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The Healf Source
Healf Or Hype: The TikTok Trending Hot Lettuce Water
Written by: Pippa Thackeray
Written on: June 2, 2025
What the research says
Modern research on boiled lettuce water, as opposed to the more richly documented traditional use of wild lettuce in herbal medicine, is fairly weak. There are only a handful of animal studies, so disappointingly, they rarely involve humans drinking lettuce tea.
One study using lettuce extract in sedated mice showed slightly longer sleep duration, but it’s worth noting that the mice were already under the influence of a pharmaceutical-grade sleep-inducing drug. To add, the researchers also used concentrated lettuce extracts, not whole leaves steeped in water.
It’s also worth noting that the most commonly used type in these videos, iceberg lettuce, has not been recorded for a high lactucarium content. Romaine or wild lettuce would be more potent, but there’s still no direct evidence to support any meaningful effect from a 10-minute water infusion, as the viral TikToks recommend.
What people want vs what is proven
It would appear people want a quick fix, a convenient plaster to perhaps cover a total shambles of a bedtime routine or a stressful daily routine not conducive to sleep. But sadly, the evidence is not in favour of a quick 10-minute lettuce brew, however trendy it may be.
Shortcuts do appeal to the masses, especially in pop-culture videos like those on TikTok. But good sleep is rarely the result of a single, isolated tactic. Instead, it's something that’s built over time through consistent habits and an environment that supports rest.
A more reliable approach: consistent habits that support sleep
If you’re looking to improve how well you sleep (and stay asleep), these are the areas that matter:
- Stick to a regular sleep and wake time, even at weekends.
- Keep the bedroom cool, quiet and dark.
- Use a caffeine cut-off time that suits you and limit alcohol in the evening.
- Use melatonin-supporting devices like RA Optics glasses to reduce evening blue light exposure and Bon Charge Blue-Light Blocking Bulbs to protect your sleep space.
- Stop scrolling your socials before bed, especially TikTok, which some say is designed to keep the brain overstimulated (aka ‘Brain Rot’).
- Use a wind-down routine that signals rest, such as herbal tea, low light and gentle movement.
- Introduce herbal formulas or tools when appropriate , such as mouth tape or valerian tinctures, to support a consistent night-time rhythm.
Mouth taping: breathing better, sleeping better
Mouth taping is said to be a practical tool for people who want to support nasal breathing during sleep.
Put forward as an approach to support sleep apnoea, mouth taping may allow increased nasal breathing to maximise oxygen regulation, air filtration through the nose and for the promotion of a more restful state overnight.
Mouth taping encourages this by gently sealing the lips shut, guiding the body to default to the nose.
Who it’s for
This taping technique may help if you regularly wake with a dry mouth, suspect you snore, or regularly wake feeling unrested, despite an adequate amount of hours in bed. Breathwork specialists suggest many people are over reliant on breathing through the mouth, often without realising, especially under stress or when fatigued. For those without sleep apnoea, or nasal obstruction, taping can be a useful part of a considered sleep routine.
Products such as Hostage Tape Mouth Tape are specifically designed for this use, with soft edges, comfortable removal and other safety features.
Viral sleep trends: The takeaways
- Lettuce contains compounds that may promote sleep in high doses, but a mug of lettuce tea is somewhat unlikely to deliver ground-breaking results.
- Mouth taping supports nasal breathing, which is associated with better oxygen regulation and fewer nighttime disturbances.
However, neither technique can fully replace a great routine of sleep hygiene and a truly sleep-supportive daily routine, with adequate time built in to tackle the negative impacts of stress.
Therefore, it could be said that a methodical, consistent approach remains the most reliable way to achieve deeper, and optimally restorative sleep.
This article is for informational purposes only, even if and regardless of whether it features the advice of physicians and medical practitioners. This article is not, nor is it intended to be, a substitute for professional medical advice, diagnosis, or treatment and should never be relied upon for specific medical advice. The views expressed in this article are the views of the expert and do not necessarily represent the views of Healf
Pippa is a content writer and qualified Nutritional Therapist (DipNT) creating research-based content with a passion for many areas of wellbeing, including hormonal health, mental health and digestive health.
As a contributor to The Healf Source, she regularly attends seminars and programmes on a plethora of contemporary health issues and modern research insights with a drive to never stop learning. In addition, interviewing experts and specialists across The Four Pillars: EAT, MOVE, MIND, SLEEP.
In her spare time, she is an avid swimmer, mindfulness and yoga lover, occasionally bringing a raw, honest approach to the topics she faces. You may also discover some personal accounts of eye-opening wellbeing experiences amidst the reality of a disorientating, and often conflicting, modern wellbeing space.
