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Sleep, Calm & unwind
Tranquil
BKM Tranquil helps you get the deep, restorative sleep your body needs.
- Before sleep: Can help you fall asleep faster
- During sleep: Helps your body get restorative, deep sleep
- After sleep: Supports your body's recovery
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Magnesium Glycinate: Supports muscle relaxation and reduces tiredness and fatigue.
Ashwagandha: Traditionally used to help manage stress and promote relaxation.
GABA: A neurotransmitter that helps calm the nervous system and improve sleep quality.
Chamomile: Known for its calming effects and ability to promote relaxation.
L-Theanine: An amino acid that promotes relaxation without drowsiness.
Lemon Balm Powder: Traditionally used to reduce anxiety and promote sleep.
Zinc: Supports overall health and immune function.
Saffron Extract: Known for its potential to improve mood and enhance sleep quality.
L-Serine: Supports brain function and overall well-being.
Escolzia Powder: Traditionally used for its calming and sleep-promoting properties.
Vitamin B6: Supports energy production and overall health.
How to use?
Take 2 capsules in the evening, about 30-60 minutes before bedtime. Consistent use is recommended for the best results.
Food Supplement/Kosttillskott/Kosttillskudd
EN: 60 capsules, 30 doses/days
SE: 60 kapslar, 30 doser/dagar
Recommended daily dose/Rekommenderad daglig dos
EN: 2 capsules per day.
SE: 2 kapslar per dag.
Produkten bör inte användas som ersättning för en varierad kost. Den rekommenderade dagliga dosen bör inte överskridas. Förvaras oåtkomligt för små barn. Kosttillskott bör inte användas som ett alternativ till en balanserad och varierad kost samt en hälsosam livsstil.

Made in Sweden
Swedish quality standards.

GMP & HAACP certified
Tested for purity and safety.

Cologne List® certified
Tested for doping substances without any complaints.

Tired of sleeping for 8 hours and not having energy?
Up to 67% of people struggle with sleep.
Most miss out on deep, restorative rest.
BKM Tranquil includes ingredients designed to help you achieve deep and REM sleep, the sleep that makes you wake up energized.
11 active Ingredients
11 carefully selected ingredients, each chosen for their unique role in promoting deep, restorative sleep and helping your body unwind from daily stress.
Magnesium Glycinate
400 mgSupports immune function, bone health, and calcium absorption. Essential for overall wellness and mood regulation.
Clinical Trials:
- Magnesium supplementation beneficially affects depression in adults with depressive disorder: a systematic review and meta-analysis of randomized clinical trials" (Moabedi M, et al., 2023, PMID: 38817505)
- Oral magnesium supplementation for insomnia in older adults: a Systematic Review & Meta-Analysis (BMC Complementary Medicine and Therapies, 2021)
- Examining the Effects of Supplemental Magnesium on Self-Reported Anxiety and Sleep Quality: A Systematic Review" (Rawji A, et al., 2024, PMID: 38817505)
Ashwagandha
300 mgTraditionally used in Ayurvedic medicine, ashwagandha is known for its adaptogenic properties. It helps the body maintain balance during periods of emotional or physical stress.
Clinical Trials:
- Efficacy of Ashwagandha (Withania somnifera) in improving sleep quality among healthy adults: A systematic review and meta-analysis" (Cheah KL, et al., 2021, PMID: 34411883)
- An investigation into the stress-relieving and pharmacological actions of an ashwagandha (Withania somnifera) extract: A randomized, double-blind, placebo-controlled study (Lopresti AL, et al., 2019, PMID: 31517876)
- Effect of Ashwagandha (Withania somnifera) extract on sleep and stress in healthy elderly participants: A double-blind, randomized, placebo-controlled study (Kelgane SB, et al., 2020, PMID: 32930044)
GABA
200 mgGABA is a naturally occurring amino acid that functions as a neurotransmitter. It plays a role in the nervous system by contributing to a calm and relaxed state.
Clinical Trials:
- The effects of oral administration of gamma-aminobutyric acid (GABA) on improving sleep quality: a systematic review and meta-analysis (Hepsomali P, et al., 2023, PMID: 37855538)
- Effects of Oral Gamma-Aminobutyric Acid (GABA) Administration on Stress and Sleep in Humans: A Systematic Review (Hepsomali P, et al., 2020, PMID: 33203292)
- Relaxation and immunity enhancement effects of gamma-aminobutyric acid (GABA) administration in humans (Abdou AM, et al., 2006, PMID: 16971751)
Chamomile
200 mgChamomile has a long history of traditional use to support relaxation and well-being. It is often consumed before bedtime as part of a calming evening routine.
Clinical Trials:
- Preliminary examination of the efficacy and safety of a standardized chamomile extract for chronic primary insomnia: A randomized placebo-controlled pilot study (Zick SM, et al., 2011, PMID: 21939549)
- Effectiveness of Chamomile Tea on Sleep Quality in Elderly People: A Randomized Controlled Trial (Adib-Hajbaghery M, et al., 2017, PMID: 29122237)
- Long-term chamomile (Matricaria chamomilla L.) treatment for generalized anxiety disorder: A randomized clinical trial (Mao JJ, et al., 2016, PMID: 27912875)
L-theanine
150 mgL-theanine is an amino acid naturally found in green tea. It is known for its traditional use in promoting a calm and focused state without causing drowsiness.
Clinical Trials:
- L-theanine reduces stress and improves relaxation in healthy adults: A randomized, double-blind, placebo-controlled study (Hidese S, et al., 2019, PMID: 31623400)
- The effects of L-theanine supplementation on sleep quality in boys with ADHD: A randomized, double-blind, placebo-controlled clinical trial (Lyon MR, et al., 2011, PMID: 22214254)
- Anti-stress effect of theanine on students during pharmacy practice: A randomized controlled trial (Unno K, et al., 2013, PMID: 23458739)
Lemon balm powder
100mgLemon balm has been traditionally used to support relaxation and emotional well-being. Commonly included in calming herbal preparations.
Clinical Trials:
- Pilot trial of Melissa officinalis L. leaf extract in the treatment of volunteers suffering from mild-to-moderate anxiety disorders and sleep disturbances (Cases J, et al., 2011, PMID: 22433297)
- Attenuation of laboratory-induced stress in humans after acute administration of Melissa officinalis (Lemon Balm) (Kennedy DO, et al., 2004, PMID: 15272110)
- A combination of valerian and lemon balm is effective in the treatment of restlessness and dyssomnia in children (Müller SF, et al., 2006, PMID: 16444660)
Zinc
7.25 mgZinc contributes to the normal function of the immune system and helps protect cells from oxidative stress. It also plays a role in normal cognitive function.
Clinical Trials:
- Zinc supplementation improves sleep quality and reduces inflammatory markers in adults: a randomized controlled trial (Gholipour Baradari A, et al., 2018, PMID: 29981697)
- Zinc supplementation reduces anxiety and improves mood in young women: a randomized, double-blind, placebo-controlled study (Sawada T, et al., 2010, PMID: 20689416)
- Effects of zinc supplementation on sleep quality and duration in elderly individuals with poor sleep: a randomized controlled trial (Cherasse Y, et al., 2019, PMID: 31375243)
Saffron Extract
15 mgSaffron has a long tradition of use in herbal practices, particularly for emotional balance and general well-being. Its rich composition includes natural compounds studied for their calming properties.
L-Serine
5 mgL-serine is a non-essential amino acid that occurs naturally in the body. It plays a structural role in the formation of proteins and cell membranes.
Clinical Trials:
- L-serine metabolic regulation and host respiratory homeostasis (PMID: 40078876)
- L-serine synthesis via the phosphorylated pathway in humans (PMID: 32594192)
Escolzia powder
2.5 mgAlso known as California poppy, this plant has been traditionally used in herbal preparations to support relaxation and assist with sleep onset.
Clinical Trials:
- California poppy (Eschscholzia californica), the Papaveraceae golden girl model organism for evodevo and specialized metabolism (PMID: 36938015)
- Alkaloids in commercial preparations of California poppy - Quantification, intestinal permeability and microbiota interactions (PMID: 37673017)
Vitamin B6
2 mgVitamin B6 contributes to the normal functioning of the nervous system, helps reduce tiredness and fatigue, and supports normal psychological function.
Clinical Trials:
- Vitamin B6 in Health and Disease (PMID: 34579110)
Magnesium Glycinate
400 mgSupports immune function, bone health, and calcium absorption. Essential for overall wellness and mood regulation.
Clinical Trials:
- Magnesium supplementation beneficially affects depression in adults with depressive disorder: a systematic review and meta-analysis of randomized clinical trials" (Moabedi M, et al., 2023, PMID: 38817505)
- Oral magnesium supplementation for insomnia in older adults: a Systematic Review & Meta-Analysis (BMC Complementary Medicine and Therapies, 2021)
- Examining the Effects of Supplemental Magnesium on Self-Reported Anxiety and Sleep Quality: A Systematic Review" (Rawji A, et al., 2024, PMID: 38817505)
Ashwagandha
300 mgTraditionally used in Ayurvedic medicine, ashwagandha is known for its adaptogenic properties. It helps the body maintain balance during periods of emotional or physical stress.
Clinical Trials:
- Efficacy of Ashwagandha (Withania somnifera) in improving sleep quality among healthy adults: A systematic review and meta-analysis" (Cheah KL, et al., 2021, PMID: 34411883)
- An investigation into the stress-relieving and pharmacological actions of an ashwagandha (Withania somnifera) extract: A randomized, double-blind, placebo-controlled study (Lopresti AL, et al., 2019, PMID: 31517876)
- Effect of Ashwagandha (Withania somnifera) extract on sleep and stress in healthy elderly participants: A double-blind, randomized, placebo-controlled study (Kelgane SB, et al., 2020, PMID: 32930044)
GABA
200 mgGABA is a naturally occurring amino acid that functions as a neurotransmitter. It plays a role in the nervous system by contributing to a calm and relaxed state.
Clinical Trials:
- The effects of oral administration of gamma-aminobutyric acid (GABA) on improving sleep quality: a systematic review and meta-analysis (Hepsomali P, et al., 2023, PMID: 37855538)
- Effects of Oral Gamma-Aminobutyric Acid (GABA) Administration on Stress and Sleep in Humans: A Systematic Review (Hepsomali P, et al., 2020, PMID: 33203292)
- Relaxation and immunity enhancement effects of gamma-aminobutyric acid (GABA) administration in humans (Abdou AM, et al., 2006, PMID: 16971751)
Chamomile
200 mgChamomile has a long history of traditional use to support relaxation and well-being. It is often consumed before bedtime as part of a calming evening routine.
Clinical Trials:
- Preliminary examination of the efficacy and safety of a standardized chamomile extract for chronic primary insomnia: A randomized placebo-controlled pilot study (Zick SM, et al., 2011, PMID: 21939549)
- Effectiveness of Chamomile Tea on Sleep Quality in Elderly People: A Randomized Controlled Trial (Adib-Hajbaghery M, et al., 2017, PMID: 29122237)
- Long-term chamomile (Matricaria chamomilla L.) treatment for generalized anxiety disorder: A randomized clinical trial (Mao JJ, et al., 2016, PMID: 27912875)
L-theanine
150 mgL-theanine is an amino acid naturally found in green tea. It is known for its traditional use in promoting a calm and focused state without causing drowsiness.
Clinical Trials:
- L-theanine reduces stress and improves relaxation in healthy adults: A randomized, double-blind, placebo-controlled study (Hidese S, et al., 2019, PMID: 31623400)
- The effects of L-theanine supplementation on sleep quality in boys with ADHD: A randomized, double-blind, placebo-controlled clinical trial (Lyon MR, et al., 2011, PMID: 22214254)
- Anti-stress effect of theanine on students during pharmacy practice: A randomized controlled trial (Unno K, et al., 2013, PMID: 23458739)
Lemon balm powder
100mgLemon balm has been traditionally used to support relaxation and emotional well-being. Commonly included in calming herbal preparations.
Clinical Trials:
- Pilot trial of Melissa officinalis L. leaf extract in the treatment of volunteers suffering from mild-to-moderate anxiety disorders and sleep disturbances (Cases J, et al., 2011, PMID: 22433297)
- Attenuation of laboratory-induced stress in humans after acute administration of Melissa officinalis (Lemon Balm) (Kennedy DO, et al., 2004, PMID: 15272110)
- A combination of valerian and lemon balm is effective in the treatment of restlessness and dyssomnia in children (Müller SF, et al., 2006, PMID: 16444660)
Zinc
7.25 mgZinc contributes to the normal function of the immune system and helps protect cells from oxidative stress. It also plays a role in normal cognitive function.
Clinical Trials:
- Zinc supplementation improves sleep quality and reduces inflammatory markers in adults: a randomized controlled trial (Gholipour Baradari A, et al., 2018, PMID: 29981697)
- Zinc supplementation reduces anxiety and improves mood in young women: a randomized, double-blind, placebo-controlled study (Sawada T, et al., 2010, PMID: 20689416)
- Effects of zinc supplementation on sleep quality and duration in elderly individuals with poor sleep: a randomized controlled trial (Cherasse Y, et al., 2019, PMID: 31375243)
Saffron Extract
15 mgSaffron has a long tradition of use in herbal practices, particularly for emotional balance and general well-being. Its rich composition includes natural compounds studied for their calming properties.
L-Serine
5 mgL-serine is a non-essential amino acid that occurs naturally in the body. It plays a structural role in the formation of proteins and cell membranes.
Clinical Trials:
- L-serine metabolic regulation and host respiratory homeostasis (PMID: 40078876)
- L-serine synthesis via the phosphorylated pathway in humans (PMID: 32594192)
Escolzia powder
2.5 mgAlso known as California poppy, this plant has been traditionally used in herbal preparations to support relaxation and assist with sleep onset.
Clinical Trials:
- California poppy (Eschscholzia californica), the Papaveraceae golden girl model organism for evodevo and specialized metabolism (PMID: 36938015)
- Alkaloids in commercial preparations of California poppy - Quantification, intestinal permeability and microbiota interactions (PMID: 37673017)
Vitamin B6
2 mgVitamin B6 contributes to the normal functioning of the nervous system, helps reduce tiredness and fatigue, and supports normal psychological function.
Clinical Trials:
- Vitamin B6 in Health and Disease (PMID: 34579110)


Li boosted her sleep quality to an average of 99% using BKM Tranquil
We observed that Li Karlsén, Swedish freedive champion and co-founder of BKM, significantly improved her sleep quality with Tranquil. After using Tranquil, her sleep performance, as measured by the WHOOP health tracker, increased to an impressive average of 99%.
Try it for yourself, if you're not satisfied with the results, we’ll refund your money.*
Trusted by Professional Athletes

Tara Babulfath
Swedish Olympic Judoka

Marcus Sörensen
Hockey player, HC Fribourg-Gottéron & Swedish national team

Daniel Windahl
#1 padel, Northern Europe
Frequently Asked Questions
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Many users notice a difference within the first couple of days of use. However, some ingredients provide their best results when taken consistently over time. For optimal benefits, we recommend using Tranquil daily for at least 2 weeks.
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Yes, you can split the capsule. Simply open the capsule and mix the contents with your preferred food or beverage.
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These supplements often work well with medications but could sometimes cause interactions. It is important to consult with your healthcare provider before use.
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It is not recommended for children and pregnant or breastfeeding women to take this supplement. Please consult with your healthcare provider before use.
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No!
BKM Tranquil does not contain melatonin. We focus on promoting relaxation and improving the quality of sleep using natural ingredients -
Magnesium glycinate, Organic Ashwagandha (Withania somnifera - radix), GABA (Gamma Aminobutyric Acid), Chamomile (Chamaemelum nobile), L-theanine, Lemon balm powder (Melissa officinalis - folium), Zinc (Zinc Gluconate), Anticaking agent (silicon dioxide), Saffron extract (Crocus sativus), L-Serine, Escolzia Powder (Eschscholzia Californica) (hypromellose) , Emulsifier (magnesium stearate), Vitamin B6 (Pyridoxine hydrochloride), Vegetable capsule (hypromellose)