I would encourage you to follow the following tips for gaining weight naturally-
1) You must include dry fruits in your diet such as Raisins. Almonds, Cashew - nuts and Pea - nuts. A little quantity of these dry dry - fruits after you meal would be helpful to you in weight gain.
2) Consume one or two bananas along with a glass of sweetened hot milk.
3) Enhance the carbohydrate intake such as mashed Potatoes in the meal.
4) Intake of Protiens such as Yoghurt, boiled Eggs, Chicken - soup or Cooked - chicken would enhance your BMI.
5) A short nap for at least forty - five after your day - meal would help you to gain weight.
6) You have to enhance the rate of metabolism of the system by taking a small piece of Ginger, twenty minutes prior to meal or add raw Tomato salad followed by addition of slight amount of Black - pipper in it to rectify the same. By doing so, you would keep your digestion system in order.
7) Involve daily for brisk walk or cycling for thirty minutes to make your muscle strong.
8) You may even take a glass of warm - milk sweetened with a table- spoon of honey prior to retirement to bed. This would produce sound sleep.
The Ayurvedic - granule, the Accumass contains eighteen herbs and each of it would react differently in the human - body. It cannot be ascertained to what extent it would be benificial to you. Moreover, in absence of Laboratory - test, the quantum of heavy metals such as Lead, Mercury and Tin cannot be detected - each having detrimental - effect in the system. Prolonged - use of the same for gaining weight is not advisable because of habit - forming addiction.