The relaxation beverage category is expanding rapidly, fueled by rising stress levels, increased interest in functional ingredients, and a shift away from alcohol. For product developers, however, this category presents a distinct challenge: delivering a sensory experience that aligns with “calm” while working with some of the most difficult-to-mask ingredients in the functional space.

At a glance, formulation challenges might seem similar to those in energy drinks or fortified beverages. But relaxation beverages operate under a different set of constraints — ones that require a more nuanced approach to flavor system design, ingredient pairing, and overall product architecture.

A different kind of masking challenge

In many functional categories, masking is largely about suppression. Bitter, metallic or astringent notes from caffeine, vitamins or proteins are often covered with bold, high-impact flavors — citrus, tropical fruit or confectionery-inspired profiles — supported by sweetness and acidity.

Relaxation beverages don’t have that same flexibility.

The ingredients commonly used to promote calm — such as ashwagandha, valerian root, magnesium, l-theanine and reishi — introduce a broader and more complex range of off-notes. These can include earthy, woody, sulfurous or savory characteristics, along with lingering bitterness or drying sensations. Some ingredients also contribute strong or polarizing aromas that are difficult to neutralize.

At the same time, the intended consumption occasion is fundamentally different. Consumers are not looking for a bold or stimulating sensory experience — they expect something soft, rounded and easy to drink. Flavor becomes part of the product’s emotional signal, reinforcing cues of calm, comfort and familiarity.

This creates a core tension in formulation:

•    The ingredient system often requires aggressive masking 

•    The sensory target requires restraint 

Balancing those two forces is what makes relaxation beverages uniquely complex.

Breaking down the masking challenge

One of the reasons relaxation beverages are particularly difficult to formulate is that their off-notes are not uniform — and they don’t behave consistently across systems.

Several common challenges include:

•    Lingering bitterness and temporal build: Ingredients such as ashwagandha and certain botanical extracts don’t just present upfront bitterness — they can build over time and linger on the palate. This makes them more difficult to manage than ingredients with sharp, immediate bitterness that can be offset more easily with sweetness or acidity. 

•    Earthy and savory notes: Adaptogens and functional mushrooms like reishi can introduce earthy, root-like, or umami-adjacent characteristics. These fall outside the traditional sweet–sour balance of beverages, making them harder to integrate into conventional flavor systems. 

•    Metallic and drying sensations: Minerals such as magnesium can create metallic or astringent mouthfeel, particularly in higher-use scenarios or reduced-sugar formulations. These sensations are not purely flavor-driven and cannot be fully addressed through flavor alone. 

•    Aromatic intensity and volatility: Certain botanicals, including valerian, contribute strong and sometimes polarizing aromas. Managing these requires careful coordination between aroma, flavor and overall profile design. 

•    Cannabinoid-related bitterness and mouthfeel: In markets where THC-infused beverages are permitted, cannabinoids introduce additional formulation challenges, including pronounced bitterness and a distinct herbal character. Emulsified delivery systems also can impact mouthfeel and flavor release, requiring further adjustment to the overall flavor system to maintain balance and drinkability.

These challenges are further shaped by the broader formulation matrix:

•    Lower sugar levels reduce the ability to round and suppress off-notes 

•    pH can amplify or soften bitterness depending on the system 

•    Carbonation can increase the perception of acidity and dryness 

•    Shelf life can shift flavor balance, particularly in botanical-heavy systems 

As a result, masking in relaxation beverages is rarely solved through a single intervention. It requires coordinating multiple formulation levers — flavor, sweetness system, acid profile and format — to achieve a balanced and stable product.

Flavor systems that are working

Recent product launches and global innovation data point to a consistent pattern: successful relaxation beverages rely on familiar flavor bases layered with subtle botanical or functional complexity.

Several approaches have emerged as particularly effective:

Fruit–Floral Combinations: Pairing recognizable fruit flavors with calming botanicals is one of the most widely adopted strategies. Citrus (orange, lemon), berry, or stone fruit profiles provide familiarity and structure, while ingredients like chamomile, lavender or elderflower contribute a soft, calming dimension. This approach helps position botanical notes as intentional rather than something to be masked.

Tea and Herbal Infusions: Herbal, caffeine-free tea systems remain a natural fit for relaxation beverages, largely due to their strong association with existing calming rituals. Ingredients such as chamomile, lemon balm and lavender are already familiar in this context, which can help reduce perceived risk when introducing functional ingredients. From a formulation standpoint, these systems also provide a more forgiving base, where subtle bitterness or botanical notes can feel more integrated rather than out of place. Light additions such as vanilla or soft fruit notes can further round the profile without disrupting the overall expectation of calm.

Botanical-Citrus Pairings: In ready-to-drink formats, botanicals are often paired with citrus or berry notes to balance bitterness and add lift. The key is moderation — using brightness to enhance drinkability without shifting the profile into a more energizing or aggressive space.

Indulgent and Dessert-Inspired Profiles: Chocolate, Caramel and other dessert-inspired flavors are increasingly used to deliver calming ingredients such as ashwagandha or reishi. These formats work because indulgence and relaxation are already closely linked in the consumer mindset.

Across these approaches, the pattern is consistent ― familiarity builds trust, while subtle complexity supports function.

The Role of Botanicals and Functional Ingredients

A relatively consistent set of ingredients appears across relaxation beverages — but the formulation challenge is less about any single ingredient and more about how they interact within the system.

Chamomile, lemon balm and lavender are often considered more approachable from a sensory standpoint, but even these can quickly become perfumy or soapy if not carefully balanced within the overall profile. In contrast, ingredients such as valerian, ashwagandha and reishi introduce more assertive earthy, bitter or aromatic characteristics that can dominate if not properly integrated.

Minerals such as magnesium add another layer of complexity, contributing to mouthfeel challenges like dryness or metallic perception — factors that must be addressed beyond flavor alone.

Importantly, these ingredients are rarely used in isolation. As formulations increasingly combine multiple botanicals, adaptogens and functional components, their sensory impacts can compound in unpredictable ways — amplifying bitterness, extending linger or distorting aroma.

As a result, successful formulation in this space depends on taking a systems-level approach: evaluating how ingredients interact with one another and designing flavor profiles that account for both individual and combined effects, rather than attempting to solve for each component independently.

Consumer Expectations Continue to Evolve

Formulation complexity is compounded by shifting consumer expectations around relaxation beverages.

Consumers are not only seeking stress relief, but also sleep support, mood enhancement and overall emotional balance. As a result, many products combine multiple functional ingredients and claims, increasing the likelihood of compounded off-notes.

At the same time, expectations around flavor remain high. Claims such as “promotes relaxation,” “supports sleep” and “calms the mind” are common, but they must be supported by a sensory experience that feels credible. A mismatch between positioning and flavor can quickly undermine consumer trust.

There also is growing interest in non-alcoholic alternatives for unwinding, particularly among consumers reducing alcohol intake for health or lifestyle reasons. In these cases, flavor plays an even more critical role in replicating the ritual and satisfaction typically associated with alcoholic beverages.

The GLP-1 Effect: Emerging Formulation Implications

The rise of GLP-1 medications is introducing new considerations for beverage developers, particularly in functional and relaxation categories.

Consumers using these medications often have reduced appetite and lower overall consumption, increasing interest in smaller-format, more functional beverages. This creates additional formulation pressure, as flavor systems must perform in more concentrated formats where off-notes are less diluted.

Hydration also becomes more important, opening the door for products that combine calming botanicals with electrolytes or light nutritional support. However, this further complicates flavor design, as additional functional ingredients can introduce new sensory challenges.

At the same time, these consumers tend to prioritize clean labels and ingredient transparency, limiting the use of certain masking strategies and reinforcing the need for more thoughtful flavor system design.

Designing for calm requires a different approach

Ultimately, successful formulation in this category requires a shift in mindset.

Instead of asking, “How do we mask this ingredient?” a more effective approach is to ask, “What flavor system makes this ingredient feel intentional?”

That often involves:

•    Building from familiar, trusted flavor bases 

•    Layering functional notes subtly rather than aggressively suppressing them 

•    Managing intensity across sweetness, acidity, and aroma 

•    Aligning flavor with consumption occasion and emotional expectation 

•    Designing the full system — ingredients, format, and flavor — together 

As the category continues to evolve, the most successful products will be those that treat flavor not as a secondary consideration, but as a central component of delivering on the promise of relaxation.