Can Sentinel Make Dogs Sick?

Can Sentinel Make Dogs Sick? The following adverse reactions have been reported in dogs after giving Sentinel Flavor Tabs: vomiting, depression/lethargy, pruritus, urticaria, diarrhea, anorexia, skin congestion, ataxia, convulsions, hypersalivation and weakness. Is Sentinel safe for dogs? Sentinel® can be used in dogs starting at 4 weeks of age. It is not safe to use