Here are some recommended toothpaste you can buy.

For all-natural toothpaste:

Nature’s Gate Natural Toothpaste

For stain removal:

Colgate Optic White Platinum Stain-Less White Toothpaste

For kids:

Hello Oral Care Fluoride Toothpaste

With charcoal:

Dental Expert Active Whitening Charcoal Toothpaste

For fresh breath:

Colgate Total Advanced Fresh Toothpaste

For sensitive teeth:

Sensodyne True White Sensitive Teeth Toothpaste

With charcoal:

Dental Expert Active Whitening Charcoal Toothpaste

For overall:

Sensodyne Pronamel Gentle Whitening Toothpaste