Mobile app based medical prescription drugs subscription service international presence

[Prev_dev]

Looking to explore if I can use Shopify to get the next version of my app built rather than doing all ground up.

App is iOS/Android

      User will get the prescription generated in the app via the app logic ( questions etc. )

     Via the prescription (issued in backend by doctor) the order ( pills, address, customer ID) will be sent to the pharmacy partner

     Pharmacy partner will deliver the drug 

Present on many countries (languages and medical SKU varying)

Needs different payment methods depending on country 

Needs whatsapp customer support/chat mechanism

Can I use Shopify to do the heavy lifting  ? What all integrations do I need to do with SHopify for this and any recommendations ?