How do remedies work? Gemstones/ yantrās /Effectiveness / examples / astrological causes

Remedies for karmic debts can work effectively but they have to be exercised in certain manner. For example in case of certain rogā, the medicine cannot be given in raw form while in others

medicine should only be given in raw form only.

Therefore, the modus operandi of remedies is very important.
The quantity of japa, Pooja, homam, ḍeepa etc. has to be decided for their effectiveness. For example, a childless couple suffering from Sarpa dośa cannot have a child

by mere lighting a lamp in front of ṇagas. In other cases where case is small, the remedies are also small. Some remedies are expensive and strong but they have to be followed in same manner. Some remedies requires expert tantric etc. without which they cannot be done. The ten

Mahāvidhya requires a proper initiate or sadhak of mahāvidhya which is rare to find. Only he/she can solve the problem.

Mantras taken from book have no power either because they are nailed or because they lack the power of the Guru or initiate who lives with the mantra. That

power is transferred to student when the mantra is whispered in his/her ears. The mantra, homam, prayers etc requires expert mantraśastri or tantric who can do the Poojas. Ordinary purohits are not aware of the proper ritualistic procedure so their Poojas might not work.