Why is the dose one drop, and how does that fit with the three‑month guidance?Updated 2 months ago
1. Short answer
Metabolics liquid B vitamins are designed so that a single serving is just one drop, but the bottle contains a generous number of servings to allow for flexible dosing, especially under practitioner guidance. The “use within three months of opening” message is about guaranteeing potency and product quality, not about ensuring the bottle is completely finished in exactly three months.
2. One‑drop dosing and bottle size
2.1 Why only one drop per day?
Many single B‑vitamin and B12 liquids use a one‑drop daily serving to give a precise, easy‑to‑adjust dose.
The bottle contains more than 90 drops so that practitioners can tailor the dose (for example more than one drop per day) where appropriate.
The label dose is the general recommended daily amount, not a promise that the bottle will empty exactly at three months.
You can reassure customers that any “extra” in the bottle is deliberate and provides flexibility and value, rather than indicating an error in the dosing instructions.
2.2 Why most people take more than the NRV
Most people who supplement B vitamins take daily amounts that are higher than the Nutrient Reference Value (NRV).
You can explain:
B vitamins are water‑soluble, and only a proportion of what is consumed is absorbed and utilised; the rest is excreted.
For this reason, supplements are commonly formulated and used at levels above the NRV, while still being appropriate for many people.
Include the customer‑friendly explanation:
“Most people take B vitamins at dosages far in excess of the NRV. This is because B vitamins are generally considered to have a fairly low absorption proportional to their consumption, meaning that you only benefit from a small percentage of what is actually consumed.”
3. The three‑month “use after opening” guidance
3.1 What the three‑month statement means
Metabolics adds a three‑month window after opening to protect quality and potency of the liquid, not because the product suddenly becomes unsafe one day after that point.
You can use or adapt:
“Our formulas are also with consideration of the quantities we sell, and the longevity of our products. It is not that a product will necessarily become unsafe after the three‑month period, but we cannot guarantee its potency after this time. So, you may find that the product is less effective after three months as the longer it is used, and the more the bottle is opened on a daily basis, it may lead to exposing the product to a source of contamination (such as moisture) or oxygen and this may affect the efficacy of the product.”
3.2 Why liquids are more sensitive
Every opening of the bottle allows some air and moisture to enter, and over time this can slowly reduce the strength of sensitive nutrients.
Light, temperature and storage conditions also influence stability, particularly with water‑based liquids.
After three months, Metabolics can no longer guarantee that the contents still match the label potency, even if the product has been stored correctly.
If a customer asks “is it dangerous after three months?”, you can say that the guidance is about guaranteed potency and best practice; Metabolics cannot confirm safety or effectiveness beyond the stated period and recommends discarding any remaining liquid after this time.
4. Why individual B‑vitamin needs vary
4.1 Different people, different requirements
Metabolics cannot diagnose or recommend doses for specific individuals, but it is appropriate to explain that B‑vitamin needs are not the same for everyone.
You can say:
“As you can imagine, everybody has very different requirements for supplementation. For example, somebody who weighs 65 kg and has a plant‑based diet will most likely have a very different requirement for supplementary B12 to someone who weighs 90 kg but eats a lot of red meat.”
Further neutral points you can include:
Diet, body weight, age and digestive health can all influence B‑vitamin requirements.
This is why Metabolics offers flexible liquid dosing and a range of B‑vitamin products for practitioner use.
4.2 Always recommend professional consultation
Metabolics must follow UK and GB nutrition and health‑claims rules and cannot provide individual medical advice.
You can close with:
“We always recommend that people take supplements following professional consultation to ensure they are getting what they need. A healthcare practitioner can look at your diet, health history and any test results, and then advise whether supplementation is appropriate, and if so, which product and dose may be suitable for you.”
5. Suggested reply template for agents (for Gorgias macros)
“Thank you for your question about our liquid B vitamins and the one‑drop dose.
Many of our B‑vitamin liquids are designed so that one drop is the daily serving. The bottles are filled with a generous number of servings to allow for flexible dosing, especially where a healthcare practitioner may recommend a higher or adjusted intake. This means a bottle will not always be completely finished in exactly three months.
Our ‘use within three months of opening’ guidance is about product quality and potency rather than sudden safety concerns. Over time, each time the bottle is opened it is exposed to air and small amounts of moisture, which can gradually affect the strength of the nutrients. After three months, we can no longer guarantee the labelled potency, so the product may be less effective.
Most people who take B‑vitamin supplements use amounts higher than the Nutrient Reference Value because B vitamins are water‑soluble and only a proportion of what is consumed is absorbed. Everyone’s requirements are different – for example, someone following a plant‑based diet is likely to have different B12 needs to someone who regularly eats red meat.
We always recommend taking supplements following professional consultation so that a healthcare practitioner can advise whether supplementation is appropriate for you personally, and if so, which product and dose best fits your individual needs. Metabolics is unable to offer personalised medical advice or diagnose deficiency.”
6. How to contact Metabolics
For questions about ingredients, formats, dosing instructions on the label, ordering or delivery (not personal medical advice), the Customer Services team can help.
Contact details
Email: [email protected]
Post: Metabolics Ltd, 5 Eastcott Common, Eastcott, Devizes, Wiltshire, SN10 4PL, United Kingdom
Office hours: Monday–Thursday 8:30–17:30, Friday 8:30–17:00 (UK time)
For advice about your own health, symptoms or test results, please speak directly with your healthcare practitioner, as Metabolics cannot provide individual clinical guidance