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Exogenous ketones

Supplement specialty compound fitnessenergy
Aka: BHB salts, beta-hydroxybutyrate, ketone esters
Brands seen in Singapore: Nobi Nutrition, KetoLogic, Nutricost, Real Ketones, Sports Research
Third-party tested: Sports Research certifies other products with NSF Certified for Sport, but nothing for exogenous ketones.Certification is granted per product, so check the tub you actually own. Not being listed is not the same as failing.
Not medical advice. Check with your doctor or pharmacist before you start, stop or change the timing of anything you take.
How to use
What it’s for
Raises blood ketones — mostly a research tool so far
Pros & cons
Pros
  • Esters raise blood ketones more than salts do
  • Esters bring less gut discomfort than salts
  • Blood glucose fell in human studies
Cons
  • Salts carry a high mineral load — gut distress
  • Taste, tolerability and cost stay a challenge
  • Sold ahead of the evidence for everyday use
Sources
  1. Exogenous ketone supplementation: an emerging tool for physiologists with potential as a metabolic therapy (Falkenhain et al., Exp Physiol 2023) · read 2026-08-27
    what it says
    “Ketone salts consist of β‐OHB bound to a mineral (e.g., sodium, potassium, magnesium) … Generally, ketone esters are more potent at raising blood ketones than ketone salts and lead to fewer adverse side effects (e.g., less gastrointestinal discomfort)”
  2. HSA — Guidelines on Prohibited and Restricted Ingredients in Health Supplements and Traditional Medicines (Oct 2025), Annex A · read 2026-08-27
    what it says
    “A list of specific prohibited and restricted ingredients is provided in Annex A … This list is not exhaustive. Dealers are responsible to ensure that their products are safe and appropriate for the target consumers.”
  3. HSA — Health Supplements Guidelines (Jan 2026), Tables 4–5 · read 2026-08-27
    what it says
    “HS for use by the general adult population should not contain vitamins and minerals exceeding the stipulated limits stated in Tables 4 and 5.”
  4. iHerb Singapore — BHB (exogenous ketone salts) category page, default order (1 - 42 of 42 results) · read 2026-08-27
    what it says
    “Nobi Nutrition, Premium Women's Fat Burner with Raspberry Ketones … KetoLogic, Keto BHB, 60 Capsules … Nutricost, BHB Salts, goBHB®, Unflavored … Real Ketones, Elevate, Orange … Sports Research, Keto+, Raspberry Lemonade”
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Updated 2026-08-30. Every line above traces to a numbered source. Kozen-X is not a medical device and does not give medical advice. It lists what published sources have written down — nothing more. A pair not listed is unrecorded, not cleared. Before you start, stop or re-time anything, talk to your doctor or pharmacist.