Did he hid a syanide capsul in himself? Or how did he do it? I think the British would have searched him thoughly.

The doctor examined him minutely for any sign of
concealed poison -- the "SS Cough Drops." This was
the tiny vial of paper-thin glass, just under
half-an-inch long and a quarter-inch wide, filled
with deadly cyanide of potassium which all top
Nazis and SS men carried. At one end it had a
purple seal.

The doctor even looked in Himmler's mouth He
turned to the others. "Nothing!" he said ...

The British doctor had been watching Himmler. He
said later that he was not satisfied. The former SS
chief seemed too smug and self-assured, as though
he held some last trick.

"Come over to the light," he told Himmler. '"I
want to have another look at you. Open your
mouth."

He bent Himmler's head back and with his
forefinger, moved his tongue so he could see
better. He saw the purple seal of the poison vial,
no bigger than a man's little fingernail, tucked
away in a cunning niche between two back
molars.

The doctor made the mistake of uttering some
exclamation. Himmler knew his sure way out had been
discovered. The game was up. It was now or
never

He clamped his jaws hard on the doctor's finger.
The doctor gave a startled cry of pain and jumped
back. And Himmler took his last decision.

With a swift movement of his tongue, he
dislodged the poison vial and crushed it between
his teeth. He gave a gasp of agony as the searing
liquid burned away his life. Then, slowly, he
crumpled up and collapsed on the floor ...