The rejection by Anvisa — Brazil’s health regulator — this week of the first generic application following the expiry of semaglutide’s patent in March shows that market opening will not be immediate, but is ultimately only a matter of time. The pipeline is in place: at least 16 applications are under review, and new products are expected to reach the market at lower price points sooner or later.
Demand, however, is already meaningful. A recent survey by McKinsey & Company suggests around 10% of Brazilians currently use weight-loss pens, while roughly 22% have used them over the past 12 months. For a high-ticket product, that points to a category already moving beyond niche.
The more revealing detail lies in income. Adoption is not confined to high earners. Penetration is significant among consumers with monthly income between R$10,000 and R$20,000, implying real trade-offs — households reallocating spending to fund a treatment that can cost up to R$3,000 per month. And not for clinical necessity. Most users are seeking rapid weight loss, appetite control or weight maintenance. The product functions less as therapy and more as an aspirational tool.
The effects are already visible in consumption patterns. Users report sharp reductions in alcohol (-55%), snacks (-57%), soft drinks (-33%), cigarettes (-37%) and eating out (-40%) — categories typically associated with impulse consumption.
The impact is not purely contractionary, but redistributive: less indulgence, more control. Spending is shifting toward wellness, health and beauty — including vitamins, protein supplements, fitness equipment, personal care and aesthetic treatments. Protein, in particular, stands out, with reported growth of 37%.
For retailers and consumer companies, this creates a paradox. Volumes may decline, but average ticket sizes can rise through premiumisation. The key question is elasticity — whether fewer consumption occasions can be offset by higher value per unit.
Nor is usage continuous. More than half of users remain on treatment for just two to five months — enough to reach a defined goal. The main reason for discontinuation is success itself, as users achieve weight loss.
This alters the market logic. Instead of steady recurrence, there are cycles of entry and exit. Some behavioural shifts, however, appear to persist: lower alcohol consumption, reduced snacking and greater dietary discipline.
In the end, these pens do not just generate revenue — they reshape behaviour. And in doing so, they change the game.
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