Otherwise, it is preferable that the kezayis for the Mitzvah d Oraisa of Matzo should be eaten within two minutes, or at least four minutes. 2. 5-6 minutes is acceptable by some Rabbinical authorities. Relax, chew well and then begin swallowing. The time limit starts from when you begin swallowing. If one encounters difficulty, a small amount of water may be sipped while chewing.
Red wine is preferable.
If one cannot drink wine he may use grape juice. The cup used must contain at least a revi is. One may drink a glass of water immediately after swallowing the wine. Preferably, one should drink the entire cup. If this is very difficult, then drinking most of the cup is sufficient.