Active Ingredients A to Z

Every branded generic we stock, organised by active ingredient, so you can find the affordable alternative to any big-name original. The brand changes; the active ingredient does not.

Gabapentin Gabapentin treats epilepsy and nerve pain; combined with opioids or other sedating medicines it can cause life-threatening slowed or stopped breathing, and stopping it suddenly can trigger withdrawal or seizures. 1 medicine View Gabapentin Galantamine Galantamine is a cholinesterase inhibitor used for mild to moderate Alzheimer's disease dementia. It can slow the heart rate and cause fainting, and doses must be increased slowly, since raising them too fast brings on severe nausea and vomiting. 1 medicine View Galantamine Gemfibrozil Gemfibrozil is a fibrate that lowers triglycerides and raises HDL cholesterol. It must never be combined with certain statins, especially simvastatin, because the combination sharply raises the risk of severe muscle breakdown (rhabdomyolysis). 1 medicine View Gemfibrozil Glibenclamide Glibenclamide (glyburide) is a sulfonylurea that lowers blood glucose in type 2 diabetes by making the pancreas release more insulin. Its defining risk is hypoglycemia, which can be severe and prolonged, especially in older adults and people with kidney impairment. 2 medicines View Glibenclamide Glimepiride Glimepiride is a sulfonylurea that lowers blood sugar in type 2 diabetes by prompting the pancreas to release insulin, and its defining risk is hypoglycemia, so you should never skip or delay a meal after taking a dose. 1 medicine View Glimepiride Glipizide Glipizide is a sulfonylurea that lowers blood glucose in type 2 diabetes by making the pancreas release more insulin. Its defining risk is hypoglycemia, so you should never skip a meal after taking a dose. 3 medicines View Glipizide Griseofulvin Griseofulvin is an oral antifungal used for ringworm and other dermatophyte infections of the skin, hair and nails. It is teratogenic, so pregnancy must be avoided during treatment and for a set time after, and it reduces the effectiveness of hormonal contraceptives. 4 medicines View Griseofulvin