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82 Reviews
One Week Flat - Prebiotic & Probiotic
Discover Optibac’s One Week Flat—your easy daily routine for gut balance.
Free delivery on subscriptions
Free sample each month
Pause or cancel anytime
365 day free returns
In stock. Next day delivery available.
Healf Zone members get free next day delivery on all orders.
Buy now, pay later from £5.75/mo
Key Benefits
- Designed to complement your natural gut bacteria
- Contains 5 billion live cultures plus 0.3g prebiotic FOS per sachet
- Simple, gentle support for your daily wellbeing
Start your week with confidence. Optibac One Week Flat brings together four carefully selected live cultures and prebiotic FOS in convenient daily sachets—perfect for those looking to support their gut flora as part of a balanced lifestyle.
At healf, every product is handpicked through our three-step process: Discovery, Expert Validation, and Community Testing. So you can trust you’re choosing with confidence.
Optibac specialises in strain-specific probiotics, each formula meticulously crafted with clinically backed, targeted bacterial strains. Their products address a range of health concerns, from gut permeability and immune modulation to hormone regulation and mental wellbeing via the gut-brain axis. Unlike broad-spectrum blends, Optibac focuses on precise combinations, validated by research and stability-tested for effectiveness through digestion. This approach ensures that every supplement offers deep, scientifically rigorous care for your microbiome, supporting optimal health from the inside out.
With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.
Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.
Prebiotic FOS (Fructooligosaccharides 0.3g); Probiotic blend: Bifidobacterium bifidum Rosell-71, Lactobacillus casei Rosell-215, Lactococcus lactis Rosell-1058 and Lactobacillus acidophilus/helveticus Rosell-52; maltodextrin
Suitable from 4 years+ with the following recommendations: Take 1 sachet daily for 7 consecutive days, or as frequently as desired, preferably with breakfast.
Additional Information:
Food supplements and foods sold by Healf should not be used as a substitute for a varied, balanced diet and healthy lifestyle.
If you are pregnant, breastfeeding, have a medical condition, or are taking any medications, please consult with a healthcare professional before use. Use products only if the seal is intact. Store in a cool, dry place, out of the reach of young children. Do not exceed the recommended daily intake.
We make every effort to ensure that product information on our website is accurate and up to date, but packaging and ingredients may occasionally vary from images shown on site. Please refer to the product label and contact Healf before use if you have any questions regarding your specific allergies or intolerances.
82 Reviews
One Week Flat - Prebiotic & Probiotic
Discover Optibac’s One Week Flat—your easy daily routine for gut balance.
Free delivery on subscriptions
Free sample each month
Pause or cancel anytime
365 day free returns
In stock. Next day delivery available.
Healf Zone members get free next day delivery on all orders.
Buy now, pay later from £5.75/mo
Key Benefits
- Designed to complement your natural gut bacteria
- Contains 5 billion live cultures plus 0.3g prebiotic FOS per sachet
- Simple, gentle support for your daily wellbeing
Start your week with confidence. Optibac One Week Flat brings together four carefully selected live cultures and prebiotic FOS in convenient daily sachets—perfect for those looking to support their gut flora as part of a balanced lifestyle.
At healf, every product is handpicked through our three-step process: Discovery, Expert Validation, and Community Testing. So you can trust you’re choosing with confidence.
Optibac specialises in strain-specific probiotics, each formula meticulously crafted with clinically backed, targeted bacterial strains. Their products address a range of health concerns, from gut permeability and immune modulation to hormone regulation and mental wellbeing via the gut-brain axis. Unlike broad-spectrum blends, Optibac focuses on precise combinations, validated by research and stability-tested for effectiveness through digestion. This approach ensures that every supplement offers deep, scientifically rigorous care for your microbiome, supporting optimal health from the inside out.
With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.
Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.
Prebiotic FOS (Fructooligosaccharides 0.3g); Probiotic blend: Bifidobacterium bifidum Rosell-71, Lactobacillus casei Rosell-215, Lactococcus lactis Rosell-1058 and Lactobacillus acidophilus/helveticus Rosell-52; maltodextrin
Suitable from 4 years+ with the following recommendations: Take 1 sachet daily for 7 consecutive days, or as frequently as desired, preferably with breakfast.
Additional Information:
Food supplements and foods sold by Healf should not be used as a substitute for a varied, balanced diet and healthy lifestyle.
If you are pregnant, breastfeeding, have a medical condition, or are taking any medications, please consult with a healthcare professional before use. Use products only if the seal is intact. Store in a cool, dry place, out of the reach of young children. Do not exceed the recommended daily intake.
We make every effort to ensure that product information on our website is accurate and up to date, but packaging and ingredients may occasionally vary from images shown on site. Please refer to the product label and contact Healf before use if you have any questions regarding your specific allergies or intolerances.
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Frequently asked questions
Every product undergoes our Healf Curation Process. With it, you can shop confidently knowing that every item has been tried and tested before it reaches you. Our Healf Curation Process includes three key steps: Brand Discovery, Expert Validation, and Community Testing. Through these, we assess quality, ingredients, effectiveness, and more, ensuring that every product empowers your wellbeing.
The Healf Source offers detailed insights into different aspects of wellbeing, as well as guidance, research, recipes, and more to help you invest in your personal wellbeing journey. You can also subscribe to our weekly newsletters for the latest updates at Healf and in the wellbeing industry. Subscribe via the sign-up block at the bottom of this page.
We love people who check ingredients as carefully as we do, so you'll find detailed information about the ingredients used on every product page (where applicable). If you see something you'd like to flag with us or have additional questions, please don't hesitate to get in touch—we'd love to hear from you.
Healf Curation Process™
Every product undergoes our rigorous Healf Curation Process, ensuring you are always getting the best when it comes to your wellbeing.
The Discovery
Expert Validation
Community Testing
The Discovery
Expert Validation