While there is no definitive evidence that vitamins can directly help individuals quit smoking, certain vitamins and supplements may be helpful in supporting overall health during the quitting process. Here are some vitamins that may be helpful:

Vitamin C: Helps to repair tissues and reduce the damage caused by smoking. It is also an antioxidant that can help to prevent oxidative stress.

Vitamin E: Helps to protect cells from oxidative stress caused by smoking.

Vitamin B-complex: Helps to support the nervous system and reduce stress.

Vitamin D: Helps to support overall bone health, which may be affected by smoking.

Calcium: Helps to support overall bone health and may be helpful in reducing the risk of osteoporosis, which may be a concern for smokers.

Magnesium: Helps to support muscle function and reduce stress.

Zinc: Helps to support the immune system and reduce stress.

It is always recommended to speak with a healthcare professional before starting any new supplements or vitamins.