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盐酸土霉素水溶液的PH在2～3.5时性安定,于5°～25℃30日有效。滴剂存冰箱可供三周用。但注射剂应临用新制,溶解后即用,以免感染细菌。注射用盐酸土霉素(粉剂装)通常以注射用水或生理氯化钠注射液溶解后行深部肌肉注射。本剂水溶液pH在2～3.5间,呈强酸性,故需加入氯化镁作为缓冲剂(有络合作用)。但这样的注射液对肌肉的刺激性仍然很大,可以加入2%的盐酸普鲁卡因作止痛用。本剂在硷性溶液中会迅速被破坏,应注意。静脉滴
Hydrochloric oxytetracycline aqueous solution PH at 2 to 3.5 when the sex stability, at 5 ° ~ 25 ℃ effective on the 30th. Drop the refrigerator for three weeks. However, the injection should come with a new system, dissolved immediately after use, so as not to infect bacteria. Oxytetracycline hydrochloride injection (powder equipment) is usually injected with water or physiological sodium chloride injection deep intramuscular injection. The aqueous solution of pH 2 to 3.5, was strong acid, it is necessary to add magnesium chloride as a buffer (with complexation). However, this injection of muscle irritation is still great, you can add 2% procaine hydrochloride for painkiller use. The agent will quickly be destroyed in alkaline solution, should pay attention. Intravenous drops