Title: Until the Final Hour
Content:  before he attempted his suicide, he tested a capsule on his beloved dog Blondi. The capsule killed Blondi almost instantly. In the afternoon of 30 April, Hitler killed himself with a gunshot wound to the right temple, using his own Walther PPK semiautomatic pistol chambered for 7.65 mm/.32 ACP. Eva Braun, his bride of fewer than 40 hours, used cyanide by itself. Minister for Public Enlightenment and Propaganda Joseph Goebbels and his wife Magda poisoned their six children with cyanide (to Junge's horror) and their bodies were found, in their beds in the Vorbunker, by the Soviets a few days later. Goebbels and his wife either committed suicide or had the SS guards shoot them ("eyewitness" 
Title: Death of Adolf Hitler
Content:  Steiner's Army Detachment Steiner to counterattack had not been obeyed. Hitler launched a tirade against his commanders, calling them treacherous and incompetent, culminating in a declaration – for the first time – that the war was lost. Hitler announced that he would stay in Berlin until the end and then shoot himself. Later that day, he asked SS physician Werner Haase about the most reliable method of suicide. Haase suggested the "pistol-and-poison method" of combining a dose of cyanide with a gunshot to the head. Luftwaffe chief Reichsmarschall Hermann Göring learned about this and sent a telegram to Hitler asking for 
Title: Death of Adolf Hitler
Content:  the presence of hydrogen cyanide. Linge saw the bodies of Hitler and Braun sitting upright on the sofa, with Hitler to Braun's right. His head was canted to his right. Günsche entered the study shortly afterwards. He described Braun's corpse as being on Hitler's left, with her legs drawn up and slumped away from him. Günsche stated that Hitler "sat ... sunken over, with blood dripping out of his right temple. He had shot himself with his own pistol, a Walther PPK 7.65." The gun lay at his feet. Hitler's dripping blood had made a large stain on the right arm of the sofa 
Title: Heinz Linge
Content:  Hitler's secretary, Traudl Junge, narrates Hitler's very last minutes in the bunker. Linge explains that Hitler and his wife committed suicide in Hitler's private room in the bunker. He tells how he went into Hitler's private study after hearing a sudden bang and found that Hitler and Braun were dead. Hitler had shot himself in the right temple. Braun had taken what Linge concluded must have been cyanide poison. After the suicide of Hitler and Eva Braun, the two bodies were carried up the stairs to ground level and through the bunker's emergency exit to the garden behind the Reich Chancellery, where they were doused with petrol. After the first attempts 
Title: History of poison
Content:  Nazi war leader Hermann Göring used cyanide to kill himself the night before he was supposed to be hanged during the Nuremberg Trials. Adolf Hitler had also taken a pill of cyanide but he bit down on the capsule and shot himself in the right temple shortly before the fall of Berlin along with his wife, Eva Braun.
Title: Joseph Goebbels
Content:  their lives "side by side with the Führer". In the mid-afternoon of 30 April, Hitler shot himself. Goebbels was depressed, and said he would walk around the Chancellery garden until he was killed by the Russian shelling. Voss later recounted Goebbels as saying: "It is a great pity that such a man [Hitler] is not with us any longer. But there is nothing to be done. For us, everything is lost now and the only way out left for us is the one Hitler chose. I shall follow his example." On 1 May, Goebbels carried out his sole official act as Chancellor: he dictated 
Title: Mass suicides in 1945 Nazi Germany
Content:  Cyanide capsules were one of the most common ways that people killed themselves in the last days of the war. On 12 April 1945, members of the Hitler Youth distributed cyanide pills to audience members during the last concert of the Berlin Philharmonic. Prior to his own suicide in the Führerbunker, Hitler ensured all his staff had been given poison capsules. In March 1945, the British printed a German-language black propaganda postcard, supposedly issued by the Nazi government, giving detailed instructions on how to hang oneself with the minimum amount of pain. There are numerous documented cases where parents killed their children before they killed themselves. Members of the German armed forces often used weapons to end their lives. For example, SS-Obergruppenführer Ernst-Robert Grawitz killed himself and his family with a grenade, Wehrmacht generals Wilhelm Burgdorf and Hans Krebs shot themselves in the head with their pistols, and Josef Terboven, the Reichskommissar for Norway, blew himself up in a bunker by detonating 50 kg of dynamite.
Title: Adolf Hitler
Content:  representative at Hitler's HQ in Berlin) shot. After midnight on the night of 28–29 April, Hitler married Eva Braun in a small civil ceremony in the Führerbunker. Later that afternoon, Hitler was informed that Mussolini had been executed by the Italian resistance movement on the previous day; this presumably increased his determination to avoid capture. On 30 April 1945, Soviet troops were within a block or two of the Reich Chancellery when Hitler shot himself in the head and Braun bit into a cyanide capsule. Their corpses were carried outside to the garden behind the Reich Chancellery, where they were placed in a bomb crater, 
Title: The Death of Adolf Hitler
Content:  of a gun shot ... Hitler poisoned himself." Bezymenski quotes testimony given to the Soviets by SS general Johann Rattenhuber, in which he claimed that before killing himself with cyanide, Hitler ordered Linge to return in ten minutes to deliver a coup de grâce-style gunshot to ensure his death. Bezymenski calls it "certain" that if anyone shot Hitler, it was not himself. To support this theory, he cites the little black dog found nearby, which was killed in a similar fashion. The author also refers to a skull fragment recovered in 1946, which had a gunshot wound to the back of the head, saying it most likely belonged to Hitler.
Title: Walther Hewel
Content:  Until Hitler committed suicide on 30 April 1945, Hewel remained in his inner circle. As one of the few people to remain near him until the end, he was said to have tried to cheer Hitler up. He was among the last people to have a personal conversation with Hitler before he died, in which Hitler had encouraged Hewel to commit suicide. Hitler warned Hewel that if he was captured by the Red Army, he would be tortured and "mounted in a waxworks". Hitler gave Hewel a cyanide capsule and a Walther 7.65 handgun, then had him take an oath to kill himself rather than be captured by the Soviets. Following Hitler's suicide, Hewel escaped the Führerbunker in a group led by SS-Brigadeführer Wilhelm Mohnke. Mohnke planned to break out 

Question: what did hitler use to kill himself?
Answer: Gunshot.