Yes, and children benefit from it especially, above all as prevention. Any adult treatment can be applied to a child; the single adaptation for infants under 3 is to halve the exposure time – not because of a safety margin, but because infants and children respond considerably faster than adults. An adult applies the treatment, and the device itself is kept out of children's reach between sessions, as any laser apparatus should be.
Yes – coMra is safe to use throughout pregnancy, and pregnancy is explicitly not a contraindication. It works by restoring the body's own functional reserve rather than by introducing a substance, so the everyday complaints of pregnancy – colds and flu, headaches, digestive trouble, blood-pressure and postural back pain – can be addressed without the fetal risk that medication carries. The low intensity that makes this possible also means there is no dose to get wrong.
coMra has no absolute contraindications – there is no condition, age or state of health that rules it out, and pregnancy, cancer and treatment of the eye area are specifically included rather than excluded. What it does have is a short list of precautions: laser light must never reach an open eye, the device stays at least 30 cm from a cardiac or neurostimulator implant, the heart area is treated only at 5 Hz, and the device is applied to bare skin. "No absolute contraindications" means nobody is excluded; it does not mean there are no rules.