Vitamin B6
Small doses of vitamin B6 supplements may help reduce nausea because it contains a nutrient called pyridoxine. Pyridoxine helps the body absorb essential amino acids, reducing feelings of nausea. A study [8] showed two groups of women; one group had high levels of vitamin B6 in their blood and vice versa. The women with low vitamin B6 in their bodies had intense nausea symptoms, while the other group had significantly reduced feelings of vomiting.
Fennel Powder
Fennel powder contains soluble fiber, which is famous for promoting gastrointestinal health by relaxing the digestive tract muscles; thereby, preventing bloating, cramps, and gas. It may induce bowel movements if consumed in safe amounts, warding-off constipation-related nausea. Tight muscles in the gastrointestinal tract lead to spasms, causing gas to build up; fennel powder has a soothing effect on these organs. As a treatment for constipation, fennel powder calms the tense muscles in the GI tract for a smooth-running system free from feelings of nausea.