My Husband, 53 Years Of Age, Was Recently Diagnosed With

My husband, 53 years of age, was recently diagnosed with early onset dementia. He was prescribed and has been taking Donepezil 5mg each evening for approx. 1 week. Due to some neck strain/pain, his doctor prescribed Methylpred 4mg pack (qty:21). Are there any adverse interactions between these 2 medications? It looks like on day 1, he is to take 2 tablets before breakfast, 1 tablet after lunch and dinner, and 2 tablets at bedtime. On day 2, it decreases to 5 tablets; Day 3 = 4 tablets, and so on until all 21 are taken. I am worried about the Donepezil and the Methylpred in the evenings.