Lac-ac. is the morning-stomach remedy. Its patient wakes with a mouth full of saliva, a sour taste, dull frontal heaviness and a deathly nausea that is quieted by eating. The entire organism runs on an empty-tank sensation: motion—especially travel or simply rising—turns the stomach; thinking before breakfast clouds the brow; the oesophagus burns with heartburn and sour waterbrash; yet a few mouthfuls of dry food or a small breakfast make the head clear and the stomach still. This polarity—worse fasting / better eating—is constant, threading Mind, Head, Stomach and the special field of pregnancy nausea, where salivation and sour regurgitations are notable, and small frequent meals give relief. A second plane is glycosuria: thirst, polyuria, pruritic dry skin and weight-loss coexist with the same gastric axis. These diabetics are morning-worse and diet-dependent; mental dulness and peevishness tilt toward ease as the stomach settles and urine output diminishes. The third plane is kinetosis: motion stirs a persistent nausea with ptyalism; stillness and air help, but again food steadies the centre.

Kingdom and miasm show a functional (psoric) medicine with tubercular lability: symptoms flare with emptying and movement, subside with feeding and rest. There is little destructive pathology at first; rather a regulative influence on acid secretion and carbohydrate handling. Micro-comparisons crystallise it: Robinia burns at night with fiercely acrid vomit; Iris burns all along the track and carries bilious migraine; Nux-vomica is the irritable over-driven dyspeptic who may not feel notably better after food; Symphoricarpus in pregnancy is obstinate and not relieved by eating; Phos-acid holds the apathetic diabetic without Lac-ac.’s gastric morning key; Uran-nit. and Syzygium move sugar but do not settle the stomach. Prescribe Lac-ac. where breakfast is medicine: if a biscuit in bed converts nausea to capacity, if the head clears with eating, if a thin, thirsty dyspeptic wakes sour and cross yet grows human after food. Dietary discipline—plain, dry, frequent small meals; avoid sweets, rich milk, pastry—is not ancillary but part of the simile, and when woven with the remedy, the arc bends toward clear mornings and quieter metabolism.

The Lecithinum patient is worn thin by use rather than by disease. His centre is functional exhaustion with a trophic deficit: the brain is over-drawn; the blood is pale; the muscles tremble with little; sexual power flags; sleep is poor because the forces are spent, not because the mind is over-excited. He is best seen in students, clerks, professionals, nursing mothers, and convalescents who, after strain, cannot fill the day without blankness and a dull empty headache. The modalities clinch: worse from long mental effort, sexual excess, late hours, close rooms, and worry; better from rest, routine, fresh air, simple nourishing food, early sleep, and reserve in venery. The signature is rebuild: appetite returns, weight and colour improve, attention holds, and sexual confidence follows as the organism is resupplied—an action consonant with lecithin’s role in myelin and cell membranes and the observed amelioration of blood and nutrition under its use [Hughes], [Clarke], [Boericke].

Kingdom-wise, as an organic phosphorised compound, Lecithinum stands between nerve salts and phosphorus: it lacks Phosphorus’ burning, hæmorrhagic, and erethistic qualities; it shares Kali-phos.’s nerve fatigue but adds a somatic up-building that shows on the scale and in the face. In the sexual sphere it is not the irritable, talkative Selenium, nor the indifferent Agnus; it is the worker whose power has ebbed and who recovers with rest and regimen. In children and youths, the picture is over-schooling or post-illness failure to thrive, with pallor and short breath on exertion; as routine and nourishment are restored, sleep deepens, headache disappears, and mood steadies. Prescribing pivots on three pillars: (1) Brain-fag with weak memory and empty headache, (2) Anæmia with easy fatigue and palpitations of weakness, and (3) Sexual debility from excess or convalescence, all worse from over-use and better from rest, air, early sleep and simple food. When similitude takes hold, the change is quiet: earlier bed, earlier waking with appetite, steadier pulse on stairs, clearer head at noon, and an end to anxious emissions. Lecithinum thus serves as a nutritive similimum where the system is not inflamed or shattered, but spent—asking not for lash or sedative, but for order and rebuilding.