consultation and surgery, then send the new version to the team rather than assuming a small change is irrelevant.
What to disclose regardless of this list
Any new medication, supplement, or health change between your consultation and surgery date should be flagged to your surgical team promptly, even if it seems minor. The same goes for cold or flu symptoms close to your surgery date. Active illness can be a reason to reschedule, and it's better to raise it early than to wait and see.
Pre-operative questions that are better answered early
Should I stop a prescription or supplement on my own before surgery?
No. Medication changes should be coordinated with the surgical team, anesthesiologist, and prescribing clinician when relevant. Stopping some medicines can create risks of its own.
What belongs on my disclosure list?
Include prescription medication with doses, over-the-counter pain relief, vitamins, herbal products, supplements, isotretinoin history, hormonal medication, nicotine use, alcohol use, allergies, and recent health changes.
Should I bring the actual supplement bottles?
That can be useful when names, doses, or ingredients are difficult to remember. A written list or clear photographs of the labels can also make review more accurate.
What if I develop a cold or flu close to the operation?
Tell the surgical team promptly rather than waiting until the day of surgery. Active illness can affect whether the procedure should go ahead as planned.
Can I use a general online fasting rule?
No. Eating and drinking instructions come from the anesthesia team and should be followed exactly as given for your procedure and health profile.
Which painkiller is safe before surgery?
Do not assume that one over-the-counter option is suitable for everyone. Confirm the plan with the surgical team, particularly if you have liver, bleeding, allergy, or other health considerations.
Prepare by sharing, not guessing
Preparation means giving the team complete information early enough to act on it. Do not stop, start, or adjust a medicine or supplement without coordinated advice from the clinicians responsible for your surgery and ongoing care.
