There is no single best medication for a concussion. Concussions produce a cluster of symptoms, including headaches, nausea, sleep problems, and mood changes, and each one calls for a different approach. Most people recover with rest, gradual return to activity, and short-term use of common over-the-counter pain relievers. When symptoms persist beyond a few weeks, prescription options can help target whatever is lingering.
Pain Relief in the First 48 Hours
Acetaminophen (Tylenol) is the safest first choice for headache pain immediately after a concussion. It doesn’t thin the blood, which matters because in the earliest hours after a head injury there’s a small risk of bleeding inside the skull. Ibuprofen and aspirin can increase that risk, so most guidelines recommend avoiding them for the first 48 hours.
After that initial two-day window, ibuprofen becomes an option alongside acetaminophen. Both work well for post-concussion headaches, and you can alternate between them if one alone isn’t enough. The important rule with all of these is frequency: use them no more than twice a week. Taking pain relievers more often than that can trigger rebound headaches, sometimes called medication-overuse headaches, which feel a lot like the concussion headache you’re trying to treat and make the whole picture harder to sort out.
Opioid painkillers are not appropriate for concussions. If pain is severe enough to need something stronger than over-the-counter options, that’s a signal the injury may be more serious than a mild concussion, potentially a skull fracture or intracranial bleeding, and needs further evaluation.
Managing Nausea and Dizziness
Nausea is one of the most disruptive early symptoms, and it often goes undertreated because people assume they just have to ride it out. Anti-nausea medication (ondansetron is the most commonly used) is safe after a concussion and can make the first few days significantly more manageable. In one pediatric study, children who received anti-nausea treatment in the emergency department were about half as likely to return within 72 hours compared to those who didn’t.
Some providers hesitate to prescribe anti-nausea medication because vomiting can be a warning sign of a more serious brain injury. But research shows that treating nausea does not mask dangerous conditions or lead to missed diagnoses, even in patients who didn’t have a CT scan.
Sleep Medications After a Concussion
Sleep disruption is extremely common after a concussion. You might have trouble falling asleep, wake up repeatedly, or find your sleep schedule has shifted later than normal. Good sleep is one of the most important factors in concussion recovery, so addressing this early matters.
Melatonin is the most widely recommended option. A typical dose is 3 mg taken 60 to 90 minutes before bedtime. The effective range runs from 0.5 mg up to 5 mg for adults, and 3 to 9 mg for children, so starting low and adjusting makes sense. Look for products labeled “high quality” or “pharmaceutical grade,” since melatonin is a supplement and actual content can vary significantly between brands. For children, guidelines from Children’s Hospital Colorado recommend doses up to 9 mg nightly when needed.
If your sleep-wake cycle has shifted (you can’t fall asleep until very late and then can’t wake up in the morning), melatonin taken one to two hours before your target bedtime can help reset that rhythm gradually.
When Headaches Don’t Go Away
Most concussion headaches resolve within two to four weeks. When they don’t, doctors often shift from as-needed pain relievers to a preventive approach. Amitriptyline, a low-dose antidepressant, is one of the most common first-line options for preventing post-traumatic headaches. It’s typically started at 10 mg in the evening, increased to 25 mg in the second week, and can go up to 50 mg by the third week. These doses are far lower than what’s used for depression. The medication works by changing how pain signals are processed, and it has the added benefit of improving sleep.
Side effects like drowsiness and dry mouth are possible, and the dose can be cut back if they become bothersome. Most people tolerate it well at these low doses. It takes a few weeks of consistent use to see the full effect on headache frequency.
Medications for Cognitive and Mood Symptoms
Some people recover physically from a concussion but struggle with focus, mental processing speed, or motivation for weeks or months afterward. Amantadine is a medication originally developed for other conditions that has shown real benefits for these cognitive symptoms after brain injuries. Studies have documented improvements in attention, concentration, processing speed, and the ability to initiate tasks.
Effects typically appear within several days of starting treatment. Side effects are generally mild and dose-dependent, meaning they tend to resolve if the dose is lowered. The most common issues include feeling overstimulated, irritability, or trouble sleeping. It’s not a first-line treatment for everyone, but for people whose recovery has stalled, particularly those dealing with brain fog or low motivation, it can help break through a plateau.
Medications to Avoid
Several common medications can interfere with concussion recovery or create unnecessary risks:
- Aspirin and ibuprofen in the first 48 hours. Their blood-thinning properties could worsen any undetected bleeding.
- Opioid painkillers. They cloud cognition, increase drowsiness, and carry dependency risk. Severe pain after a head injury warrants imaging, not stronger painkillers.
- Over-the-counter sleep aids containing diphenhydramine (Benadryl, ZzzQuil). These have anticholinergic effects that can worsen cognitive symptoms and brain fog.
- Any pain reliever used more than twice a week. This applies to acetaminophen and ibuprofen alike. Overuse creates a cycle of rebound headaches that prolongs recovery.
What Recovery Looks Like With Medication
Medication plays a supporting role in concussion recovery, not the lead. The foundation is still a brief period of relative rest (one to two days), followed by a gradual return to light activity, school, or work as tolerated. Adequate sleep, hydration, and avoiding alcohol matter more than any pill.
Most concussions resolve within two to four weeks with or without medication. Medication helps manage symptoms during that window so you can sleep, function, and stay active enough to support healing. If symptoms persist beyond four weeks, that’s when working with a provider to build a more targeted medication plan, potentially including preventive headache treatment or cognitive support, becomes worthwhile. The “best” medication for your concussion depends entirely on which symptoms are affecting your daily life the most.