Hi, my father is taking regularly following 2 medicines- Revelol XL 50 mg & Rozucor ASP 20 mg. He is having following conditions- Hypertension, Dyslipidemia, Asymptomatic Bilateral Inguinal Hernia (small), Asymptomatic G B mobile stone (13.8mm). We also have the history of stroke in our family. For Hernia & Stone, doctors said to wait and watch till the symptoms arise. Now, I want him to take multi vitamins health supplements (having alteast Vit C,D & Zinc) along with above 2 medicines to boost up his immunity in this Covid pandemic. Can I give him the most famous and popular brand "Revital H"? Is Revital H safe with above 2 medicines? Is there any issue of drug interaction? Kindly suggest on taking Revital H. Also suggest any other famous multi vitamin health supplements to boost up his immunity. Thanks- Prakhar Dubey.