Other than with extremely high doses of vitamin<unk> , neurologic dysfunction improves following cessation of vitamin<unk>  supplementation and usually, but not always, resolves within six months. In cases of acute high doses, for example in people receiving daily doses of 2 grams of vitamin<unk>  per kilogram of body weight, symptoms may be irreversible and may additionally cause pseudoathetosis. In the immediate 2–6 weeks following discontinuation of vitamin<unk> , patients may experience a symptom progression before gradual improvement begins. This is known as coasting and is encountered in other toxic neuropathies. A vitamin<unk>  substance dependency may exist in daily dosages of 200 mg or more, making a drug withdrawal effect possible when discontinued.
Megavitamin-B6 syndrome
Mercury poisoning
Zinc toxicity
Lead poisoning
Iron poisoning
Copper toxicity
Mercury Poisoning
Chromium toxicity