Antalgic, drug addiction-stopping medication and its preparation method
A technology of medicament and injection, applied in the preparation of the medicament, in the field of detoxification and analgesic medicaments containing tetrodotoxin, which can solve the problems of large loss of toxin, influence on drug efficacy, strong adsorption, etc., achieve high yield and no drug production Dependency, low cost effect
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Embodiment 1
[0020] This example is an example of tetrodotoxin purification.
[0021] Separation, extraction and purification of tetrodotoxin according to the following methods and steps:
[0022] 1. Take puffer fish viscera and ovary 10kg, place in a 50-liter stainless steel automatic homogenizer to stir and homogenate, and the homogenate is centrifuged in a centrifuge at a speed of 2000 rpm, and the supernatant is taken;
[0023] 2. Place the supernatant obtained in step 1 in a distillation container, control the vacuum degree to not less than 0.1 Pa, carry out vacuum distillation, and distill until evaporated to dryness to obtain a solid;
[0024] 3. Dissolve 100 g of the solid matter obtained in step 2 in 500 mL of 30% (W%) acetic acid aqueous solution, then dilute with 95% ethanol until the alcohol degree reaches 75%, then filter, and collect the filtrate;
[0025] 4. Distill the filtrate in step 3 under reduced pressure in a distillation vessel, control the vacuum degree to be not l...
Embodiment 2
[0030] This example is an example of the medicament of the present invention.
[0031] Accurately weigh 1 mg of the pure tetrodotoxin in Example 1, dissolve it in 500 mL of 1% citric acid aqueous solution, add distilled water to dilute to 10000 mL, and mix well. At this time, the pH value of the drug was 6.0, and it contained 0.1 μg / mL of tetrodotoxin and 0.5 μg / mL of citric acid.
[0032] The above medicine is sterilized under cobalt irradiation for 10 minutes, and then bottled and sealed to prepare the injection.
Embodiment 3
[0034] This embodiment is another example of the medicament of the present invention.
[0035] Accurately weigh 1 mg of pure tetrodotoxin in Example 1, dissolve in 50 mL of 10% aqueous citric acid, and mix well. At this time, the pH value of the drug was 4.5, which contained 20 μg / mL of tetrodotoxin and 100 μg / mL of citric acid.
[0036] The above medicine is sterilized under cobalt irradiation for 10 minutes, and then bottled and sealed to prepare the injection.
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