Resuming medication after a hair transplant: timings and precautions by treatment

Why each medicine has its own timing

A treatment is paused around a transplant for three main reasons. It may increase bleeding from the thousands of tiny incisions made in the donor and recipient areas; it may interfere with sedation, when sedation is added to local anaesthesia; or it may be applied directly to skin that is still healing. The restart date follows from that reason: a medicine stopped because of bleeding comes back once the prescriber considers that risk under control, whereas a product applied to the scalp waits until the skin can tolerate it.

For blood thinners, the NHS asks patients to make sure their doctor or surgeon knows about the medicine before any surgery, because it may need to be stopped for a short time (NHS, 2024). Ask for both dates in writing, the day of the last dose and the day you start again, rather than a vague instruction such as “stop two days before”, and have the post-operative plan confirmed once the procedure is over. You can ask for the same precision for each of your medicines, since every pause planned before the transplant needs a restart date. Each stage of preparation, from the first consultation to your departure for Istanbul, is set out in our complete hair transplant guide.

The usual timings, treatment by treatment

The table brings together the most common timings, which still need confirming for your own case.

Treatment	Usual timing
Regular medicines (blood pressure)	No pause unless told otherwise
Blood thinner, antiplatelet	Date written by the prescriber
Ibuprofen and other NSAIDs	Once the surgeon agrees
Garlic, hawthorn or ginkgo capsules	Once the team agrees
Semaglutide and other GLP-1 drugs	Date and dose set by the doctor
Oral minoxidil	Usually 1 to 3 days after
Topical minoxidil (lotion, foam)	Usually between day 7 and 14
Finasteride	Can be continued without a pause

Medicines the clinic gives you for the first few days

When you leave the clinic, you receive an aftercare kit, the medicines for the first few days and written instructions. Depending on the protocol, the set includes a preventive antibiotic, a painkiller and topical products for the donor and recipient areas. Take the antibiotic until the end of the stated course, even once the discomfort has gone, and keep the box or leaflet of each product to show your GP or pharmacist when you get home.

For pain, stick to the painkiller chosen by the medical team. Ibuprofen and aspirin reduce the action of platelets, which is why surgeons are cautious with them while the scalp heals: take them only with the surgeon’s agreement, including for a headache unrelated to the transplant. How the painkiller is chosen and when an anti-inflammatory may become possible again are covered in a dedicated article on choosing between ibuprofen and paracetamol after a transplant.

Our post-operative instructions rule out alcohol for the ten days following the procedure, all the more so if you have been prescribed an antibiotic. This sits alongside the washing, sleeping and protection rules described in our advice on caring for your hair after a hair transplant. Before buying an over-the-counter medicine during this period, for a cold, an allergy or poor sleep, show your pharmacist the list of what the clinic gave you so they can check the combination.

Long-term treatments: keep taking them unless told otherwise

Medicines that control a long-term condition, whether blood pressure, thyroid disease, diabetes, asthma, epilepsy or depression, are not stopped for a hair transplant without explicit instructions. Interrupting them can destabilise the condition they treat, with consequences that have nothing to do with the scalp. When a doctor adjusts a dose around the procedure, for example a diabetes medicine on the morning of the transplant when sedation is planned, they also give you the restart date and dose.

The contraceptive pill and hormone replacement therapy follow the same rule: you list them in your medical file, and any change comes from a doctor. For antidepressants, the precautions linked to sedation and to certain painkillers are covered in our article on hair transplants and antidepressants.

Time difference: keeping fixed-time doses on track

Istanbul stays on UTC+3 all year, which puts it two hours ahead of London in summer and three hours ahead in winter. For a medicine taken at a fixed time, such as a contraceptive pill, insulin or a twice-daily blood thinner, ask your pharmacist before you travel how to spread the doses during your stay and after your return. Keep your usual medicines and their prescriptions in your hand luggage, so you are not left without them if a flight is delayed or a suitcase goes missing.

Blood thinners and antiplatelets: a restart date set by the prescriber

These medicines raise the most delicate question, because both possible mistakes have serious consequences. Continued without adjustment, they can increase bleeding from the operated area; stopped for too long, they expose you, depending on the condition being treated, to a clot, a heart attack or a stroke. A meta-analysis of six studies linked stopping or not adhering to aspirin, in people with or at risk of coronary artery disease, to a roughly three-fold higher risk of a major cardiac event (Biondi-Zoccai et al., 2006).

The decision belongs to the doctor who manages the treatment, whether a cardiologist or your GP: they decide whether to pause it, for how many days and whether a bridging injection is needed. The surgeon, for their part, assesses the bleeding risk of your transplant. How that decision is reached before the procedure is the subject of a separate article on managing aspirin and blood thinners before the transplant. After the procedure, the check-up at the clinic the following day shows the state of the incisions, which helps the prescriber confirm the restart date.

The errors to avoid at this stage are a medicine that nobody re-prescribes after the procedure and an oral anticoagulant restarted on top of a bridging injection. Both are easier to prevent when everyone knows who is responsible for prescribing the restart and the date is written down. While you are on a blood thinner, the NHS advises speaking to your GP, anticoagulant clinic or pharmacist before taking any other medicine, including over-the-counter products, as some of them change how it works (NHS, 2024); anti-inflammatory painkillers in particular add to the bleeding risk.

Supplements and herbal products: sort them before restarting

Supplements are often left off the list given to the surgeon, even though some of them act on blood clotting. A literature review published in 2022 ranked the best-selling supplements according to their link with bleeding (Hatfield et al., 2022). Garlic and hawthorn supplements were strongly associated with surgical bleeding, even without an anticoagulant. In people already taking an anticoagulant, ginkgo, turmeric, glucosamine with chondroitin and melatonin, sometimes taken to sleep better in the first few nights, were associated with an increased risk of bleeding.

The same review is more reassuring about other products. It does not link bleeding to fish oil rich in omega-3, for which several randomised trials are reassuring, nor to ginseng or saw palmetto, which appears in some hair supplements. The authors nonetheless advise stopping non-essential supplements two weeks before surgery and, above all, telling the doctor about them; your team may therefore ask for a precautionary pause, even for a low-risk product.

Restarting follows the same logic as stopping. A supplement linked to bleeding comes back with the team’s agreement, once healing is under way, whereas a product with no effect on clotting can return sooner. Hair supplements sometimes combine several plants and vitamins, so send the exact composition, with the dose and brand, rather than the product name alone. For biotin, zinc or iron, the real question is whether you still need them, since these are meant to correct a deficiency, and your GP can tell you whether they are worth continuing.

Semaglutide and testosterone: the restart is set by the prescriber

GLP-1 receptor agonists such as semaglutide (Ozempic, Wegovy) slow down the emptying of the stomach. Any pause is aimed at sedation, when it is added to local anaesthesia, because a stomach that empties slowly raises the risk of inhaling its contents during sedation or general anaesthesia. Joint guidance from five medical societies, including the American anaesthesiology, bariatric surgery and gastroenterology societies, leaves the decision to a discussion between the patient, the surgeon, the anaesthetic team and the prescriber (Kindel et al., 2025). The treatment can be continued when there is no added risk; if it is held, the suggested pause is the day of the procedure for a daily formulation and the week before for a weekly injection.

The factors that weigh in this decision include the dose-escalation phase, a high dose, a weekly formulation and symptoms such as nausea, vomiting or constipation. Restarting is then a matter for the doctor who manages your diabetes or weight: they set the restart date and dose, regardless of how the grafts are settling in.

For testosterone, whether gel or injection, the restart date is up to the doctor who prescribes it. It is also worth discussing with the surgeon for another reason: the body converts part of its testosterone into DHT, the hormone that shrinks the follicles affected by androgenetic alopecia, so hormone treatment can influence how your native hair evolves. This mechanism is explained in our article on DHT and hair loss.

Minoxidil and finasteride: timing depends on how they are taken

These two treatments act on androgenetic alopecia rather than on healing. Their main role is to protect native hair, the hair that was not transplanted and remains exposed to shedding, whereas grafts taken from the back of the head are more resistant to it. A consensus published in 2026 by an international panel of hair transplant surgeons, using a three-round Delphi method, gives precise timings: low-dose oral minoxidil can generally be taken 1 to 3 days after the procedure, and topical minoxidil can be applied to the grafted area 7 to 14 days afterwards (Gupta et al., 2026).

The gap between the two forms comes down to contact with the skin. A lotion goes onto incisions still covered in scabs and can irritate healing skin, while a tablet never touches the scalp. Your follow-up contact in the first days falls within this window, which makes it the right moment to confirm when the lotion can restart, depending on how the scabs after a hair transplant are clearing.

Finasteride, taken by mouth, was studied in a randomised placebo-controlled trial of 79 men aged 20 to 45 having a transplant. The 1 mg daily dose was taken without interruption, from four weeks before the transplant to 48 weeks after, and was well tolerated; a visible increase in hair on the top and front of the scalp was recorded in 94% of treated patients against 67% on placebo, with an improvement in the non-transplanted hair around the grafted area (Leavitt et al., 2005). When neither the surgeon nor the prescriber has asked for a pause, the treatment can therefore carry on around the procedure, as it did in this trial; if a pause was requested, the restart date comes from the doctor who requested it.

Starting a treatment after the transplant is a different decision from restarting one. Finasteride is a prescription medicine for men, oral minoxidil is prescribed after checking body weight and blood pressure, and minoxidil should be avoided during pregnancy and breastfeeding (Gupta et al., 2026). Regimens, side effects and the situations where one is preferred over the other are covered in the article dedicated to restarting minoxidil and finasteride after a transplant.

Which signs mean you should call after restarting?

A medicine that is restarted or added can cause an allergic reaction: swelling of the face, lips or throat, or difficulty breathing mean you should call 999 straight away, and a spreading rash needs medical advice the same day. For treatments that affect clotting, the NHS lists blood in your urine, blood when you poo or black poo, severe bruising, prolonged nosebleeds, bleeding gums and vomiting or coughing up blood among the signs of bleeding too easily (NHS, 2024); a painful, swollen leg or sudden breathlessness can point to a clot. These signs call for prompt medical advice, through NHS 111 if it is not an emergency.

On the scalp, bleeding that starts again is managed with the clinic’s pressure instructions, using sterile gauze and without rubbing the grafts; let the team know if it does not stop. Increasing redness around the incisions, pus or a fever suggest an infection and mean you should contact the clinic or your GP quickly, rather than taking an antibiotic left over from a previous illness on your own.

Frequently asked questions

What should I do if I forgot to restart a medicine?

Contact the doctor who prescribes it or your pharmacist before restarting it on your own. For several medicines, blood thinners in particular, a missed dose is not made up by doubling the next one, and what to do depends on how much time has passed. Mention the missed restart at your next follow-up appointment too, especially if it concerns an antiplatelet or an anticoagulant.

Can a pharmacist help me plan the restart?

Your community pharmacist can check that the medicines from the clinic fit with those you already take, including anything bought over the counter. If you live with several conditions or take a complex mix of medicines, ask your pharmacist or GP to review them before the procedure and again once you are home. Bring the clinic’s discharge prescription and the list of your usual medicines: the pharmacist can spot combinations to avoid and help you draw up a dated plan.

Do I need to take medication for life after a hair transplant?

The medicines the clinic gives you only serve the healing period. A long-term hair loss treatment, such as finasteride or minoxidil, is never required by the transplant itself: it is worth discussing when alopecia continues on the hair that was not transplanted. Its effect stops when you stop taking it, which makes it a choice to weigh up with your doctor according to your age, how your hair loss is progressing and how well you tolerate the product.

Planning your restart with our team, from Istanbul to home

Tell us about your treatments from your very first conversation with your English-speaking patient coordinator, including supplements and hair products. The surgeon takes them into account in your treatment plan, so that adjustments to a blood thinner or a long-term medicine can be prepared with your GP several weeks before you travel. During your stay, your coordinator keeps you in touch with the medical team at our partner clinic, and you leave with its written post-operative instructions, which your GP supplements for your usual medicines.

Back home, you benefit from 12 months of post-operative follow-up carried out remotely. Any question about a medicine or a supplement can be raised there: our team tells you what healing allows, and decisions about a long-term treatment remain with your own doctor. To plan your hair transplant in Istanbul, send your photos and the list of your medicines; you will get a free, no-obligation quote within 24 hours.

Sources

Biondi-Zoccai, G. G. L., Lotrionte, M., Agostoni, P., Abbate, A., Fusaro, M., Burzotta, F., Testa, L., Sheiban, I., & Sangiorgi, G. (2006). A systematic review and meta-analysis on the hazards of discontinuing or not adhering to aspirin among 50,279 patients at risk for coronary artery disease. European Heart Journal, 27(22), 2667-2674. https://doi.org/10.1093/eurheartj/ehl334

Gupta, A. K., Talukder, M., Williams, G., Abdelhamid, H., Akiska, Y. M., Alpeter, D., Boden, S. A., Erfan, R., Farjo, B., Farjo, N., Gabel, S., Harris, J. A., Hekimian, K. J., Keene, S., Krejci-Manwaring, J., Leonard, R. T., Nader, L. A., Pathomvanich, D., Perez-Meza, D., . . . Welter, R. J. (2026). Low-dose oral minoxidil (LDOM) and topical minoxidil: Consensus recommendations for managing male and female pattern hair loss in hair transplant patients using a modified Delphi process. Expert Opinion on Pharmacotherapy, 27(3), 253-261. https://doi.org/10.1080/14656566.2026.2642216

Hatfield, J., Saad, S., & Housewright, C. (2022). Dietary supplements and bleeding. Proceedings (Baylor University. Medical Center), 35(6), 802-807. https://doi.org/10.1080/08998280.2022.2121575

Kindel, T. L., Wang, A. Y., Wadhwa, A., Schulman, A. R., Sharaiha, R. Z., Kroh, M., Ghanem, O. M., Levy, S., Joshi, G. P., & LaMasters, T. (2025). Multi-society clinical practice guidance for the safe use of glucagon-like peptide-1 receptor agonists in the perioperative period. Surgical Endoscopy, 39(1), 180-183. https://doi.org/10.1007/s00464-024-11263-2

Leavitt, M., Perez-Meza, D., Rao, N. A., Barusco, M., Kaufman, K. D., & Ziering, C. (2005). Effects of finasteride (1 mg) on hair transplant. Dermatologic Surgery, 31(10), 1268-1276. https://doi.org/10.1111/j.1524-4725.2005.31202

National Health Service. (2024, September 9). Anticoagulant medicines. NHS. https://www.nhs.uk/medicines/anticoagulants/