For babies / small children you will rarely be wrong if you give them the homeophic remedy Calc carb D6 for many conditions ( after excluding any severe disease)

Woman : tired, hair loss, no energy ,weight gain for no good reason, depressed

give homeopathic thyroid D12 and you may see wonders, even if she had normal thyroid functios

Depessed (long tim), salt craving, feels worse in the sun: try Nat.mur D30

Heartburn( tzarevet): if no solution found—–try Robinia D6 after meals or before sleep