Pre-Surgery

Pre-Surgery refers to the period before a surgical procedure, viewed here through the lens of recovery. It describes timing and context rather than a diagnosis or a treatment itself. Research associated with this topic may examine whether an intervention influences outcomes connected with the surgical course, such as recovery-related hospital care. Vitamin C is one example explored in this context, but the findings should not be taken as applying to every person or procedure.

Vitamin C is associated with several clinically important aspects of the hospital course around surgery, including time in intensive care and hospital, duration of mechanical ventilation, and atrial fibrillation. These outcomes reflect broader recovery and resource use rather than a clearly defined immediate pre-surgery effect.

Interpretation remains limited because organ dysfunction was not reported, so the findings do not establish whether Vitamin C affects that outcome. No dose, treatment duration, or timing of onset is specified here, and the information does not define which health status or surgical populations the findings apply to. These limitations make the option difficult to interpret as a general pre-surgery approach. Anyone considering supplements in relation to a planned procedure should discuss them with a clinician.

Many items are flagged before surgery because they may affect clotting or platelet function, increasing bleeding risk during or after a procedure. This includes Curcumin, Garlic, Ginger, Ginkgo Biloba, Turkey Tail, Vitamin E, Astaxanthin, Astragalus, Black Seed Oil, Cordyceps, Cranberry Extract, Horny Goat Weed (Epimedium), Lion's Mane, Lycopene, Oregano Oil, Panax Ginseng, Quercetin, Resveratrol, Saffron Extract, Shilajit, Tongkat Ali (Eurycoma), American Ginseng, Chaga, Chondroitin Sulfate, Green Tea Extract (EGCG), Krill Oil, Omega-3, Reishi, Saw Palmetto, Evening Primrose Oil, Flaxseed Oil, Holy Basil (Tulsi), and Selenium. The stated pre-surgery intervals range from 7-10 days to at least 2 weeks, depending on the item. Aloe Vera may also contribute to bleeding concerns, dehydration, electrolyte disturbances, and lower glucose; a bleeding interaction with sevoflurane has been reported. Vitamin K2 is specifically relevant when anticoagulants are used, because it may interfere with perioperative anticoagulation management.

Sedation, anesthesia, blood pressure, and monitoring can be affected by other products. Lavender Extract, Passionflower, Valerian Root, Chamomile, GABA, L-Theanine, Lemon Balm (Melissa), Ashwagandha, Bacopa Monnieri, and Tryptophan may add to central nervous system depression or complicate anesthetic management. Beetroot Extract and Citrulline may lower blood pressure, while Coenzyme Q10, Rhodiola Rosea, and Tribulus Terrestris may complicate blood-pressure control. Blood-pressure or glucose effects are also concerns with ALA, Berberine, Black Elderberry, Glucosamine, Milk Thistle (Silymarin), Panax Ginseng, and Shilajit.

Some products may interact with perioperative medicines. St. John's Wort can interact unpredictably with anesthetics and other perioperative medications; 5-HTP and Tryptophan may interact with serotonergic drugs, including fentanyl, tramadol, meperidine, linezolid, or methylene blue. CBD (Cannabidiol) may affect bleeding and anesthetic responses. Vitamin B7 (Biotin) can produce misleading results from susceptible troponin, thyroid, hormone, and other immunoassays, so its use should be disclosed to the surgical team and testing laboratory.

Cigarette Smoking is flagged because it increases pulmonary complications, anesthesia risk, wound infection, and delayed healing. For any planned procedure, supplement and medication decisions are best reviewed with the surgical and anesthesia teams.