Supplement Facts: Serving Size: 2 capsules Servings Per Container: 45 Amount Per Serving: Vitamin C: 80 mg (100% RI) Niacin (mg NE): 8 mg (50% RI) Vitamin E (mg -TE): 6 mg (50% RI) Pantothenic Acid: 3 mg (50% RI) Vitamin B6: 0.7 mg (50% RI) Riboflavin (Vitamin B2): 0.7 mg (50% RI) Thiamine (Vitamin B1): 0.55 mg (50% RI) Vitamin A (g RE): 400 g (50% RI) Folic Acid: 100 g (50% RI) Biotin: 25 g (50% RI) Vitamin D: 2.5 g (50% RI) Vitamin B12: 1.25 g (50% RI) Hydrolyzed Collagen Type I (SOLUGEL): 200 mg Green Tea Extract (55% EGCG): 100 mg CLA (Conjugated Linoleic Acid): 100 mg L-Carnitine: 100 mg Hyaluronic Acid: 10 mg Coenzyme Q10: 10 mg *RI - Reference Intake Ingredients: Hydrolyzed collagen type I (SOLUGEL), L-carnitine tartrate, calcium salt of conjugated linoleic acid (80% CLA), green tea extract (Camellia sinensis) (55% EGCG), sodium hyaluronate, coenzyme Q10, capsule shell (hydroxypropyl methylcellulose), vitamin C (L-ascorbic acid), maltodextrin, niacin (nicotinamide), vitamin E (DL-alpha-tocopheryl acetate), pantothenic acid (calcium D-pantothenate), vitamin B6 (pyridoxine hydrochloride), riboflavin, thiamine (thiamine mononitrate), vitamin A (retinyl acetate), folic acid (pteroylmonoglutamic acid), biotin (D-biotin), vitamin D (cholecalciferol), vitamin B12 (cyanocobalamin), anti-caking agent (magnesium salts of fatty acids)

Generally speaking, doctors recommend that gastric bypass surgery patients take a complete multivitamin, calcium with vitamin D, iron and vitamin C, vitamin D and vitamin B12
It depends on the person
PMID 33809596
Ye S, Hu YP, Zhou Q, Zhang H, Xia ZZ, Zhao SZ, Wang Z, Wang SY, Wang XY, Zhang YK, et al
Liquid ChromatographyHigh Resolution Mass Spectrometry for Peptide Drug Quality Control