Rejuvenating power in Ayurveda is discussed under rasayan tantra.So here is the description of Rejuvenative tonics and the herbs to increase Rejuvenating power to be healthy and smart In Ayurveda there are lots of Tonics. However i am discussing about a couple of tonics, in context to the natural herbs.
Rejuvenative tonics: These are some of the most important herbs or Rasayanas in Ayurveda and are said to increase the subtle qualities of the mind and body, bringing longevity, renewal and revitalisation. They increase the subtle essence of life in the body, ojas and bring clarity to the mind and strength to the body. Rasayanas for vata include: ashwagandha, bala, bhringaraj, calamus, chywanaprash, guggul, haritaki and triphala. Rasayanas for pitta include: aloe vera, amalaki, brahmi, gotu kola, guduchi, saffron and shatavari. Rasayanas for kapha include: bibhitaki, guggul, pippali and triphala. When an Ayurvedic practitioner has a client with a particular complaint he will aim to determine the underlying cause of the problem and not focus primarily of the disease itself. He will establish which dosha has gone out of balance and then suggest lifestyle and dietary changes to help bring the offending dosha back into balance. He may also suggest ingesting herbal formulas to speed the process along and his choices will be based on the energetic qualities of the herbs used. Thus, if the underlying dosha that is causing the problem is vata, which has the qualities of bitter, light, cold and dry, he may prescribe herbs that have opposite qualities to this; sweet, heavy, warming and moistening. He will also take into account whether heating or cooling herbs (vipaka) are more appropriate and also whether there are any herbs with special properties (prabhava) which may be indicated. It is usual for an Ayurvedic herbal formula to have many different herbs in it, each creating a particular effect and complementing or balancing one another. If a herb is specifically known to treat the particular condition (prabhava) this will form a relatively large part of the herbal formula. Other herbs will be added to treat the imbalanced dosha, whilst others may be added to treat the tissues (dhatus) and channels (shrotas) involved. The state of the digestive fire (agni) and the amount of toxicity (ama) in the body will also be given due consideration and the necessary herbs added. Thus, some traditional herbal formulas have as many as fifty herbs in them. The vehicle that is used as a carrier for the herbs is also very important so hot water or milk may be use to target vata, aloe vera to target pitta and honey to target kapha. The time of day the herbs are taken affects the manner in which the body will respond as a herbal formula may act on one particular tissue or dosha at 6am and another at 6pm. Also, herbs taken before a meal may have a very different action on the physiology if taken during or after a meal.
Nutritive tonics: They nourish the body and increase body mass and are usually sweet, heavy, oily, mucilaginous and kapha increasing. They can increase ama and reduce the digestive fire and are often combined with more stimulating herbs to counteract this in certain conditions. Nutritive tonics include: almonds, amalaki, angelica, bala, coconut, comfrey root, dates, flaxseeds, ginseng, honey, Irish moss, licorice, jaggary, marshmallow, milk, raisins, sesame seeds, shatavari, slippery elm and wild yam.