Can I take Slenderiiz while on chemotherapy? Administrator August 14, 2017 18:31 We do not condone the use of weight loss products during such a stressful time on the body. Related articles Can someone who is going through any type of surgery still be on Slenderiiz and supplementation? Slenderiiz FAQs Restoriix What do you use for natural flavoring? PureNourish (Natural) Comments 0 comments Please sign in to leave a comment.