In contrast to many other supplements, CB-1 Weight Gainer is aimed towards those who are underweight. This weight gainer also claims to regulate metabolism and encourage a healthy appetite. It contains milk proteins as well as soy protein which are known for their fat-burning properties. Although it is not recommended for those who are overweight or obese, this supplement may help them in losing weight since it contains a high quantity of caffeine and taurine. Caffeine stimulates the central nervous system and increases the body's ability to burn calories while taurine promotes muscle growth which can help individuals feel fuller longer. Those who are underweight but want to build up some muscle mass could use CB-1 Weight Gainer. The only problem is that this product is only available in Canada and costs $150 for 30 servings (about $4.50 per serving). Since it is not recommended for those who are underweight, avoid using this product if you are pregnant or planning to become pregnant. Also, people with diabetes, heart disease, cancer, or autoimmune diseases should not use this product. Finally, do not take this product if you are allergic to any ingredients found in it including soy, milk, or wheat.