Hello I am really sorry to hear about your husband As you are living alone , in low mood , tired and no energy , depression is a known thing to happy after 70 years , at the age of 80 years , our medical books say , use as less medicine as possible , as your body knows how to remain in harmony for last 80 years Serotinin is a happy neurotransmitter Dopamine is energy neurotransmitter GABA is a sleeping neurotransmitter You dont know which of the neurotransmitter is less in your body , as taking extra serotinin can dissrupt the neurotransmitter harmony , and can cause increase suicidal tendency I have seen the product site What you need is , friends so that you can ventilate , get your self busy in any thing you like , psychiatric counselling , if required serotinin drugs If helpful to your click on helpful vite Take care and stay happy