What is a good whitening product to use if you have sensitive gums?

Nothing too strong: First have your dentist determine why your gums are so sensitive. After that, you can use something as simple as a medicated whitening toothpaste. If it is your teeth that are sensitive, then flouride can be applied first to help desensitize them. You may them be able to have them whitened with a stronger product.

Dentist Assist Best: While there are many good over the counter whitening products on the market especially in a situation where your teeth are already sensitive a doctor assisted product would be best. Your dentist, based on their experience and training, can select the best product/technique for your specific need.