Diabetic patient advice. On low prices.

Hello sir Father age 55 he was in under medicine since 30 yrs for diabetics nad high BP below medicine he use as per doctor checkup monthly 1.Triviglator 1mg glimipride For diebatic 2.Ctdt am 6.25/40/5 Telmistran 40+ amlodipine5mg+ chloratharidone 6.25 formula Kindly advice apart from this he never take any medicine now a days he was saying he getting knee pain or feeling losing weight . Bht when we check weight is always same in hospital like 63kgs . He feeling like that may I know any side effect with that tablets pls tell . And my main concern is can my father take Omega 3 1000 mg capsule pls tell becoz he will not follow any diet plan he will not interested . He eat only rice 2 times regular only . He not even intrest in eating fruits or boil egg whatever. So pls tell any good multivitamin and calcium tablet on low prices. Thankyou hope I get reply proper answer