Back Pain: What the Pharmacy Can Actually Offer, and Where It Stops

Reviewed July 26, 2026 by Sara, licensed pharmacist. This article is general education, not personal medical advice.

Someone comes to the counter with back pain roughly every day. The request is usually for “something strong”. The honest answer is that the pharmacy’s contribution here is smaller than people expect and more useful than they expect — because most of it is deciding what is not suitable for the person standing there, and recognising the small number who should be somewhere else entirely.

What I check before anything else

There is a short list of symptoms where the answer is not a medicine. I would rather over-explain them than have someone treat them at home.

Go to A&E the same day — these can indicate cauda equina syndrome, where nerve compression at the base of the spine becomes an emergency within hours:

numbness or altered sensation around the genitals, buttocks or inner thighs (the area that would touch a saddle)
difficulty starting or feeling the passage of urine, or any loss of bladder or bowel control
weakness, numbness or pain affecting both legs
new sexual dysfunction alongside back symptoms

Get assessed promptly, not with a painkiller — for significant trauma, a history of cancer, unexplained weight loss, fever or feeling systemically unwell, night pain that wakes you, progressive leg weakness, long-term steroid use, known osteoporosis, or a first episode in someone over about 50 or under 20.

Everything below is about ordinary mechanical back pain, once those are excluded.

The paracetamol question

This is the one that surprises people, and it is worth being clear about because the advice genuinely changed.

For acute low back pain specifically, paracetamol on its own does not perform well. A large randomised trial published in the Lancet in 2014 found it no better than placebo for time to recovery, and NICE guidance since 2016 recommends not offering paracetamol alone for low back pain. That is a narrow finding about this one condition — paracetamol remains a good and safe analgesic in plenty of other situations — but it is why “just take paracetamol” is not the answer here.

Oral NSAIDs — ibuprofen, naproxen, ketoprofen, diclofenac — are the option with better evidence for this problem, at the lowest effective dose for the shortest time. The benefit is modest. It is real, but nobody should expect the pain to disappear.

Whether an NSAID suits you

This is the actual pharmacist task, and it is why the same product is a reasonable suggestion for one person and a bad idea for the next. The things that change the answer:

What I ask about	Why it matters
Stomach ulcers, reflux, previous GI bleed	NSAIDs raise the risk of gastrointestinal bleeding; gastroprotection may be needed
Kidney disease, dehydration, diuretics	NSAIDs reduce renal blood flow — the “triple whammy” with an ACE inhibitor or ARB plus a diuretic is a well-known cause of acute kidney injury
Heart failure, hypertension, cardiovascular disease	NSAIDs cause fluid retention and raise blood pressure
Anticoagulants, antiplatelets	Bleeding risk
Asthma	A minority of people with asthma get bronchospasm with NSAIDs
Pregnancy	NSAIDs are avoided, particularly in the third trimester
Age, and other medicines	Risk accumulates rather than adding up neatly
Other boxes already at home	The commonest real-world problem: two products containing the same NSAID, or an NSAID already prescribed

If several of those apply, the pharmacy’s answer may be that nothing on the shelf is appropriate and the question belongs to a doctor. That is a useful outcome, not a failed sale.

Topical NSAIDs are gentler systemically and reasonable to try, though the evidence supporting them is stronger for peripheral joints — knees, hands — than for the back. Heat — a wheat bag, a hot water bottle, a heat patch — has modest evidence for acute low back pain and no interactions with anything, which makes it the first thing I would suggest to almost everyone.

What I would not encourage: opioids. Guidelines advise against them for chronic low back pain and against routine use in acute episodes, because the benefit is small and the harms are not.

The advice that outperforms the medicines

The strongest recommendation in the guidelines is not pharmacological.

Keep moving. Bed rest was standard advice decades ago and was abandoned because it makes outcomes worse. Stay as active as the pain permits, keep walking, return to normal activity — including work — as early as you can manage rather than as late as the pain allows.

Expect a timeline. Most acute episodes improve substantially within a few weeks. Knowing that changes how the first painful days feel, and it is why the medicine only has to make movement possible rather than make the pain vanish.

Then exercise, once the acute phase passes. Structured exercise is the intervention with the best evidence for preventing recurrence — and the type matters much less than doing it. Physiotherapy is worth asking for if episodes keep returning.

The things people expect to hear about — the perfect chair, the perfect mattress, posture — matter far less than staying active. Sitting differently is not a treatment; sitting for less time is closer to one.

When to go back

Book an assessment if pain is not improving after about six weeks, if it keeps recurring, if it radiates down a leg past the knee with numbness or tingling, or if you are taking anti-inflammatories for more than a few days without a plan. That last one is worth saying plainly: repeat NSAID purchases over weeks are a signal, and the pharmacy is where that signal is most likely to be noticed.

In Italy, the medico di base is the right first step for persistent pain, and continuità assistenziale for something that starts out of hours. For the emergency symptoms at the top of this article, 112 or the pronto soccorso — not a phone consultation, and not tomorrow.

Frequently asked questions

Is paracetamol good for back pain?

For acute low back pain specifically, the evidence is poor: a large randomised trial found it no better than placebo, and NICE guidance recommends against offering paracetamol on its own. It may still be the right choice for someone who cannot take an anti-inflammatory.

Should I rest in bed?

No. Staying as active as the pain allows, and returning to normal activity early, is associated with better outcomes than bed rest, which tends to prolong the episode.

Which symptoms mean I should not go to the pharmacy first?

Numbness around the genitals or inner thighs, difficulty passing urine or loss of bladder or bowel control, or weakness in both legs. These need emergency assessment the same day, not painkillers.

How long should back pain take to improve?

Most acute episodes improve substantially within a few weeks. Pain that is not improving after about six weeks, or that keeps returning, is a reason to be assessed rather than to keep buying medicines.