Ontocur Letharg

Our recommendation for relief from fatigue as a side effect of chemotherapy

After long years of research and development together with clinics, physicians and nutrition experts, we have succeeded in developing a range of 100% organic products for the effective management of side effects from chemo and radiotherapy.

Ontocur Letharg is a supplementary balanced diet based on the active ingredient Acetyl L-Carnitine. L-Carnitine is often consided similar to vitamins in the sense that the human body must have it to produce energy, and for normal lipid metabolism**. The body can produce around 10% itself; the rest must be obtained from foods such as meat, eggs or dairy, or from food supplements. Many cancer patients have an L-Carnitine deficiency that can lead to fatigue, exhaustion and malnutrition.

L-Carnitine probably reduces symptoms such as chronic fatigue by improving the body’s energy balance (optimizing fat oxidation), but also through its positive effect on carbohydrate metabolism**.


(See disclaimer for * and **)


  • Holistic and cost-effective
  • Pure, concentrated Acetyl-L-Carnitine
  • Well tolerated, no side effects
  • Suitable for preventive care
  • Documented therapy success (some smaller trials)
  • Easy to use
  • Produced to high standards of quality


  • Improves patients’ quality of life during and after therapy
  • Higher patient satisfaction
  • Stabilises success of therapy

Mode of Action of Ontocur Letharg

The normal daily requirement for L-Carnitine is 200-500mg, but vigorous physical exercise, stress or serious illness can increase this to as much as 1200mg. The body can only produce around 10% of the L-Carnitine we need; the rest must be obtained from food or food supplements.

Cancer patients often suffer from an L-Carnitine deficiency. Scientists assume that 70-80% of patients with advanced stages of cancer are affected. Many causes have been identified to date; for example, certain chemotherapeutics can damage the body’s production of carnitine, or cause it to be excreted in higher levels in urine. Also, chemotherapy patients often have poor appetites and hence do not obtain enough L-Carnitine from their food**.

Some small trials have shown that a proven lack of L-Carnitine can be linked to symptoms such as fatigue, exhaustion, malnutrition and depression. L-Carnitine probably improves symptoms such as chronic fatigue by improving the body’s energy balance (optimizing lipid oxidation), but also through its positive effect on carbohydrate metabolism.

L-Carnitine is very well tolerated and does not affect the efficacy of chemotherapy. This means it can be beneficial to take it before, during and after chemotherapy. Several small trials suggest that L-Carnitine may also protect nerve cells and the heart from the side effects of chemotherapy.


(See disclaimer for * and **)

Ingredients and Dosage

Produkt Inhaltsstoffe pro Kapsel *
Ontocur Letharg
Acetyl L-Carnitine 500 mg 6capsules a day (2 in the morning, 2 at midday, 2 in the evening)

Analysis results are subject to normal fluctuations for natural products


Do not exceed the stated dose for Ontocur Letharg. Do not use this product as a substitute for a balanced, varied diet and a healthy lifestyle.

Please consult your doctor or alternative practitioner before taking food supplements in connection with your current therapy – particularly if you are pregnant or are breastfeeding.


(See disclaimer for * and **)

European Market

* Under current EU legislation, health-promoting effects can only be presented for specific ingredients – not for the product (e.g. Ontocur Letharg) itself.
** Mandatory information as per Art. 10 (2) Regulation (EU) No. 1924/2006: Please bear in mind the importance of a varied and balanced diet and a healthy lifestyle. The health-related benefits described can be achieved with the stated daily dosage of the Letharg product described.



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86167 Augsburg

E-Mail: info@sima.bio

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