Medication
schedule.
Build a clear, printable medication schedule for your recovery. Tick doses off as you take them. Includes paracetamol safety tracking and opioid-constipation reminders.
Post-op medication schedules are one of the most common places recovery goes wrong. Discharge paperwork is small-print, patients are still recovering from anaesthetic, and multi-medication regimens are easy to muddle. This tool exists to replace that paperwork with something clearer.
Your data stays on your device. Nothing is sent to any server. If you clear your browser or use another device, you will need to set the schedule up again.
Three safety features are built in: a running paracetamol tally (alerts if you exceed 4g in 24 hours, the adult maximum), an opioid-constipation reminder (prompts you to add a laxative if you’re taking oxycodone, tramadol or codeine without one), and a food-pairing reminder for ibuprofen.
Content is compiled from NHS, healthdirect Australia, and NICE clinical guidance. Full sources at postopcare.info/sources.
Medication management in post-operative recovery
Correct medication timing is one of the most important (and most commonly mishandled) aspects of recovery at home. Taking analgesia “when needed” rather than on a schedule is a common cause of preventable pain escalation. NICE guidance recommends scheduled, not PRN (as needed), analgesia for the first 48–72 hours after most surgical procedures. Source: NICE NG180: post-operative pain management
Paracetamol (acetaminophen) safety. Paracetamol is the safest and most commonly prescribed first-line post-surgical analgesic. The maximum adult dose is 1g (two standard 500mg tablets) every 4–6 hours, with a maximum of 4g in any 24-hour period. Do not exceed this dose. Many people accidentally double-dose because paracetamol is an ingredient in many combination medications (such as co-codamol, Panadeine, and cold remedies). Check all medications before combining. Source: NHS: paracetamol
Opioid medications and constipation. Opioids (codeine, oxycodone, tramadol, morphine) cause constipation in the majority of patients. This is predictable and preventable. Laxatives (typically senna and/or lactulose) are routinely co-prescribed with opioids in hospital and should be continued at home while opioid use continues. Straining at stool after abdominal, pelvic, or hernia surgery can cause wound complications. Source: NHS: constipation guidance
Anticoagulants. If you have been prescribed blood-thinning injections (enoxaparin, dalteparin) for DVT prevention, these should be given at the same time each day at the site recommended by your nurse. Do not miss doses. If you are also prescribed antiplatelet medication (aspirin, clopidogrel), confirm with your pharmacist before stopping or starting any other medication. Source: NICE NG89: VTE prevention
Managing Medications Safely After Surgery
Post-operative medication management is one of the areas where patients most commonly run into difficulty at home. Timing doses correctly, understanding which medications can be taken together, knowing when to step down from stronger analgesics, and not stopping important preventive medications early, all of these matter for a smooth recovery. This guide is compiled from NHS and healthdirect.gov.au medication guidance, NICE analgesic ladder recommendations, and published post-operative care guidance.
Why Timing Matters
For pain medication, regular dosing is more effective than waiting until pain becomes severe. The underlying principle is that it is easier to maintain a manageable pain level than to bring severe pain under control once it has escalated. Paracetamol taken at regular intervals (typically 4–6 hourly depending on formulation) maintains a more stable analgesic effect than taking it only when needed. NSAIDs similarly work best when taken with food at regular intervals within the prescribed daily limits.
Common Post-Operative Medications and Their Purpose
Paracetamol (acetaminophen): First-line analgesic for most post-operative pain. Maximum dose for adults is typically 4g per day (1g every 6 hours, or 500mg every 4 hours). Important: paracetamol is an ingredient in many combination products — check labels of any other medications you take to avoid exceeding safe limits. Do not take if you have significant liver disease without specific medical advice.
NSAIDs (ibuprofen, naproxen, celecoxib, diclofenac): Anti-inflammatory analgesics effective for surgical pain. Always take with food to reduce the risk of gastric irritation. Avoid if you have peptic ulcer disease, kidney disease, or are taking blood thinners unless specifically prescribed. Ibuprofen should not be taken by people with asthma who are NSAID-sensitive.
Opioids (codeine, tramadol, oxycodone, morphine): Reserved for moderate-to-severe post-operative pain. Take exactly as prescribed. Do not drive or operate machinery while taking opioids. Common side effects include constipation (take a laxative concurrently if prescribed more than 3 days of opioids), nausea (usually settles after 2–3 days), drowsiness, and itching. Aim to step down opioids as pain improves: most patients can transition to paracetamol and NSAIDs alone within the first 1–2 weeks.
Blood thinners / anticoagulants (enoxaparin injections, rivaroxaban, apixaban): Prescribed to prevent DVT after higher-risk surgery. These must be taken exactly as directed and must not be stopped early without your surgeon's instruction. Missing doses increases DVT risk. Report any unusual bruising, blood in urine, or prolonged bleeding from cuts.
Antibiotics: If prescribed for a specific infection or as post-operative prophylaxis, complete the full course even if you feel better. Do not stop early — this risks treatment failure and antibiotic resistance.
Medications to Avoid or Use Carefully After Surgery
Some medications require caution in the post-operative period. Aspirin (even low-dose) increases bleeding risk and should only be taken if specifically prescribed after surgery — discuss with your surgeon before restarting if you normally take it. Blood pressure medications may sometimes need adjustment after surgery if blood pressure is running lower than usual. Herbal supplements: including fish oil, garlic, ginkgo, and St John's Wort: can affect bleeding or anaesthetic medications; discuss resumption with your surgeon. Oral contraceptive pills increase DVT risk; your surgeon should have advised you about this before surgery.
Constipation: The Overlooked Post-Operative Problem
Opioid-induced constipation affects the majority of patients taking opioid pain relief after surgery. It is uncomfortable and sometimes painful, and straining can put stress on abdominal wounds. Prevention is much easier than treatment: if you are prescribed more than 2–3 days of opioids, ask for a concurrent laxative (typically docusate and senna, or lactulose). Maintain adequate fluid intake. Eat foods containing dietary fibre. Walk as tolerated: movement stimulates bowel function. If you have not had a bowel movement within 3 days of returning home, contact your GP or surgical team.
Sources: NHS: Medications after surgery · NICE analgesic ladder · healthdirect.gov.au · TGA (Therapeutic Goods Administration, Australia)