Laughter Wellness is an evolution of Laughter Yoga, itself the synthesis of over 30 years of research in Laughter Therapy. While it is impossible to make a black and white comparison of both methods (many laughter practitioners are trained in, or inspired by both), here is a very general overview of how each approach complement each other:

Laughter Yoga
Laughter Wellness
An exercise regime that has become a world brand.A complete wellness and well-being workout that is often white labelled.
Follows the Laughter Yoga protocol in which the strongest emphasis is on laughter exercises.Follows the Laughter Wellness protocol (demo videos here) that incorporates a series of cognitive-behavioral therapies to arouse smiling, laughter, pleasant feelings and positive energies.
Built on voluntary, simulated laughter. Leans on having all participants doing everything big and loud.Builds on intentional laughter and the mindset that comes with it. Leans on doing everything gently and allowing people to participate at their chosen level of comfort.
Is about having fun. Advocates childlike playfulness.Is about arousing smiling, laughter, pleasant feelings and positive energies. Advocates developing a healthy and sustainable adult relationship with our inner child.
Promotes health, joy and community with a strong emphasis on happiness and World peace through laughter.Promotes health, joy and community with a strong emphasis on peace of mind and an inner locus of control.
Iconic quotes: “Laugh for no reason” and “Fake it until you make it.”Iconic quotes: “Choose to laugh” and “Face it, don’t fake it.
Very popular in the world of community laughter clubs.A source of inspiration and ideas for laughter, healing, service and education professionals.
18 minutes with Dr Madan Kataria, creator of Laughter Yoga:

12 minutes with Sebastian Gendry, creator of Laughter Wellness: