A clinic quotes £250 for a three-area Botox treatment and treats two patients from one vial. Product cost feels like a rounding error. Then the vial is reconstituted on a Tuesday, one patient rebooks their top-up for the following week, and the remaining units go into the sharps bin because the 24-hour window has closed. That gap is invisible to most aesthetic clinics. What the Botox in that vial actually cost was never the figure on the invoice. It was the invoice divided by the units that reached a patient’s face.
Most menus get priced against the invoice figure and then quietly under-deliver on margin for years afterwards. This covers how toxin is priced at the supply end, what really drives the number you pay, and how to work forwards from it to a treatment fee that holds.
Why Botox Is Sold in Units, Not Volume
Botulinum toxin type A blocks acetylcholine release at the neuromuscular junction, which stops the treated muscle contracting and softens the dynamic lines it produces. It arrives as a sterile, vacuum-dried powder in a single-dose vial and is reconstituted with 0.9% sodium chloride immediately before use.
Because it’s dosed by biological activity rather than volume, everything about the cost of botox to a clinic runs off the unit, not the millilitre. Those units are brand-specific and not interchangeable. Twenty units of one toxin is not equivalent to twenty of another, which is why cross-brand price comparisons on a per-unit basis mislead unless you also compare typical dosing for the same indication.
Standard reconstitution for a 100-unit vial is 2.5ml of saline, giving 4 units per 0.1ml. Scale that proportionally for other presentations. Unopened vials store at 2 to 8 degrees Celsius. Once reconstituted, the Botox Summary of Product Characteristics specifies use within 24 hours with continued refrigeration, which is the single most important number in the economics below.
Botox 50 Units: The Small Vial and When It Earns Its Place
Botox 50 Units is the smallest presentation and it costs more per unit than the larger vials. That is not a reason to avoid it.
It makes sense in three situations. A clinic running low patient volume, where a larger vial would time out before it emptied. A practitioner building a single-area list, since 50 units covers roughly two glabellar treatments at 20 units each. And any session where the alternative is opening a 100-unit vial for one patient and binning the balance.
Reconstitute with 1.25ml saline to match the standard 4 units per 0.1ml concentration.
The arithmetic that matters: a smaller vial at a higher unit price with no waste beats a larger vial at a lower unit price with 40% waste. Work out your real cost per unit as vial price divided by units actually injected, not units purchased.
Botox 100 Units: The Standard Working Vial
Botox 100 Units is what most UK aesthetic clinics run on, and it’s the reference point for almost every pricing conversation in the sector.
Typical dosing against it: glabellar complex around 20 units, frontalis 10 to 20 depending on muscle bulk and brow position, lateral canthal lines 12 units per side. A full upper face therefore lands somewhere between 44 and 64 units. One vial covers one generous upper face with a top-up in reserve, or two conservative ones, or three to four single-area patients if they can be booked inside the same 24 hours.
That last clause is where clinics lose money without noticing. Two patients booked on consecutive days is two vials. Two patients booked on the same afternoon is one. Clustering toxin appointments into dedicated sessions is the highest-return scheduling change most small clinics can make, and it costs nothing to implement.
Botox 200 Units: High-Dose and Therapeutic Indications
Botox 200 Units is the high-strength presentation, used where the dose genuinely justifies it rather than as a default bulk buy.
Bilateral masseter work runs 25 to 50 units per side, so 50 to 100 units in a single patient. Axillary hyperhidrosis is 50 units per axilla under the licensed indication, giving 100 units for one treatment. Both empty a 100-unit vial in one sitting and make the larger presentation the sensible stock item.
Reconstitute with 5ml saline for the same working concentration. The lowest cost per unit in the range sits here, but only if the clinical caseload supports it. A 200-unit vial opened for a 20-unit glabellar treatment is the most expensive treatment in the building.
What Moves the Price You Pay
Volume is the big one. Pharmacies and clinics that prescribe regularly place larger, more frequent orders against anticipated named-patient demand, and manufacturer pricing is typically tiered accordingly — the step between an occasional small order and a regular higher-volume account is usually the steepest part of the curve. This isn’t stockpiling; product still can’t be held as general, undirected stock.
VAT sits on top of trade pricing and is frequently left out of comparisons, which makes two quotes look closer than they are. Compare inclusive figures or exclusive figures, never one of each.
The supply route matters. Buying through a registered UK pharmacy with an approved prescriber attached carries costs a grey-market seller doesn’t have: verified cold chain, batch traceability, MHRA-compliant storage and a paper trail if anything goes wrong.
Cold chain and delivery are real line items. Refrigerated shipping isn’t free, and next-day delivery on a temperature-controlled product costs more than standard post because it has to.
The prescriber requirement is the structural one. Botulinum toxin is a prescription-only medicine under the Human Medicines Regulations 2012, and it cannot be bought or held against a general order. It must be prescribed for a named patient by a doctor, dentist, or nurse or pharmacist prescriber, following a face-to-face consultation. Remote prescribing is no longer compliant. Any supplier offering to skip that step is offering you a regulatory problem with a vial attached. The full route is set out in how to buy Botox legally in the UK.
Because of that last point, a public botox price for a POM isn’t something a compliant pharmacy will publish on an open page. Live pricing sits behind practitioner verification, which is why comparing suppliers means logging in rather than reading a price list.
Turning Cost Per Unit Into a Treatment Fee
Work forwards from the vial, not backwards from what the clinic down the road charges.
Take your inclusive vial price. Divide by units realistically injected rather than units purchased, applying an honest waste assumption for your booking pattern. Add the consumables: needles, syringes, saline, gloves, sharps disposal. Add the prescriber’s time for the face-to-face consultation, which is a per-patient cost, not an overhead. Add chair time for the appointment and the two-week review if you include one.
That total is your floor. Everything above it pays for premises, insurance, indemnity, no-shows and your expertise.
Two structural choices follow. Per-area pricing absorbs dose variation, so patients with heavy frontalis muscles cost you more and patients with light ones cost you less, and it averages out across a list. Per-unit pricing passes the variation to the patient and protects your margin per treatment, but it creates a quiet pressure to stop at the patient’s budget rather than the correct dose. Whichever you choose, apply it consistently. Clinics that quote botox injection price per area for the upper face and per unit for the lower face confuse patients and end up discounting to resolve the confusion.
High-unit treatments need separate treatment on the menu. A masseter botox price built by applying the upper-face rate to the lower face will lose money on every case, because 50 to 100 units of product is two to four times an upper-face dose. Price masseter as its own line. The same applies to hyperhidrosis and any Nefertiti work.
One thing worth checking annually: whether your botox cost per treatment has moved while your menu hasn’t. Trade pricing, VAT and delivery all shift, and a menu set three years ago against a different vial price is quietly eroding.
Why Cheap Vials Are the Most Expensive Stock You Can Buy
The floor exists for a reason. A vial priced well below the normal distributor range is being subsidised by something, and the candidates are counterfeit product, parallel imports without UK labelling, or a cold chain nobody can evidence.
A botulism outbreak in England in 2025 was linked to unlicensed products and untrained injectors. The commercial exposure runs past the clinical one: no traceable batch means no defensible position with your insurer, your indemnity provider or a regulator.
There is also an advertising dimension practitioners routinely get wrong. Promoting a prescription-only medicine to the public breaches advertising rules, and a price against a brand name is the clearest form of it. Anyone building a treatment menu should read what you can and cannot say when advertising Botox in the UK before the menu goes on the website.
Check Your Live Pricing Before You Reprice Your Menu
Any figure in a blog post is stale the week after it publishes. Use find a prescriber to connect with a local prescriber who can assess your patients, then log into the Faces pharmacy marketplace to see current pricing across verified UK suppliers for Botox 50 Units, Botox 100 Units and Botox 200 Units. Compare inclusive of VAT and next-day delivery, and rebuild your treatment menu against the number you are actually paying this quarter rather than the one you were paying when you set it.
FAQs
How much for Botox in the UK?
Trade pricing varies by supplier, order volume, VAT treatment and delivery, and compliant pharmacies show it only to verified practitioners rather than publishing it openly. A useful rule for budgeting: work in cost per unit rather than cost per vial, and build in a waste assumption based on how tightly you cluster toxin appointments.
Is Botox cheaper than fillers?
Per treatment, toxin usually costs the clinic less in product than a syringe of dermal filler. The picture reverses on treatment frequency, since toxin patients return every three to four months while filler patients return at six to eighteen. Toxin is the lower cost of goods and the higher rebooking rate, which makes it the better retention product even at thinner per-treatment margin.
What works like Botox but is cheaper?
Other licensed botulinum toxin type A products, principally Azzalure and Bocouture, generally sit below Botox on trade price for equivalent indications. Dosing is not interchangeable between brands, so compare on cost per treatment at typical dosing rather than cost per unit. Anything marketed as a needle-free alternative does not block neuromuscular transmission and will not reproduce the effect.
How many treatments should one vial cover?
A 100-unit vial covers one full upper face with reserve, two conservative upper faces, or three to four single-area patients. The constraint is the 24-hour reconstituted window, not the unit count, so realised yield depends entirely on how you book. Clinics running dedicated toxin sessions extract close to full value from every vial; clinics treating one patient a day rarely do.
Can a non-prescriber hold stock?
No. Botulinum toxin cannot be bought or held against a general order. It must be prescribed for a named patient following a face-to-face assessment by a doctor, dentist, or nurse or pharmacist prescriber. Non-prescribing practitioners work by partnering with a designated prescriber who assesses each patient personally.