Part 4 of our Deep GUNA Research series, for practitioners.
This article is written for a practitioner audience and draws directly on GUNA's own published research. It is educational in nature and does not replace clinical judgement or personalised medical advice.
After the two basic medicines, K2F and K2M, GUNA's secondary group of INET medicines — Senectus F and Senectus M — introduces a more complex structure: single homeopathic remedies, vitamins and substances with their own neuroendocrine activity, layered onto the typical INET foundation. As their name suggests (Senectus is Latin for old age), these formulas are for use in geriatrics and gerontology specifically.
Full Composition
Why Each Addition Is There
Every addition to the Senectus formulas has a specific physiological rationale, and understanding it is really understanding why this product exists at all.
Phosphorus, present in three separate potencies — 6CH, 30CH and 200K — is added because it is a homeopathic remedy specifically associated with degenerative processes of the cerebral, hepatic and pulmonary cells typical of senescence. As GUNA's own literature puts it, "Phosphorus gives energy and light to the nervous cell": it acts on the mitochondria, particularly the electron-transport chain, promoting oxidative phosphorylation and, as a result, greater ATP synthesis. The Centesimal (CH) and Korsakovian (K) dilutions were chosen deliberately, to make use of the marked tropism these two particular homeopathic dilution methods have for nervous tissue.
Serotonin and Tryptophan are included to address the reduced serotoninergic tone commonly seen in the ageing brain — a condition current neuroscience links to senile depression, psychophysical asthenia, senile aboulia and sleeping disorders. Both substances also play a documented part in the synthesis of melatonin, tying this addition back to the pineal-gland focus that runs through the whole INET range.
Vitamins B1, B12, C and Folic Acid round out the formula as the basic biological catalysts for intermediary metabolism — nutrients that are often deficient in the elderly due to poor absorption, and whose blockage can act as a trigger for degenerative cell processes.
Eleutherococcus (Siberian Ginseng) earns its place through its content of Eleutheroside A and M, provitamin A, vitamin E and caffeic acid. These constituents are credited with increasing psychophysical tone, acting as an anabolic and anti-anaemic agent, improving appetite, and stimulating the immune system.
Field of Action
GUNA describes the field of action for Senectus F and Senectus M as covering:
- Senile asthenia
- Strain dyspnea (secondary to moderate-level cardiac insufficiency)
- Memory disorders
- Sleeping disorders
- Cerebral atherosclerosis-type vasculopathies
- Mild coronary disorders
- Pathologies secondary to cerebral vascular disorders
Posology
10 drops, 2-3 times a day. Do not exceed the maximum daily dose of 30 drops.
A More Targeted Layer on the Same Foundation
What Senectus F and Senectus M illustrate well is how the INET product family scales in complexity without abandoning its underlying logic. The core neuroendocrine axis addressed by K2F and K2M stays intact; what changes is the addition of substances chosen specifically for the physiological realities of an ageing nervous and endocrine system — reduced serotonin tone, mitochondrial decline, absorption-related vitamin deficiency, and the general loss of psychophysical resilience that comes with age.
The next article in this series covers the third and most specialised INET product group: K2F-DIA and K2M-DIA, formulated as an adjunct in the management of Type 1 diabetes.
Featured products

Guna Senectus F
Neuroendocrine support formulated for healthy ageing in women.

Guna Senectus M
Neuroendocrine support formulated for healthy ageing in men.
Explore the full Guna Endocrinology range — INET compounds and neuroendocrine support built on GUNA’s PNEI research.
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Related reading
- K2F and K2M in Full: Composition and Rationale of the Primary INET Group
- K2F-DIA and K2M-DIA in Full: Composition and the Five Energy Movements Rationale
- GUNA's Clinical Case Reports: Male Infertility and Type 1 Diabetes
Source: GUNA, *From Homotoxicology to INET*, "The Secondary Group of Medicines — Senectus F and Senectus M."
Tags: Deep Guna Research, Guna Articles, Senectus, Healthy Ageing