Doctor insights on:
How Much Vitamin A Is Safe To Take
Vitamin A: Vitamin a supplements are usually safe. Excessive vitamin a theoretically can affect/hurt your liver. Patients with retinitis pigmentosa take mega-doses of vit a often without side effect. The best way to get your vitamins is through a natural, green leafy veggie diet. ...Read moreSee 1 more doctor answer
Vitamin A helps form and maintain healthy teeth, skeletal and soft tissue, mucous membranes, and skin. It is also known as retinol because it produces the pigments in the retina of the eye. Vitamin A promotes good vision, especially in low light. It may also be needed ...Read more
100 mg/day for adult: Chronic administration of 1–6 g oral pyridoxine (vitamin b6) per day for 12–40 months can cause severe and progressive sensory neuropathy characterized by ataxia (loss of control of bodily movements). Nevertheless, an upper limit of 100 mg/day for adults is considered safe. ...Read moreSee 1 more doctor answer
Not very. No.: Unless you have a know deficiency in all the vitamins in a multivitamin or have a very restricted diet, multivitamins are not necessary and can cause medical problems. If you have a specific known deficiency, then take that specific vitamin. Otherwise, save your money for more gym time, which would be better for your health. ...Read moreSee 3 more doctor answers
How long is it safe to take phenteine to lose weight? An is it safe to take while taking syntthroid?
Yes and no!: Fda approved, it can have side-effects: tachycardia, arrthymias, and an increase in blood pressure. The problem with phenetermine is that it usually will deliver a 10-15 lb weight loss and it's effects diminish and do not continue. It works by both suppresing appetite and increasing metabolism. If your thyroid dose is correct, shouldn't pose an issue. If high, serious problems could arise! diet! ...Read moreSee 1 more doctor answer
~3 mo, Maybe Never?: Work by what criteria? Over last few years, my experience with people who have chosen vit d3 rx (written by myself), have essentially always being given vit d2 50k iu pills by pharmacies (despite this substitution being illegal). A large minority of people do not convert d to d2 or d2 to d3 well. I have seen the quest lab d3 conc. Either not improve or even go down in people saying they took rx. ...Read more
Vitamin D: Depends on many factors e.g. Age, amount of skin exposed to sun rays daily, use of sun blockers, time of day that skin is exposed, race, location, and other factors. The best source of vitamin d is that which your body makes from exposure of the naked skin to the sun rays. If this is not optimal then vit. D supplementation is necessary. Keep the blood level above 40 but below 90 for safety. ...Read moreSee 3 more doctor answers
Hormone replacement: Its never a good idea to take a hormone as a supplement unless there is a deficiency. Even in some hormone deficiencies, the drawbacks to replacement outweigh the benefits. While there is some limited evidence that dhea replacement can help specific groups (people with addison's disease for example), adrenal supplements do not have proof that they work at all. ...Read more
Fish oil: It is an adjunctive treatment. Thus, don't expect to see any abrupt changes in condition if you are using it. However, it is beneficial. ...Read more
Melatonin: Since there is no established dose for melatonin, it is recommended to start low (0.3 mg) & work up to 5 mg, taken usually 30 - 60 minutes before bedtime. Potential side effects are nausea/vomiting, headache, irritability. If morning drowsiness occurs, reduce dose or take earlier before bedtime. Choose reliable manufacturer since ingredient quality may vary (not regulated by govt). ...Read moreSee 1 more doctor answer
Statins: At the present time we have no time limit to statin length of therapy. Some recent studies suggest there may be glucose intolerance associated with long term statin use but we don't know if this is significant. As long as no serious side effects in the individual patient, it appears they are long term safe. If significant side effects, we stop the agent. ...Read moreSee 1 more doctor answer
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