Most studies show that glucosamine does not cause any more side effects than a placebo (a "sugar pill" with no active ingredients). However, there are a few side effects that may be attributed to glucosamine, such as:
(Click Glucosamine Side Effects to learn more, including potentially serious side effects you should report immediately to your healthcare provider.)
Glucosamine hydrochloride is probably safe for many people when used appropriately. However, some people may be more likely to experience problems than others. Therefore, you should talk with your healthcare provider before taking glucosamine hydrochloride if you have:
- High cholesterol
- High blood pressure (hypertension)
- Any allergies, including allergies to foods, dyes, or preservatives.
Also, let your healthcare provider know if you are:
- Pregnant or thinking of becoming pregnant (see Glucosamine and Pregnancy)
- Breastfeeding (see Glucosamine and Breastfeeding).
Make sure to tell your healthcare provider about all other medicines you are taking, including prescription and non-prescription medicines, vitamins, and herbal supplements.
(Click Glucosamine Safety for more information, including any available warnings and precautions.)