Chamomile:

Chamomile is famous for its appetite increasing properties. The daily intake of this will help you improve your appetite. Naturally, you will see changes in your weight. If you have been skinny and underweight all your life, use chamomile and its extracts. You are surely going to see the change.

Blessed Thistle:

Blessed Thistle has often been used in bitter tonics and is known to increase appetite, improve digestion and help people put on some weight. People who struggle with weight gain issues should definitely try this once. It is worth a try and has been appreciated by all those who have used this.

Gentian:

Gentian roots have been used for decades to treat people who suffer with unwanted weight loss and lack of appetite issues. It helps the body absorb food the right way. It increases the gastric sensations, appetite as well as bile flow. It is a very bitter herb, and usually bitter herbs help you eat better during meals.