Fenbendazole + DCA
Click here for the study

Fenbendazole + Sulindac
Reduced the number of tumors by 56% as a single agent and up to 90% in combination 
Click here for study

Fenbendazole + Cimetidine
Cimetidine can increase the bioavailability of other drugs and increase their potency so be cautious of taking this with other drugs. However if you’re taking Fenbendazole, it increases the potency if you’re taking a lower dose of Fenbendazole.

Dipyridamole + Aspirin +  Magnesium
Some Dipyridamole tablets come together with Aspirin
Dipyridamole + Aspirin Synergy study

NSAIDs + Statins(lipophilic)
Celecoxib + Lipopilic Statins ex. Simvastain – 5x stronger

Etodolac + Proranolol 
Prior to surgery and after surgery reduces risk of recurrence of cancer

Juglone + Thymoquinone combination works synergistically together against pancreatic cancer
Black Walnut is rich in Juglone
Here is the good Black Walnut Extract on Amazon
Thymoquinone is in Black seed oil, Cancer studies recommend minimum 1 tsp
This brand has a good dark color consistent of  what a good black seed oil should look like on Amazon

Losartan + Immunotherapy

Avastin + Tetrathiomolybdate
Avastin blocks VEGF
Tetrathiomolybdate indirectly blocks VEGF
Cancer can become resistant to Avastin overtime
So by combining both, it reduces cancer from becoming resistant