One Week Flat

Recommended use

Natural food supplement suitable for adults and children (from 4 years onwards) with the following recommendations:

• Take 1 sachet daily for 7 consecutive days, preferably with breakfast.
• Pour an inch of water into a tall glass, leaving plenty of room for swirling.
• Shake the sachet before gently sprinkling the powder into the glass.
• Vigorously swirl the water around in the glass making sure the powder is dissolved.

We highly recommend you take One Week Flat for 7 consecutive days. Many consumers like to take this course once a month. However, it can be taken on an ongoing basis or as desired.

Storage

• Store in a cool, dry place below 25°C and out of direct sunlight.

One Week Flat Customer Questions

All questions answered by probiotic experts Dr. Kate Stephens PhD (Food and Microbial Sciences) BSc (Hons) Medical Microbiology and Kerry Beeson BSc (Nutritional Medicine) Nutritional Therapist.

Is One Week Flat suitable for both men and women?

Definitely! Friendly gut bacteria are not gender specific. This means that One Week Flat is suitable to be taken by everyone over the age of 4 years: women, men, and trans and non-binary people too!

How often should I take this friendly bacteria supplement?

It is recommended to take One Week Flat every day for at least one week. After that the rest is down to personal preference. One Week Flat can be used in the short term, as a week-long course for those who are looking for an affordable way to complement their natural gut bacteria every now and then. Equally, it can be used on an ongoing basis. There is no ‘right’ or ‘wrong’ way to take it. Here are some of the ways that our loyal One Week Flat customers take this supplement:

• a 7-day course regularly every month
• a 7-day course as and when desired
• one sachet every day on an ongoing basis

What does One Week Flat taste of?

One Week Flat has a fairly ‘neutral’ taste and most people find it easy and pleasant to take. You may notice a slight natural sweetness which comes from the Fructooligosaccharide (FOS) fibres, but you can rest assured that the supplement contains no added flavourings, sugar, or sweeteners.

I get bloated when I eat foods like dairy or gluten - can I take One Week Flat?

One Week Flat is gluten-free, so is fine to be taken by those with food-related bloating. It is also suitable to be taken by those with lactose intolerance^1,2,3. This high-quality supplement contains 4 well-researched strains of friendly bacteria combined with 0.3g FOS fibres. Individual responses to a supplement can vary, but the majority of our customers get on well with this formulation, and purchase on a regular basis.

I'm on a calorie-restricted diet. Can I take One Week Flat?

One Week Flat contains just 7.72 calories per sachet, and 0g fat. Most of the carbohydrate in the supplement comes from the FOS fibres which are not digested, and therefore have almost no calorific content.

Safety

Live cultures are not recommended for those with serious medical conditions e.g. those who are severely immunosuppressed, have pancreatitis, are in the ICU, have melaena, have a central venous catheter, infants with short bowel syndrome, or patients with open wounds following major surgery; unless under a doctor's care. Keep out of reach of children.

This is a food supplement and is not intended to prevent, treat or diagnose any medical conditions. Probiotic supplements should not be used as a substitute for a healthy diet and lifestyle. If you are taking any medications or have a serious medical condition, consult a doctor before use. Optibac supplements will not cause dependency and may be used on an ongoing basis.

References

1. Rampengan et al., (2010), ‘Comparison of efficacies between live and killed probiotics in children with lactose malabsorption’. Southeast Asian Journal of Tropical Medicine and Public Health 41: 474-481
2. D. H. Juers, B. W. Matthews and R. E. Huber, “LacZ β-galactosidase: Structure and function of an enzyme of historical and molecular biological importance,” Protein Science, vol. 21, no. 12, pp. 1792-1807, 2012.#
3. Oak SJ, Jha R. The effects of probiotics in lactose intolerance: A systematic review. Crit Rev Food Sci Nutr. 2019;59(11):1675-1683. doi: 10.1080/10408398.2018.1425977. Epub 2018 Feb 9. PMID: 29425071.

Ingredients

Maltodextrin (natural source); Fructooligosaccharides (FOS 0.3g); Live cultures: Bifidobacterium bifidum Rosell-71, Lactobacillus casei Rosell-215, Lactococcus lactis Rosell-1058 and Lactobacillus acidophilus/helveticus Rosell-52

Each sachet guarantees 5 billion live cultures + 0.3g FOS fibres.

Suitability

• Vegan
• Vegetarian
• Gluten free
• Yeast free
• No added sugar
• Suitable during pregnancy
• Suitable during breastfeeding
• GMO free
• Flavourless
• Free from artificial flavourings, colourings and preservatives
• No chemicals or parabens

Following the taxonomic updates by a global team of scientists and published in April 2020, a reclassification has been advised for the L. casei species. The casei strain in the Optibac One Week Flat product is now also known as Lacticaseibacillus casei Rosell-215.

Visit the Probiotics Learning Lab to find out more about friendly bacteria supplements and bloating.

Customer reviews

• This product is a total game changer. I’ve tried all the opti bac products but this one seemed to agree with me the most and I now take these daily. The opti bac team have been great with their customer care and have been committed to helping me find a product that works for me. Thank you!

  Lauren - 1st March 2022

• Used to get so bloated whenever i had my period. I take a course once a month, starting a 2 or 3 days before my period is due

  Jessica O - 17th January 2022

• I was living with serious bloating when I discovered One Week Flat. I use it regularly now and that bloating no longer happens! I no longer live in England, but I was delighted to find that I could buy it locally. (EU)

  Dorian - 14th June 2021

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UK DELIVERY

Free UK Delivery over £40 

Free standard UK delivery is automatically applied at the checkout when you spend £40.

Standard 2nd class: £2.50

Allow 4-10 working days (Monday - Friday) for delivery; no deliveries on Saturdays

1st class (Tracked): £3.95

Allow 1-3 working days (Monday - Friday) for delivery; no deliveries on Saturdays

Please be aware you may experience a slight delay in receiving your delivery due to the Royal Mail postal strikes in September and October, please see below the affected dates:

• Friday 30th September 2022 ​
• Saturday 1st October 2022

Express Next Day (Tracked): £6.95

Order before 2pm for guaranteed next working day delivery to most of the UK*. Orders placed on Friday will be delivered on Monday (next working day). Requires signature.
*Express delivery may exclude the Channel Islands, Herm Island, Isle of Man, Isle of Wight, Northern Irish postcodes BT18 & upwards, Sark, Scottish borders and offshore and a small number of remote mainland destinations as determined by our delivery courier. 

Good to know

• We'll send you an email to confirm once your parcel has been dispatched.
• For delivery queries, please call us on +44 (0)1264 339 770 or email enquiries@optibacprobiotics.com. 
• Orders placed before 2pm will be dispatched on the same working day.
• Delivery within the UK and Northern Ireland has a fixed price, regardless of the size and weight of your order. 
• Delivery times are estimates and not guaranteed unless otherwise stated.

International Delivery

We offer an excellent worldwide delivery service. For more details, please take a look at our delivery FAQ.