Balaswagandhadi  Thailam,herbal oil preparation used externally to strengthen, nurish the joints and muscles. also called, Ashwagandha bala lakshadi thailam.
Its usage:

1. Headache, fever, emaciation, muscle wasting, lack of strength in joints, muscles and bones.
2. It is used in all Vata diseases like arthritis, neuralgia, paralysis, etc.
   
3. It strengthens muscle, improves quality of blood.
   

Effect on Tridosha – Balances Vata and Pitta.
Balaswagandhadi Tailam ingredients:
768 g of coarse powder of each of
Bala – Sida cordifolia
Ashwagandha – Withania somnifera
Laksha – Laccifer lacca
Water for decoction – 12.288 liters, boiled and reduced to 3.072 liters
Taila – Oil of Sesamum indicum – 768 ml
Mastu – Supernatent liquid of curds – 3.072 liters
12 g of fine powder of each of following, made together as paste.
Rasna- Pluchea lanceolata
Chandana – Red Sandalwood – Pterocarpus santalinus
Manjishta – Rubia cordifolia
Durva – Cynodon dactylon
Madhuka – Licorice – Glycyrrhiza glabra
Choraka – Angelica glauca
Sariva – Hemidesmus indicus
Usheera – Vetiveria zizanioides
Jalada – Cyperus rotundus
Kushta – Saussurea lappa
Agaru – Aquilaria agallocha
Suradruma – Cedrus deodara
Haridra – Turmeric Rhizome – Curcuma Longa
Kumuda – Nymphaea stellata
Kaunti – Vitex agnus-castus
Shatahva – Anethum sowa
Padmakesara – Nelumbium speciosum
Special method – Laksha is powdered well and placed in a vessel. Hot water is poured and stirred well. When the water becomes red it is strained and used.
Reference: Sahasrayoga