1.  Yes. Phenylephrine; Promethazine: (Major) Keep away from coadministration of hydroxychloroquine and promethazine. http://meadowlandsfc.com/12695/what-did-they-change-the-boy-scouts-name-to : (Main) Avoid coadministration of hydroxychloroquine and tricyclic antidepressants. http://www.maprecord.com/forum/member.php?action=profile&uid=50071 : (Minor) Use warning with the coadministration of hydroxychloroquine and trifluoperazine.
2.  Hydroxychloroquine can decrease the seizure threshold; therefore, the activity of antiepileptic drugs could also be impaired with concomitant use. Protriptyline: (Main) Avoid coadministration of hydroxychloroquine and tricyclic antidepressants. Sotalol administration is associated with QT prolongation and TdP.
3.  If you're being given hydroxychloroquine for suppression or remedy of malaria, it is best to take your tablets as soon as you bear in mind and go back to taking it as you'd normally. Both therapeutic and supratherapeutic doses of vardenafil produce an increase in QTc interval (e.g., 4 to 6 msec calculated by individual QT correction).
4.  Repaglinide: (Average) Careful monitoring of blood glucose is really useful when hydroxychloroquine and antidiabetic brokers, together with the meglitinides, are coadministered. Ventricular arrhythmias (i.e., ventricular fibrillation and ventricular tachycardia) and torsade de pointes have been reported in patients taking hydroxychloroquine.
5.  Osimertinib: (Main) Hydroxychloroquine prolongs the QT interval and shouldn't be administered with other drugs identified to extend the QT interval akin to osimertinib. Prolongation of the QTc interval and ventricular arrhythmias have been reported in patients treated with ivosidenib.
6.