To minimise the risk of poisoning you are advised:

Benadryl, an antihistamine, is safe for cats. ½ tablet per 10 lbs. of cat (12.5 mg?). Also, Periactin. BioPlasma: Homeopathic remedy for all around body boosting. 1 tablet daily. Can also be used as a blood purifier. Bonemeal: Used to firm up stools and slow elimination process. ¼ teaspoon daily. ................
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